From 49b36f735f073c973e57e187a10b709e6eff6bf1 Mon Sep 17 00:00:00 2001 From: David Payr <1696106+Vanilagy@users.noreply.github.com> Date: Sun, 29 Dec 2024 12:58:24 +0100 Subject: [PATCH] Bubble encoder errors to consumer --- dist/metamuxer.d.ts | 2 ++ dist/metamuxer.js | 21 +++++++++++---------- dist/metamuxer.min.js | 10 +++++----- dist/metamuxer.min.mjs | 10 +++++----- dist/metamuxer.mjs | 21 +++++++++++---------- src/media-source.ts | 13 ++++++++++--- src/subtitles.ts | 9 ++------- 7 files changed, 46 insertions(+), 40 deletions(-) diff --git a/dist/metamuxer.d.ts b/dist/metamuxer.d.ts index d5ddb93..76c81da 100644 --- a/dist/metamuxer.d.ts +++ b/dist/metamuxer.d.ts @@ -33,6 +33,7 @@ export declare type AudioCodec = typeof AUDIO_CODECS[number]; export declare type AudioCodecConfig = { codec: AudioCodec; bitrate: number; + onEncodingError?: (error: Error) => void; }; /** @public */ @@ -343,6 +344,7 @@ export declare type VideoCodecConfig = { codec: VideoCodec; bitrate: number; latencyMode?: VideoEncoderConfig['latencyMode']; + onEncodingError?: (error: Error) => void; }; /** @public */ diff --git a/dist/metamuxer.js b/dist/metamuxer.js index b20f093..4c2074a 100644 --- a/dist/metamuxer.js +++ b/dist/metamuxer.js @@ -282,16 +282,12 @@ var Metamuxer = (() => { let match; if (!this.preambleText) { if (!preambleStartRegex.test(text)) { - const error = new Error("WebVTT preamble incorrect."); - this.options.error(error); - throw error; + throw new Error("WebVTT preamble incorrect."); } match = cueBlockHeaderRegex.exec(text); const preamble = text.slice(0, match?.index ?? text.length).trimEnd(); if (!preamble) { - const error = new Error("No WebVTT preamble provided."); - this.options.error(error); - throw error; + throw new Error("No WebVTT preamble provided."); } this.preambleText = preamble; if (match) { @@ -3592,6 +3588,9 @@ ${cue.notes ?? ""}`; if (config.latencyMode !== void 0 && !["quality", "realtime"].includes(config.latencyMode)) { throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'."); } + if (config.onEncodingError !== void 0 && typeof config.onEncodingError !== "function") { + throw new TypeError("config.onEncodingError, when provided, must be a function."); + } }; var VideoEncoderWrapper = class { constructor(source, codecConfig) { @@ -3634,7 +3633,7 @@ ${cue.notes ?? ""}`; } this.encoder = new VideoEncoder({ output: (chunk, meta) => void this.muxer.addEncodedVideoChunk(this.source._connectedTrack, chunk, meta), - error: (error) => console.error("Video encode error:", error) + error: this.codecConfig.onEncodingError ?? ((error) => console.error("VideoEncoder error:", error)) }); this.encoder.configure({ codec: buildVideoCodecString( @@ -3782,6 +3781,9 @@ ${cue.notes ?? ""}`; if (!Number.isInteger(config.bitrate) || config.bitrate <= 0) { throw new TypeError("config.bitrate must be a positive integer."); } + if (config.onEncodingError !== void 0 && typeof config.onEncodingError !== "function") { + throw new TypeError("config.onEncodingError, when provided, must be a function."); + } }; var AudioEncoderWrapper = class { constructor(source, codecConfig) { @@ -3819,7 +3821,7 @@ ${cue.notes ?? ""}`; } this.encoder = new AudioEncoder({ output: (chunk, meta) => void this.muxer.addEncodedAudioChunk(this.source._connectedTrack, chunk, meta), - error: (error) => console.error("Audio encode error:", error) + error: this.codecConfig.onEncodingError ?? ((error) => console.error("AudioEncoder error:", error)) }); this.encoder.configure({ codec: buildAudioCodecString(this.codecConfig.codec, audioData.numberOfChannels, audioData.sampleRate), @@ -3946,8 +3948,7 @@ ${cue.notes ?? ""}`; super(codec); this._parser = new SubtitleParser({ codec, - output: (cue, metadata) => this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack, cue, metadata), - error: (error) => console.error("Subtitle parse error:", error) + output: (cue, metadata) => this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack, cue, metadata) }); } digest(text) { diff --git a/dist/metamuxer.min.js b/dist/metamuxer.min.js index e04cbe1..16f4b06 100644 --- a/dist/metamuxer.min.js +++ b/dist/metamuxer.min.js @@ -1,10 +1,10 @@ -"use strict";var Metamuxer=(()=>{var Ct=Object.defineProperty;var vr=Object.getOwnPropertyDescriptor;var _r=Object.getOwnPropertyNames;var Ar=Object.prototype.hasOwnProperty;var Ir=(i,t)=>{for(var e in t)Ct(i,e,{get:t[e],enumerable:!0})},Er=(i,t,e,r)=>{if(t&&typeof t=="object"||typeof t=="function")for(let s of _r(t))!Ar.call(i,s)&&s!==e&&Ct(i,s,{get:()=>t[s],enumerable:!(r=vr(t,s))||r.enumerable});return i};var 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addEncodedAudioChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type,u=this.validateAndNormalizeTimestamp(s.track,r.timestamp,c==="key"),d=this.createSampleForTrack(s,o,u,(r.duration??0)/1e6,c);await this.registerSample(s,d)}finally{n()}}async addSubtitleCue(e,r,a){let n=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,a);this.validateAndNormalizeTimestamp(s.track,1e6*r.timestamp,!0),e.source._codec==="webvtt"&&(s.cueQueue.push(r),await this.processWebVTTCues(s,r.timestamp))}finally{n()}}async processWebVTTCues(e,r){for(;e.cueQueue.length>0;){let a=new Set([]);for(let d of e.cueQueue)l(d.timestamp<=r),l(e.lastCueEndTimestamp<=d.timestamp+d.duration),a.add(Math.max(d.timestamp,e.lastCueEndTimestamp)),a.add(d.timestamp+d.duration);let n=[...a].sort((d,f)=>d-f),s=n[0],o=n[1]??s;if(r=o)break;le.lastIndex=0;let m=le.test(f.text),g=f.timestamp+f.duration,b=e.cueToSourceId.get(f);if(b===void 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e.currentChunk.samples)l(r.data),this.writer.write(r.data),r.data=null;await this.writer.flush()}}async interleaveSamples(){l(this.fastStart==="fragmented");for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return;e:for(;;){let e=null,r=1/0;for(let n of this.trackDatas){if(n.sampleQueue.length===0&&!n.track.source._closed)break e;n.sampleQueue.length>0&&n.sampleQueue[0].timestampu.currentChunk),n=this.writer.getPos(),s=Et(r,a);this.boxWriter.writeBox(s);{let u=Qe(!1),d=0;for(let m of a)for(let g of m.currentChunk.samples)d+=g.size;let f=this.boxWriter.measureBox(u)+d;f>=2**32&&(u.largeSize=!0,f=this.boxWriter.measureBox(u)+d),u.size=f,this.boxWriter.writeBox(u)}for(let u of a){u.currentChunk.offset=this.writer.getPos(),u.currentChunk.moofOffset=n;for(let d of u.currentChunk.samples)this.writer.write(d.data),d.data=null}let o=this.writer.getPos();this.writer.seek(this.boxWriter.offsets.get(s));let c=Et(r,a);this.boxWriter.writeBox(c),this.writer.seek(o);for(let u of a)u.finalizedChunks.push(u.currentChunk),this.finalizedChunks.push(u.currentChunk),u.currentChunk=null;e&&await this.writer.flush()}async onTrackClose(e){let r=await this.mutex.acquire();if(e.type==="subtitle"&&e.source._codec==="webvtt"){let a=this.trackDatas.find(n=>n.track===e);a&&await this.processWebVTTCues(a,1/0)}this.fastStart==="fragmented"&&await this.interleaveSamples(),r()}async finalize(){let e=await this.mutex.acquire();for(let r of this.trackDatas)r.type==="subtitle"&&r.track.source._codec==="webvtt"&&await this.processWebVTTCues(r,1/0);if(this.fastStart==="fragmented"){for(let r of this.trackDatas){for(let a of r.sampleQueue)await this.addSampleToTrack(r,a);this.processTimestamps(r)}await this.finalizeFragment(!1)}else for(let r of this.trackDatas)this.processTimestamps(r),await this.finalizeCurrentChunk(r);if(this.fastStart==="in-memory"){l(this.mdat);let r;for(let n=0;n<2;n++){let s=we(this.trackDatas,this.creationTime),o=this.boxWriter.measureBox(s);r=this.boxWriter.measureBox(this.mdat);let c=this.writer.getPos()+o+r;for(let u of this.finalizedChunks){u.offset=c;for(let{data:d}of u.samples)l(d),c+=d.byteLength,r+=d.byteLength}if(c<2**32)break;r>=2**32&&(this.mdat.largeSize=!0)}let a=we(this.trackDatas,this.creationTime);this.boxWriter.writeBox(a),this.mdat.size=r,this.boxWriter.writeBox(this.mdat);for(let n of this.finalizedChunks)for(let s of n.samples)l(s.data),this.writer.write(s.data),s.data=null}else if(this.fastStart==="fragmented"){let r=this.writer.getPos(),a=er(this.trackDatas);this.boxWriter.writeBox(a);let n=this.writer.getPos()-r;this.writer.seek(this.writer.getPos()-4),this.boxWriter.writeU32(n)}else{l(this.mdat),l(this.ftypSize!==null);let r=this.boxWriter.offsets.get(this.mdat);l(r!==void 0);let a=this.writer.getPos()-r;this.mdat.size=a,this.mdat.largeSize=a>=2**32,this.boxWriter.patchBox(this.mdat);let n=we(this.trackDatas,this.creationTime);if(typeof this.fastStart=="object"){this.writer.seek(this.ftypSize),this.boxWriter.writeBox(n);let s=r-this.writer.getPos();this.boxWriter.writeBox(Zt(s))}else this.boxWriter.writeBox(n)}e()}};var ve=class{constructor(t){this.value=t}},pe=class{constructor(t){this.value=t}},_e=class{constructor(t){this.value=t}};var Ot=i=>i<256?1:i<65536?2:i<1<<24?3:i<2**32?4:i<2**40?5:6,Ft=i=>i>=-64&&i<64?1:i>=-8192&&i<8192?2:i>=-(1<<20)&&i<1<<20?3:i>=-(1<<27)&&i<1<<27?4:i>=-(2**34)&&i<2**34?5:6,hr=i=>{if(i<127)return 1;if(i<16383)return 2;if(i<(1<<21)-1)return 3;if(i<(1<<28)-1)return 4;if(i<2**35-1)return 5;if(i<2**42-1)return 6;throw new Error("EBML VINT size not supported "+i)};var Vt=2**15,pr="https://github.com/Vanilagy/webm-muxer",br=6,kr=5,Fi={avc:"V_MPEG4/ISO/AVC",hevc:"V_MPEGH/ISO/HEVC",vp8:"V_VP8",vp9:"V_VP9",av1:"V_AV1",aac:"A_AAC",opus:"A_OPUS",webvtt:"S_TEXT/WEBVTT"},Vi={video:1,audio:2,subtitle:17},Ze=class extends me{constructor(e,r){super(e);this.timestampsMustStartAtZero=!1;this.helper=new Uint8Array(8);this.helperView=new DataView(this.helper.buffer);this.offsets=new WeakMap;this.dataOffsets=new WeakMap;this.trackDatas=[];this.segment=null;this.segmentInfo=null;this.seekHead=null;this.tracksElement=null;this.segmentDuration=null;this.cues=null;this.currentCluster=null;this.currentClusterMsTimestamp=null;this.trackDatasInCurrentCluster=new Set;this.duration=0;this.writer=e._writer,this.format=r,this.format._options.streamable&&(this.writer.ensureMonotonicity=!0)}writeByte(e){this.helperView.setUint8(0,e),this.writer.write(this.helper.subarray(0,1))}writeFloat32(e){this.helperView.setFloat32(0,e,!1),this.writer.write(this.helper.subarray(0,4))}writeFloat64(e){this.helperView.setFloat64(0,e,!1),this.writer.write(this.helper)}writeUnsignedInt(e,r=Ot(e)){let a=0;switch(r){case 6:this.helperView.setUint8(a++,e/2**40|0);case 5:this.helperView.setUint8(a++,e/2**32|0);case 4:this.helperView.setUint8(a++,e>>24);case 3:this.helperView.setUint8(a++,e>>16);case 2:this.helperView.setUint8(a++,e>>8);case 1:this.helperView.setUint8(a++,e);break;default:throw new Error("Bad UINT size "+r)}this.writer.write(this.helper.subarray(0,a))}writeSignedInt(e,r=Ft(e)){e<0&&(e+=2**(r*8)),this.writeUnsignedInt(e,r)}writeEBMLVarInt(e,r=hr(e)){let a=0;switch(r){case 1:this.helperView.setUint8(a++,128|e);break;case 2:this.helperView.setUint8(a++,64|e>>8),this.helperView.setUint8(a++,e);break;case 3:this.helperView.setUint8(a++,32|e>>16),this.helperView.setUint8(a++,e>>8),this.helperView.setUint8(a++,e);break;case 4:this.helperView.setUint8(a++,16|e>>24),this.helperView.setUint8(a++,e>>16),this.helperView.setUint8(a++,e>>8),this.helperView.setUint8(a++,e);break;case 5:this.helperView.setUint8(a++,8|e/2**32&7),this.helperView.setUint8(a++,e>>24),this.helperView.setUint8(a++,e>>16),this.helperView.setUint8(a++,e>>8),this.helperView.setUint8(a++,e);break;case 6:this.helperView.setUint8(a++,4|e/2**40&3),this.helperView.setUint8(a++,e/2**32|0),this.helperView.setUint8(a++,e>>24),this.helperView.setUint8(a++,e>>16),this.helperView.setUint8(a++,e>>8),this.helperView.setUint8(a++,e);break;default:throw new Error("Bad EBML VINT size "+r)}this.writer.write(this.helper.subarray(0,a))}writeString(e){this.writer.write(new Uint8Array(e.split("").map(r=>r.charCodeAt(0))))}writeEBML(e){if(e!==null){if(e instanceof Uint8Array)this.writer.write(e);else if(Array.isArray(e))for(let r of e)this.writeEBML(r);else if(this.offsets.set(e,this.writer.getPos()),this.writeUnsignedInt(e.id),Array.isArray(e.data)){let r=this.writer.getPos(),a=e.size===-1?1:e.size??4;e.size===-1?this.writeByte(255):this.writer.seek(this.writer.getPos()+a);let n=this.writer.getPos();if(this.dataOffsets.set(e,n),this.writeEBML(e.data),e.size!==-1){let s=this.writer.getPos()-n,o=this.writer.getPos();this.writer.seek(r),this.writeEBMLVarInt(s,a),this.writer.seek(o)}}else if(typeof e.data=="number"){let r=e.size??Ot(e.data);this.writeEBMLVarInt(r),this.writeUnsignedInt(e.data,r)}else if(typeof e.data=="string")this.writeEBMLVarInt(e.data.length),this.writeString(e.data);else if(e.data instanceof Uint8Array)this.writeEBMLVarInt(e.data.byteLength,e.size),this.writer.write(e.data);else if(e.data instanceof ve)this.writeEBMLVarInt(4),this.writeFloat32(e.data.value);else if(e.data instanceof pe)this.writeEBMLVarInt(8),this.writeFloat64(e.data.value);else if(e.data instanceof _e){let r=e.size??Ft(e.data.value);this.writeEBMLVarInt(r),this.writeSignedInt(e.data.value,r)}}}beforeTrackAdd(e){if(this.format instanceof oe)if(e.type==="video"){if(!["vp8","vp9","av1"].includes(e.source._codec))throw new Error("WebM only supports VP8, VP9 and AV1 as video codecs. Switching to MKV removes this restriction.")}else if(e.type==="audio"){if(!["opus","vorbis"].includes(e.source._codec))throw new Error("WebM only supports Opus and Vorbis as audio codecs. Switching to MKV removes this restriction.")}else if(e.type==="subtitle"){if(e.source._codec!=="webvtt")throw new Error("WebM only supports WebVTT as subtitle codec. Switching to MKV removes this restriction.")}else throw new Error("WebM only supports video, audio and subtitle tracks. Switching to MKV removes this restriction.")}async start(){let e=await this.mutex.acquire();this.writeEBMLHeader(),this.format._options.streamable||this.createSeekHead(),this.createSegmentInfo(),this.createCues(),await this.writer.flush(),e()}writeEBMLHeader(){let e={id:440786851,data:[{id:17030,data:1},{id:17143,data:1},{id:17138,data:4},{id:17139,data:8},{id:17026,data:this.format instanceof oe?"webm":"matroska"},{id:17031,data:2},{id:17029,data:2}]};this.writeEBML(e)}createSeekHead(){let e=new Uint8Array([28,83,187,107]),r=new Uint8Array([21,73,169,102]),a=new Uint8Array([22,84,174,107]),n={id:290298740,data:[{id:19899,data:[{id:21419,data:e},{id:21420,size:5,data:0}]},{id:19899,data:[{id:21419,data:r},{id:21420,size:5,data:0}]},{id:19899,data:[{id:21419,data:a},{id:21420,size:5,data:0}]}]};this.seekHead=n}createSegmentInfo(){let e={id:17545,data:new pe(0)};this.segmentDuration=e;let r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:pr},{id:22337,data:pr},this.format._options.streamable?null:e]};this.segmentInfo=r}createTracks(){let e={id:374648427,data:[]};this.tracksElement=e;for(let r of this.trackDatas)e.data.push({id:174,data:[{id:215,data:r.track.id},{id:29637,data:r.track.id},{id:131,data:Vi[r.type]},{id:134,data:Fi[r.track.source._codec]},r.type==="video"?this.videoSpecificTrackInfo(r):null,r.type==="audio"?this.audioSpecificTrackInfo(r):null,r.type==="subtitle"?this.subtitleSpecificTrackInfo(r):null]})}videoSpecificTrackInfo(e){let r=[e.info.decoderConfig.description?{id:25506,data:ee(e.info.decoderConfig.description)}:null,e.track.metadata.frameRate?{id:2352003,data:1e9/e.track.metadata.frameRate}:null],a=e.info.decoderConfig.colorSpace,n={id:224,data:[{id:176,data:e.info.width},{id:186,data:e.info.height},Be(a)?{id:21936,data:[{id:21937,data:ie[a.matrix]},{id:21946,data:re[a.transfer]},{id:21947,data:te[a.primaries]},{id:21945,data:a.fullRange?2:1}]}:null]};return r.push(n),r}audioSpecificTrackInfo(e){return[e.info.decoderConfig.description?{id:25506,data:ee(e.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new ve(e.info.sampleRate)},{id:159,data:e.info.numberOfChannels}]}]}subtitleSpecificTrackInfo(e){return[{id:25506,data:P.encode(e.info.config.description)}]}createSegment(){let e={id:408125543,size:this.format._options.streamable?-1:br,data:[this.format._options.streamable?null:this.seekHead,this.segmentInfo,this.tracksElement]};this.segment=e,this.writeEBML(e)}createCues(){this.cues={id:475249515,data:[]}}get segmentDataOffset(){return l(this.segment),this.dataOffsets.get(this.segment)}getVideoTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;qe(r),l(r),l(r.decoderConfig),l(r.decoderConfig.codedWidth!==void 0),l(r.decoderConfig.codedHeight!==void 0);let n={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getAudioTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Xe(r),l(r),l(r.decoderConfig);let n={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getSubtitleTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Ge(r),l(r),l(r.config);let n={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}async addEncodedVideoChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type==="key",u=this.validateAndNormalizeTimestamp(s.track,r.timestamp,c),d=this.createInternalChunk(o,u,(r.duration??0)/1e6,r.type);e.source._codec==="vp9"&&this.fixVP9ColorSpace(s,d),s.chunkQueue.push(d),await this.interleaveChunks()}finally{n()}}async addEncodedAudioChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type,u=c==="key",d=this.validateAndNormalizeTimestamp(s.track,r.timestamp,u),f=this.createInternalChunk(o,d,(r.duration??0)/1e6,c);s.chunkQueue.push(f),await this.interleaveChunks()}finally{n()}}async addSubtitleCue(e,r,a){let n=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,a),o=this.validateAndNormalizeTimestamp(s.track,1e6*r.timestamp,!0),c=r.text,u=Math.floor(o*1e3);le.lastIndex=0,c=c.replace(le,g=>{let p=We(g.slice(1,-1))-u;return`<${He(p)}>`});let d=P.encode(c),f=`${r.settings??""} ${r.identifier??""} -${r.notes??""}`,m=this.createInternalChunk(d,o,r.duration,"key",f.trim()?P.encode(f):null);a.chunkQueue.push(m),await this.interleaveChunks()}finally{n()}}async interleaveChunks(){for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return;e:for(;;){let e=null,r=1/0;for(let n of this.trackDatas){if(n.chunkQueue.length===0&&!n.track.source._closed)break e;n.chunkQueue.length>0&&n.chunkQueue[0].timestamp=2&&s++;let u={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];zt(r.data,s+0,s+3,u)}createInternalChunk(e,r,s,n,a=null){return{data:e,type:n,timestamp:r,duration:s,additions:a}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),n=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let m=f.chunkQueue[0];return m&&m.type==="key"});(!this.currentCluster||n&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let a=s-this.currentClusterMsTimestamp;if(a<0)return;if(a>=Vt)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${Vt} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${Vt} milliseconds.`);let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,a,!1);let d=Math.floor(1e3*r.duration);if(d===0&&!r.additions){u.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[c,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new _e(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,d>0?{id:155,data:d}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+d),e.lastWrittenMsTimestamp=s,this.trackDatasInCurrentCluster.add(e)}createNewCluster(e){this.currentCluster&&!this.format._options.streamable&&this.finalizeCurrentCluster(),this.currentCluster={id:524531317,size:this.format._options.streamable?-1:kr,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){l(this.currentCluster);let e=this.writer.getPos()-this.dataOffsets.get(this.currentCluster),r=this.writer.getPos();this.writer.seek(this.offsets.get(this.currentCluster)+4),this.writeEBMLVarInt(e,kr),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;l(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(n=>({id:183,data:[{id:247,data:n.track.id},{id:241,data:s}]}))]})}async onTrackClose(){let e=await this.mutex.acquire();await this.interleaveChunks(),e()}async finalize(){let e=await this.mutex.acquire();this.segment||(this.createTracks(),this.createSegment());for(let r of this.trackDatas)for(;r.chunkQueue.length>0;)this.writeBlock(r,r.chunkQueue.shift());if(!this.format._options.streamable&&this.currentCluster&&this.finalizeCurrentCluster(),l(this.cues),this.writeEBML(this.cues),!this.format._options.streamable){let r=this.writer.getPos(),s=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.offsets.get(this.segment)+4),this.writeEBMLVarInt(s,br),this.segmentDuration.data=new pe(this.duration),this.writer.seek(this.offsets.get(this.segmentDuration)),this.writeEBML(this.segmentDuration),this.seekHead.data[0].data[1].data=this.offsets.get(this.cues)-this.segmentDataOffset,this.seekHead.data[1].data[1].data=this.offsets.get(this.segmentInfo)-this.segmentDataOffset,this.seekHead.data[2].data[1].data=this.offsets.get(this.tracksElement)-this.segmentDataOffset,this.writer.seek(this.offsets.get(this.seekHead)),this.writeEBML(this.seekHead),this.writer.seek(r)}e()}};var Y=class{},Je=class extends Y{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(t.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=t}_createMuxer(t){return new Ye(t,this)}},Ae=class extends Y{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.streamable!==void 0&&typeof t.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=t}_createMuxer(t){return new Ze(t,this)}},oe=class extends Ae{};var ce=class{constructor(){this._connectedTrack=null;this._closed=!1;this._offsetTimestamps=!1}_ensureValidDigest(){if(!this._connectedTrack)throw new Error("Cannot call digest without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call digest before output has been started.");if(this._connectedTrack.output._finalizing)throw new Error("Cannot call digest after output has started finalizing.");if(this._closed)throw new Error("Cannot call digest after source has been closed.")}_start(){}async _flush(){}close(){if(this._closed)throw new Error("Source already closed.");if(!this._connectedTrack)throw new Error("Cannot call close without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call close before output has been started.");this._closed=!0,!this._connectedTrack.output._finalizing&&this._connectedTrack.output._muxer.onTrackClose(this._connectedTrack)}},L=class extends ce{constructor(e){super();this._connectedTrack=null;if(!se.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${se.join(", ")}.`);this._codec=e}},et=class extends L{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,t,e)}},Mi=5,Di=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!se.includes(i.codec))throw new TypeError(`Invalid video codec '${i.codec}'. Must be one of: ${se.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.latencyMode!==void 0&&!["quality","realtime"].includes(i.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},Ie=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;Di(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(t.codedWidth!==this.lastWidth||t.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${t.codedWidth}x${t.codedHeight}.`)}else this.lastWidth=t.codedWidth,this.lastHeight=t.codedHeight;this.ensureEncoder(t),l(this.encoder);let e=Math.floor(t.timestamp/1e6/Mi);this.encoder.encode(t,{keyFrame:e!==this.lastMultipleOfKeyFrameInterval}),this.lastMultipleOfKeyFrameInterval=e,this.encoder.encodeQueueSize>=4&&await new Promise(r=>this.encoder.addEventListener("dequeue",r,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>void this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:cr(this.codecConfig.codec,t.codedWidth,t.codedHeight,this.codecConfig.bitrate),width:t.codedWidth,height:t.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...mr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},tt=class extends L{constructor(t){super(t.codec),this._encoder=new Ie(this,t)}digest(t){if(!(t instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},rt=class extends L{constructor(t,e){if(!(t instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new Ie(this,e),this._canvas=t}digest(t,e=0){if(!Number.isFinite(t)||t<0)throw new TypeError("timestamp must be a non-negative number.");if(!Number.isFinite(e)||e<0)throw new TypeError("duration must be a non-negative number.");let r=new VideoFrame(this._canvas,{timestamp:Math.round(1e6*t),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},it=class extends L{constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._offsetTimestamps=!0;this._encoder=new Ie(this,r),this._track=e}_start(){this._abortController=new AbortController;let e=new MediaStreamTrackProcessor({track:this._track}),r=new WritableStream({write:s=>{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},Q=class extends ce{constructor(e){super();this._connectedTrack=null;if(!ae.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${ae.join(", ")}.`);this._codec=e}},nt=class extends Q{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,t,e)}},Pi=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!ae.includes(i.codec))throw new TypeError(`Invalid audio codec '${i.codec}'. Must be one of: ${ae.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},Ee=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;Pi(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(t.numberOfChannels!==this.lastNumberOfChannels||t.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${t.numberOfChannels} channels at ${t.sampleRate} Hz.`)}else this.lastNumberOfChannels=t.numberOfChannels,this.lastSampleRate=t.sampleRate;this.ensureEncoder(t),l(this.encoder),this.encoder.encode(t),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>void this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:dr(this.codecConfig.codec,t.numberOfChannels,t.sampleRate),numberOfChannels:t.numberOfChannels,sampleRate:t.sampleRate,bitrate:this.codecConfig.bitrate,...fr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},st=class extends Q{constructor(t){super(t.codec),this._encoder=new Ee(this,t)}digest(t){if(!(t instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},at=class extends Q{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new Ee(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,n=e.length,a=new Float32Array(r*n);for(let u=0;u{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},ue=class extends ce{constructor(e){super();this._connectedTrack=null;if(!Se.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Se.join(", ")}.`);this._codec=e}},ct=class extends ue{constructor(t){super(t),this._parser=new Ne({codec:t,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(t){if(typeof t!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(t),this._connectedTrack.output._muxer.mutex.currentPromise}};var ut=class{constructor(t){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new q;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.format instanceof Y))throw new TypeError("options.format must be an OutputFormat.");if(!(t.target instanceof G))throw new TypeError("options.target must be a Target.");if(t.target._output)throw new Error("Target is already used for another output.");t.target._output=this,this._writer=t.target._createWriter(),this._muxer=t.format._createMuxer(this)}addVideoTrack(t,e={}){if(!(t instanceof L))throw new TypeError("source must be a VideoSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");if(typeof e.rotation=="number"&&![0,90,180,270].includes(e.rotation))throw new TypeError(`Invalid video rotation: ${e.rotation}. Has to be 0, 90, 180 or 270.`);if(Array.isArray(e.rotation)&&(e.rotation.length!==9||e.rotation.some(r=>!Number.isFinite(r))))throw new TypeError(`Invalid video transformation matrix: ${e.rotation.join()}`);if(e.frameRate!==void 0&&(!Number.isInteger(e.frameRate)||e.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",t,e)}addAudioTrack(t,e={}){if(!(t instanceof Q))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",t,e)}addSubtitleTrack(t,e={}){if(!(t instanceof ue))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",t,e)}_addTrack(t,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let s={id:this._tracks.length+1,output:this,type:t,source:e,metadata:r};this._muxer.beforeTrackAdd(s),this._tracks.push(s),e._connectedTrack=s}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let t=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();t()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),t()}};var j=class{constructor(){this._sizePromise=null}_getSize(){return this._sizePromise??=this._retrieveSize()}},dt=class extends j{constructor(t){if(!(t instanceof ArrayBuffer)&&!(t instanceof Uint8Array))throw new TypeError("buffer must be an ArrayBuffer or Uint8Array.");super(),this._bytes=t instanceof Uint8Array?t:new Uint8Array(t)}async _read(t,e){return this._bytes.subarray(t,e)}async _retrieveSize(){return this._bytes.byteLength}},lt=class extends j{constructor(t){if(!(t instanceof Blob))throw new TypeError("blob must be a Blob.");super(),this._blob=t}async _read(t,e){let s=await this._blob.slice(t,e).arrayBuffer();return new Uint8Array(s)}async _retrieveSize(){return this._blob.size}},mt=class extends j{constructor(e,r={}){if(typeof e!="string")throw new TypeError("url must be a string.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.withCredentials!==void 0&&typeof r.withCredentials!="boolean")throw new TypeError("options.withCredentials, when specified, must be a boolean.");super();this._fullData=null;this._url=e,this._withCredentials=r.withCredentials??!1}_makeRequest(e){return new Promise((r,s)=>{let n=new XMLHttpRequest;n.open("GET",this._url,!0),n.responseType="arraybuffer",n.withCredentials=this._withCredentials,e&&n.setRequestHeader("Range",`bytes=${e.start}-${e.end-1}`),n.onload=()=>{if(n.status>=200&&n.status<300){let a=n.response;e||(this._fullData=a),r({response:a,statusCode:n.status})}else s(new Error(`Error fetching ${this._url}: ${n.status} ${n.statusText}`))},n.onerror=()=>{s(new Error("Network error occurred."))},n.ontimeout=()=>{s(new Error("Request timed out."))},n.send()})}async _read(e,r){if(this._fullData)return new Uint8Array(this._fullData,e,r-e);let{response:s,statusCode:n}=await this._makeRequest({start:e,end:r});return n===200?new Uint8Array(s).subarray(e,r):new Uint8Array(s)}async _retrieveSize(){if(this._fullData)return this._fullData.byteLength;let e=new XMLHttpRequest;e.open("HEAD",this._url,!0),e.withCredentials=this._withCredentials,await new Promise((s,n)=>{e.onload=()=>{e.status>=200&&e.status<300?s():n(new Error(`Error fetching ${this._url} (HEAD): ${e.status} ${e.statusText}`))},e.onerror=()=>{s()},e.send()});let r=e.getResponseHeader("Content-Length");if(!r){let{response:s}=await this._makeRequest();return s.byteLength}return parseInt(r,10)}};var ft=class{constructor(t){this.input=t}};var be=class{constructor(t){this._backing=t}isVideoTrack(){return this instanceof U}isAudioTrack(){return this instanceof B}computeDuration(){return this._backing.computeDuration()}},U=class extends be{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getCodedWidth(){return this._backing.getCodedWidth()}getCodedHeight(){return this._backing.getCodedHeight()}getRotation(){return this._backing.getRotation()}async getDisplayWidth(){return await this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}async getDisplayHeight(){return await this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}},B=class extends be{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getNumberOfChannels(){return this._backing.getNumberOfChannels()}getSampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}};var ke=class{constructor(t,e=1/0){this.source=t;this.maxStorableBytes=e;this.loadedSegments=[];this.loadingSegments=[];this.sourceSizePromise=null;this.nextAge=0;this.totalStoredBytes=0}async loadRange(t,e){e=Math.min(e,await this.source._getSize());let r=this.loadingSegments.find(c=>c.start<=t&&c.end>=e);if(r){await r.promise;return}if(this.loadedSegments.some(c=>c.start<=t&&c.end>=e))return;let n=this.source._read(t,e),a={start:t,end:e,promise:n};this.loadingSegments.push(a);let o=await n;Lt(this.loadingSegments,a),this.insertIntoLoadedSegments(t,o)}insertIntoLoadedSegments(t,e){let r={start:t,end:t+e.byteLength,bytes:e,view:new DataView(e.buffer),age:this.nextAge++},s=E(this.loadedSegments,t,n=>n.start);(s===-1||this.loadedSegments[s].start=r.end)break;r.start<=a.start&&a.end<=r.end&&(this.loadedSegments.splice(n,1),n--)}for(;this.totalStoredBytes>this.maxStorableBytes&&this.loadedSegments.length>1;){let n=null,a=-1;for(let o=0;on.start),s=null;if(r!==-1)for(let n=r;nt)break;if(e<=a.end){s=a;break}}if(!s)throw new Error(`No segment loaded for range [${t}, ${e}).`);return s.age=this.nextAge++,{view:s.view,offset:s.bytes.byteOffset+t-s.start}}forgetRange(t,e){if(e<=t)return;let r=E(this.loadedSegments,t,n=>n.start);if(r===-1)return;let s=this.loadedSegments[r];s.start!==t||s.end!==e||(this.loadedSegments.splice(r,1),this.totalStoredBytes-=s.bytes.byteLength)}};var de=class{constructor(t){this.reader=t;this.pos=0}readRange(t,e){let{view:r,offset:s}=this.reader.getViewAndOffset(t,e);return new Uint8Array(r.buffer,s,e-t)}readU8(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+1);return this.pos++,t.getUint8(e)}readU16(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+2);return this.pos+=2,t.getUint16(e,!1)}readU24(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+3);this.pos+=3;let r=t.getUint16(e,!1),s=t.getUint8(e+2);return r*256+s}readS32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getUint32(e,!1)}readI32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU64(){let t=this.readU32(),e=this.readU32();return t*4294967296+e}readF64(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+8);return this.pos+=8,t.getFloat64(e,!1)}readFixed_16_16(){return this.readS32()/65536}readFixed_2_30(){return this.readS32()/1073741824}readAscii(t){let{view:e,offset:r}=this.reader.getViewAndOffset(this.pos,this.pos+t);this.pos+=t;let s="";for(let n=0;ns.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();let e="video/mp4";if(this.tracks.length>0){let r=await Promise.all(this.tracks.map(n=>n.inputTrack.getCodecMimeType())),s=[...new Set(r)];e+=`; codecs="${s.join(", ")}"`}return e}readMetadata(){return this.metadataPromise??=(async()=>{let e=await this.isobmffReader.reader.source._getSize();for(;this.isobmffReader.pos=0&&ss.presentationTimestamp-n.presentationTimestamp),e.sampleTable}async readFragment(){let e=this.isobmffReader.pos;await this.isobmffReader.reader.loadRange(this.isobmffReader.pos,this.isobmffReader.pos+16);let r=this.isobmffReader.readBoxHeader();l(r.name==="moof"),await this.isobmffReader.reader.loadRange(e,e+r.totalSize),this.isobmffReader.pos=e,this.traverseBox();let s=K(this.fragments,e,a=>a.moofOffset);l(s!==-1);let n=this.fragments[s];l(n.moofOffset===e),this.isobmffReader.reader.forgetRange(e,e+r.totalSize);for(let[a,o]of n.trackData){if(o.startTimestampIsFinal)continue;let c=this.tracks.find(m=>m.id===a);this.isobmffReader.pos=0;let u=null,d=null,f=E(c.fragments,e-1,m=>m.moofOffset);for(f!==-1&&(u=c.fragments[f],d=u,this.isobmffReader.pos=u.moofOffset+u.moofSize);this.isobmffReader.posp.moofOffset);if(b===-1){this.isobmffReader.pos=m;let p=await this.readFragment();u&&(u.nextFragment=p),u=p}else{let p=this.fragments[b];u&&(u.nextFragment=p),u=p}}this.isobmffReader.pos=m+g.totalSize}u&&u.trackData.has(a)&&(d=u)}if(d){let m=d.trackData.get(a);l(m.startTimestampIsFinal),Tr(o,m.endTimestamp)}o.startTimestampIsFinal=!0}return n}readContiguousBoxes(e){let r=this.isobmffReader.pos;for(;this.isobmffReader.pos-rf.every((m,g)=>m===u[g]));d===-1?n.rotation=0:n.rotation=90*d}break;case"mdhd":{let n=this.currentTrack;l(n);let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3,a===0?(this.isobmffReader.pos+=8,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU32()):a===1&&(this.isobmffReader.pos+=16,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU64())}break;case"hdlr":{let n=this.currentTrack;l(n),this.isobmffReader.pos+=8;let a=this.isobmffReader.readAscii(4);a==="vide"?n.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null}:a==="soun"&&(n.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null})}break;case"stbl":{let n=this.currentTrack;l(n),n.sampleTableOffset=e,this.readContiguousBoxes(r.contentSize)}break;case"stsd":{let n=this.currentTrack;if(l(n),n.info===null||n.sampleTable)break;let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=this.isobmffReader.readU32();for(let c=0;c0){if(d===1)this.isobmffReader.pos+=4*4;else if(d===2){this.isobmffReader.pos+=4,m=this.isobmffReader.readF64(),f=this.isobmffReader.readU32(),this.isobmffReader.pos+=4;let g=this.isobmffReader.readU32(),b=this.isobmffReader.readU32(),p=this.isobmffReader.readU32(),k=this.isobmffReader.readU32()}}n.info.numberOfChannels=f,n.info.sampleRate=m,this.readContiguousBoxes(e+u.totalSize-this.isobmffReader.pos)}}}break;case"avcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"hvcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"colr":{let n=this.currentTrack;if(l(n&&n.info?.type==="video"),this.isobmffReader.readAscii(4)!=="nclx")break;let o=this.isobmffReader.readU16(),c=this.isobmffReader.readU16(),u=this.isobmffReader.readU16(),d=!!(this.isobmffReader.readU8()&128);n.info.colorSpace={primaries:Ut[o],transfer:Bt[c],matrix:Nt[u],fullRange:d}}break;case"wave":r.totalSize>8&&this.readContiguousBoxes(r.contentSize);break;case"esds":{let n=this.currentTrack;l(n&&n.info),this.isobmffReader.pos+=4;let a=this.isobmffReader.readU8();l(a===3),this.isobmffReader.readIsomVariableInteger(),this.isobmffReader.pos+=2;let o=this.isobmffReader.readU8(),c=(o&128)!==0,u=(o&64)!==0,d=(o&32)!==0;if(c&&(this.isobmffReader.pos+=2),u){let p=this.isobmffReader.readU8();this.isobmffReader.pos+=p}d&&(this.isobmffReader.pos+=2);let f=this.isobmffReader.readU8();l(f===4),this.isobmffReader.readIsomVariableInteger();let m=this.isobmffReader.readU8();l(m===64),this.isobmffReader.pos+=12;let g=this.isobmffReader.readU8();l(g===5);let b=this.isobmffReader.readIsomVariableInteger();n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+b)}break;case"stts":{let n=this.currentTrack;if(l(n),!n.sampleTable)break;this.isobmffReader.pos+=4;let a=this.isobmffReader.readU32(),o=0,c=0;for(let u=0;ux.id===a);if(!o)break;o.fragmentLookupTable=[];let c=this.isobmffReader.readU32(),u=(c&48)>>4,d=(c&12)>>2,f=c&3,m=this.isobmffReader,g=[m.readU8.bind(m),m.readU16.bind(m),m.readU24.bind(m),m.readU32.bind(m)],b=g[u],p=g[d],k=g[f],T=this.isobmffReader.readU32();for(let x=0;xa.moofOffset);this.fragments.splice(n+1,0,this.currentFragment);for(let[,a]of this.currentFragment.trackData){let o=a.samples[0],c=F(a.samples);this.currentFragment.dataStart=Math.min(this.currentFragment.dataStart,o.byteOffset),this.currentFragment.dataEnd=Math.max(this.currentFragment.dataEnd,c.byteOffset+c.byteSize)}this.currentFragment=null}break;case"traf":if(l(this.currentFragment),this.readContiguousBoxes(r.contentSize),this.currentTrack){let n=this.currentFragment.trackData.get(this.currentTrack.id);if(n){let a=E(this.currentTrack.fragments,this.currentFragment.moofOffset,c=>c.moofOffset);this.currentTrack.fragments.splice(a+1,0,this.currentFragment);let{currentFragmentState:o}=this.currentTrack;l(o),o.startTimestamp!==null&&(Tr(n,o.startTimestamp),n.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{l(this.currentFragment),this.isobmffReader.pos+=1;let n=this.isobmffReader.readU24(),a=!!(n&1),o=!!(n&2),c=!!(n&8),u=!!(n&16),d=!!(n&32),f=!!(n&65536),m=!!(n&131072),g=this.isobmffReader.readU32(),b=this.tracks.find(k=>k.id===g);if(!b)break;let p=this.fragmentTrackDefaults.find(k=>k.trackId===g);this.currentTrack=b,b.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:p?.defaultSampleDescriptionIndex??null,defaultSampleDuration:p?.defaultSampleDuration??null,defaultSampleSize:p?.defaultSampleSize??null,defaultSampleFlags:p?.defaultSampleFlags??null,startTimestamp:null},a?b.currentFragmentState.baseDataOffset=this.isobmffReader.readU64():m&&(b.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),o&&(b.currentFragmentState.sampleDescriptionIndex=this.isobmffReader.readU32()),c&&(b.currentFragmentState.defaultSampleDuration=this.isobmffReader.readU32()),u&&(b.currentFragmentState.defaultSampleSize=this.isobmffReader.readU32()),d&&(b.currentFragmentState.defaultSampleFlags=this.isobmffReader.readU32()),f&&(b.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let n=this.currentTrack;if(!n)break;l(n.currentFragmentState);let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=a===0?this.isobmffReader.readU32():this.isobmffReader.readU64();n.currentFragmentState.startTimestamp=o}break;case"trun":{let n=this.currentTrack;if(!n)break;if(l(this.currentFragment),l(n.currentFragmentState),this.currentFragment.trackData.has(n.id))throw new Error("Can't have two trun boxes for the same track in one fragment.");let a=this.isobmffReader.readU8(),o=this.isobmffReader.readU24(),c=!!(o&1),u=!!(o&4),d=!!(o&256),f=!!(o&512),m=!!(o&1024),g=!!(o&2048),b=this.isobmffReader.readU32(),p=n.currentFragmentState.baseDataOffset;c&&(p+=this.isobmffReader.readI32());let k=null;u&&(k=this.isobmffReader.readU32());let T=p;if(b===0){this.currentFragment.implicitBaseDataOffset=T;break}let x=0,C={startTimestamp:0,endTimestamp:0,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(n.id,C);for(let I=0;I({presentationTimestamp:I.presentationTimestamp,sampleIndex:R})).sort((I,R)=>I.presentationTimestamp-R.presentationTimestamp);let O=C.samples[C.presentationTimestamps[0].sampleIndex],_=C.samples[F(C.presentationTimestamps).sampleIndex];C.startTimestamp=O.presentationTimestamp,C.endTimestamp=_.presentationTimestamp+_.duration,this.currentFragment.implicitBaseDataOffset=T}break}this.isobmffReader.pos=s}},pt=class{constructor(t){this.internalTrack=t;this.chunkToSampleIndex=new WeakMap;this.chunkToFragmentLocation=new WeakMap}getCodec(){throw new Error("Not implemented on base class.")}async computeDuration(){let e=(await this.getChunk(1/0,{metadataOnly:!0}))?.timestamp;return e?e/1e6:0}async getFirstChunk(t){return this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(()=>{let e=this.internalTrack.fragments[0];return{fragmentIndex:e?0:-1,sampleIndex:e?0:-1,correctSampleFound:!!e}},0,1/0,t):this.fetchChunkForSampleIndex(0,t)}roundToMicrosecond(t){return(Math.floor(t*1e6)+.99999999)/1e6}async getChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findSampleInFragmentsForTimestamp(r),r,r,e);{let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=gr(s,r);return this.fetchChunkForSampleIndex(n,e)}}async getNextChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let s=this.chunkToFragmentLocation.get(t);if(s===void 0)throw new Error("Chunk was not created from this track.");let n=s.fragment.trackData.get(this.internalTrack.id),a=n.samples[s.sampleIndex],o=K(this.internalTrack.fragments,s.fragment.moofOffset,c=>c.moofOffset);return l(o!==-1),this.performFragmentedLookup(()=>{if(s.sampleIndex+1f.moofOffset);return l(d!==-1),{fragmentIndex:d,sampleIndex:0,correctSampleFound:!0}}return{fragmentIndex:o,sampleIndex:-1,correctSampleFound:!1}}},a.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");return this.fetchChunkForSampleIndex(r+1,e)}async getKeyChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findKeySampleInFragmentsForTimestamp(r),r,r,e);let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=gr(s,r),a=n===-1?-1:Bi(s,n);return this.fetchChunkForSampleIndex(a,e)}async getNextKeyChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let a=this.chunkToFragmentLocation.get(t);if(a===void 0)throw new Error("Chunk was not created from this track.");let o=a.fragment.trackData.get(this.internalTrack.id),c=o.samples[a.sampleIndex],u=K(this.internalTrack.fragments,a.fragment.moofOffset,d=>d.moofOffset);return l(u!==-1),this.performFragmentedLookup(()=>{let d=o.samples.findIndex((f,m)=>f.isKeyFrame&&m>a.sampleIndex);if(d!==-1)return{fragmentIndex:u,sampleIndex:d,correctSampleFound:!0};{let f=a.fragment;for(;f.nextFragment;){f=f.nextFragment;let m=f.trackData.get(this.internalTrack.id);if(m){let g=K(this.internalTrack.fragments,f.moofOffset,p=>p.moofOffset);l(g!==-1);let b=m.samples.findIndex(p=>p.isKeyFrame);if(b===-1)throw new Error("Not supported: Fragment does not contain key sample.");return{fragmentIndex:g,sampleIndex:b,correctSampleFound:!0}}}return{fragmentIndex:u,sampleIndex:-1,correctSampleFound:!1}}},c.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Ni(s,r);return this.fetchChunkForSampleIndex(n,e)}async fetchChunkForSampleIndex(t,e){if(t===-1)return null;let r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),s=Ui(r,t);if(!s)return null;let n;e.metadataOnly?n=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(s.chunkOffset,s.chunkOffset+s.chunkSize),n=this.internalTrack.demuxer.chunkReader.readRange(s.sampleOffset,s.sampleOffset+s.sampleSize));let a=1e6*s.presentationTimestamp/this.internalTrack.timescale,o=1e6*s.duration/this.internalTrack.timescale,c=this.createChunk(n,a,o,s.isKeyFrame);return this.chunkToSampleIndex.set(c,t),c}async fetchChunkInFragment(t,e,r){if(e===-1)return null;let n=t.trackData.get(this.internalTrack.id).samples[e];l(n);let a;r.metadataOnly?a=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(t.dataStart,t.dataEnd),a=this.internalTrack.demuxer.chunkReader.readRange(n.byteOffset,n.byteOffset+n.byteSize));let o=1e6*n.presentationTimestamp/this.internalTrack.timescale,c=1e6*n.duration/this.internalTrack.timescale,u=this.createChunk(a,o,c,n.isKeyFrame);return this.chunkToFragmentLocation.set(u,{fragment:t,sampleIndex:e}),u}findSampleInFragmentsForTimestamp(t){let e=E(this.internalTrack.fragments,t,n=>n.trackData.get(this.internalTrack.id).startTimestamp),r=-1,s=!1;if(e!==-1){let a=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=E(a.presentationTimestamps,t,c=>c.presentationTimestamp);l(o!==-1),r=a.presentationTimestamps[o].sampleIndex,s=tn.trackData.get(this.internalTrack.id).startTimestamp),r=-1,s=!1;if(e!==-1){let a=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=Qt(a.presentationTimestamps,u=>a.samples[u.sampleIndex].isKeyFrame&&u.presentationTimestamp<=t);if(o===-1)throw new Error("Not supported: Fragment does not begin with a key sample.");r=a.presentationTimestamps[o].sampleIndex,s=tT.timestamp);k!==-1&&(p=this.internalTrack.fragmentLookupTable[k])}if(o===-1)d.pos=p?.moofOffset??0;else{let k=this.internalTrack.fragments[o];!p||k.moofOffset>=k.moofOffset?(d.pos=k.moofOffset+k.moofSize,m=k):d.pos=p.moofOffset}for(;d.posr)break;if(m.nextFragment){d.pos=m.nextFragment.moofOffset+m.nextFragment.moofSize,m=m.nextFragment;continue}}await d.reader.loadRange(d.pos,d.pos+16);let k=d.pos,T=d.readBoxHeader();if(T.name==="moof"){let x=K(n.fragments,k,C=>C.moofOffset);if(x===-1){d.pos=k;let C=await n.readFragment();m&&(m.nextFragment=C),m=C;let{fragmentIndex:O,sampleIndex:_,correctSampleFound:I}=t();if(I){let R=this.internalTrack.fragments[O];return this.fetchChunkInFragment(R,_,s)}O!==-1&&(g=O,b=_)}else{let C=n.fragments[x];m&&(m.nextFragment=C),m=C}}d.pos=k+T.totalSize}if(g!==-1){let k=this.internalTrack.fragments[g];return this.fetchChunkInFragment(k,b,s)}return null}finally{a()}}},Mt=class extends pt{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getCodedWidth(){return this.internalTrack.info.width}async getCodedHeight(){return this.internalTrack.info.height}async getRotation(){return this.internalTrack.rotation}async getDecoderConfig(){return{codec:ur(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}}createChunk(t,e,r,s){return new EncodedVideoChunk({data:t,timestamp:e,duration:r,type:s?"key":"delta"})}},Dt=class extends pt{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}async getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return{codec:lr(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}}createChunk(t,e,r,s){return new EncodedAudioChunk({data:t,timestamp:e,duration:r,type:s?"key":"delta"})}},gr=(i,t)=>{let e=E(i.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:i.presentationTimestamps[e].sampleIndex},Ui=(i,t)=>{let e=E(i.sampleTimingEntries,t,p=>p.startIndex),r=i.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,a=E(i.sampleCompositionTimeOffsets,t,p=>p.startIndex),o=i.sampleCompositionTimeOffsets[a];o&&(n+=o.offset);let c=i.sampleSizes[Math.min(t,i.sampleSizes.length-1)],u=E(i.sampleToChunk,t,p=>p.startSampleIndex),d=i.sampleToChunk[u];l(d);let f=d.startChunkIndex+Math.floor((t-d.startSampleIndex)/d.samplesPerChunk),m=i.chunkOffsets[f],g=0,b=m;if(i.sampleSizes.length===1)b+=c*(t-d.startSampleIndex),g+=c*d.samplesPerChunk;else{let p=d.startSampleIndex+(f-d.startChunkIndex)*d.samplesPerChunk;for(let k=p;kp)!==-1:!0}},Bi=(i,t)=>{if(!i.keySampleIndices)return t;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e]??-1},Ni=(i,t)=>{if(!i.keySampleIndices)return t+1;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e+1]??-1},Tr=(i,t)=>{i.startTimestamp+=t,i.endTimestamp+=t;for(let e of i.samples)e.presentationTimestamp+=t;for(let e of i.presentationTimestamps)e.presentationTimestamp+=t};var Z=class{},Re=class extends Z{async _canReadInput(t){if(await t._mainReader.source._getSize()<8)return!1;let r=new de(t._mainReader);return r.pos=4,r.readAscii(4)==="ftyp"}_createDemuxer(t){return new ht(t)}},Oe=class extends Z{async _canReadInput(){return!1}_createDemuxer(){throw new Error("Not implemented")}},Fe=new Re,xr=Fe,Cr=Fe,bt=new Oe,Pt=bt,wr=bt,yr=[Fe,Pt];var kt=class{constructor(t){this._demuxerPromise=null;this._format=null;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!Array.isArray(t.formats)||t.formats.some(e=>!(e instanceof Z)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(t.source instanceof j))throw new TypeError("options.source must be a Source.");this._formats=t.formats,this._source=t.source,this._mainReader=new ke(t.source)}_getDemuxer(){return this._demuxerPromise??=(async()=>{await this._mainReader.loadRange(0,4096);for(let t of this._formats)if(await t._canReadInput(this))return this._format=t,t._createDemuxer(this);throw new Error("Input has an unrecognizable format.")})()}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async computeDuration(){return(await this._getDemuxer()).computeDuration()}async getTracks(){return(await this._getDemuxer()).getTracks()}async getVideoTracks(){return(await this.getTracks()).filter(e=>e.isVideoTrack())}async getPrimaryVideoTrack(){return(await this.getTracks()).find(e=>e.isVideoTrack())??null}async getAudioTracks(){return(await this.getTracks()).filter(e=>e.isAudioTrack())}async getPrimaryAudioTrack(){return(await this.getTracks()).find(e=>e.isAudioTrack())??null}async getMimeType(){return(await this._getDemuxer()).getMimeType()}};var $=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.metadataOnly!==void 0&&typeof i.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.")},N=i=>{if(typeof i!="number"||Number.isNaN(i))throw new TypeError("timestamp must be a number.")},ge=class{async*chunks(t,e=1/0){let r=[],{promise:s,resolve:n}=M(),{promise:a,resolve:o}=M(),c=!1,u=null,d=[],f=()=>Math.max(2,d.length);(async()=>{let m=t??await this.getFirstChunk();for(;m&&!c&&!(m.timestamp/1e6>=e);){if(r.length>f()){({promise:a,resolve:o}=M()),await a;continue}r.push(m),n(),{promise:s,resolve:n}=M(),m=await this.getNextChunk(m)}c=!0,n()})().catch(m=>{u||(u=m,n())});try{for(;;){if(u)throw u;if(r.length>0){yield r.shift();let m=performance.now();for(d.push(m);d.length>0&&m-d[0]>=1e3;)d.shift();o()}else if(!c)await s;else break}}finally{c=!0,o()}}},Te=class{_duplicateFrame(t){return structuredClone(t)}async*mediaFramesAtTimestamps(t){Kt(t);let e=$t(t),r=[],s=8,n=[],{promise:a,resolve:o}=M(),{promise:c,resolve:u}=M(),d=!1,f=!1,m=null,g=null,b=T=>{n.push(T),o(),{promise:a,resolve:o}=M()},p=new Error,k=await this._createDecoder(T=>{if(u(),f){T.close();return}let x=!1;for(;r.length>0&&r[0]===T.timestamp;)b(this._duplicateFrame(T)),r.shift(),x=!0;x?(g?.close(),g=T):T.close()},T=>{m||(T.stack=p.stack,m=T,o())});(async()=>{let T=this._createChunkDrain(),x=null,C=null;for await(let O of e){for(N(O);n.length+k.decodeQueueSize>s;)({promise:c,resolve:u}=M()),await c;if(f)break;let _=await T.getChunk(O);if(!_){b(null);continue}let I=await T.getKeyChunk(O);if(!I){b(null);continue}for(r.push(_.timestamp),x&&I.timestamp===x.timestamp&&_.timestamp>=C.timestamp?(l(C),_.timestamp===C.timestamp&&r.length===1&&(g&&b(this._duplicateFrame(g)),r.shift())):(x=I,C=I,k.decode(I));C.timestamp!==_.timestamp;){let R=await T.getNextChunk(C);l(R),C=R,k.decode(R)}k.decodeQueueSize>=10&&await new Promise(R=>k.addEventListener("dequeue",R,{once:!0}))}await k.flush(),k.close(),d=!0,o()})().catch(T=>{m||(m=T,o())});try{for(;;){if(m)throw m;if(n.length>0){let T=n.shift();l(T!==void 0),yield T,u()}else if(!d)await a;else break}}finally{f=!0,u();for(let T of n)T?.close();g?.close()}}async*mediaFramesInRange(t=0,e=1/0){N(t),N(e);let r=8,s=[],n=!1,a=null,{promise:o,resolve:c}=M(),{promise:u,resolve:d}=M(),f=!1,m=!1,g=null,b=new Error,p=await this._createDecoder(x=>{d();let C=x.timestamp/1e6;if(C>=e&&(m=!0),m){x.close();return}a&&(C>t?(s.push(a),n=!0):a.close()),C>=t&&(s.push(x),n=!0),a=n?null:x,s.length>0&&(c(),{promise:o,resolve:c}=M())},x=>{g||(x.stack=b.stack,g=x,c())}),k=this._createChunkDrain(),T=await k.getKeyChunk(t)??await k.getFirstChunk();if(T){(async()=>{let x=T,C=1/0;if(e<1/0){let _=await k.getChunk(e),I=_?_.type==="key"&&_.timestamp/1e6===e?_:await k.getNextKeyChunk(_):null;I&&(C=I.timestamp/1e6)}let O=k.chunks(T,C);for(await O.next();x&&!m;){if(s.length+p.decodeQueueSize>r){({promise:u,resolve:d}=M()),await u;continue}p.decode(x);let _=await O.next();if(_.done)break;x=_.value}await O.return(),await p.flush(),p.close(),!n&&a&&s.push(a),f=!0,c()})().catch(x=>{g||(g=x,c())});try{for(;;){if(g)throw g;if(s.length>0)yield s.shift(),d();else if(!f)await o;else break}}finally{m=!0,d();for(let x of s)x.close()}}}},Ve=class extends ge{constructor(t){if(!(t instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._videoTrack=t}getFirstChunk(t={}){return $(t),this._videoTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return N(t),$(e),this._videoTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return $(e),this._videoTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return N(t),$(e),this._videoTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return $(e),this._videoTrack._backing.getNextKeyChunk(t,e)}},Me=class extends Te{constructor(e){if(!(e instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");super();this._decoderConfig=null;this._videoTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._videoTrack.getDecoderConfig();let s=new VideoDecoder({output:e,error:r});return s.configure(this._decoderConfig),s}_createChunkDrain(){return new Ve(this._videoTrack)}async getFrame(e){N(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}frames(e=0,r=1/0){return this.mediaFramesInRange(e,r)}framesAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},gt=class{constructor(t,e){if(!(t instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");if(e&&typeof e!="object")throw new TypeError("dimensions, when defined, must be an object.");if(e&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("dimensions.width must be a positive integer.");if(e&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("dimensions.height must be a positive integer.");this._videoTrack=t,this._dimensions=e,this._videoFrameDrain=new Me(t)}async _videoFrameToWrappedCanvas(t){let e=this._dimensions?.width??await this._videoTrack.getDisplayWidth(),r=this._dimensions?.height??await this._videoTrack.getDisplayHeight(),s=await this._videoTrack.getRotation(),n=document.createElement("canvas");n.width=e,n.height=r;let a=n.getContext("2d",{alpha:!1});l(a),a.translate(e/2,r/2),a.rotate(s*Math.PI/180),a.translate(-e/2,-r/2);let[o,c]=s%180===0?[e,r]:[r,e];a.drawImage(t,(e-o)/2,(r-c)/2,o,c);let u={canvas:n,timestamp:t.timestamp/1e6,duration:(t.duration??0)/1e6};return t.close(),u}async getCanvas(t){N(t);let e=await this._videoFrameDrain.getFrame(t);return e&&this._videoFrameToWrappedCanvas(e)}async*canvases(t=0,e=1/0){for await(let r of this._videoFrameDrain.frames(t,e))yield this._videoFrameToWrappedCanvas(r)}async*canvasesAtTimestamps(t){for await(let e of this._videoFrameDrain.framesAtTimestamps(t))yield e&&this._videoFrameToWrappedCanvas(e)}},De=class extends ge{constructor(t){if(!(t instanceof B))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._audioTrack=t}getFirstChunk(t={}){return $(t),this._audioTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return N(t),$(e),this._audioTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return $(e),this._audioTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return N(t),$(e),this._audioTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return $(e),this._audioTrack._backing.getNextKeyChunk(t,e)}},Pe=class extends Te{constructor(e){if(!(e instanceof B))throw new TypeError("audioTrack must be an InputAudioTrack.");super();this._decoderConfig=null;this._audioTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._audioTrack.getDecoderConfig();let s=new AudioDecoder({output:e,error:r});return s.configure(this._decoderConfig),s}_createChunkDrain(){return new De(this._audioTrack)}async getData(e){N(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}data(e=0,r=1/0){return this.mediaFramesInRange(e,r)}dataAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},Tt=class{constructor(t){if(!(t instanceof B))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioDataDrain=new Pe(t)}_audioDataToWrappedArrayBuffer(t){let e=new AudioBuffer({numberOfChannels:t.numberOfChannels,length:t.numberOfFrames,sampleRate:t.sampleRate}),r=new Float32Array(t.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let a=0;ar.track===e))return;e:for(;;){let e=null,r=1/0;for(let n of this.trackDatas){if(n.chunkQueue.length===0&&!n.track.source._closed)break e;n.chunkQueue.length>0&&n.chunkQueue[0].timestamp=2&&a++;let u={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];zt(r.data,a+0,a+3,u)}createInternalChunk(e,r,a,n,s=null){return{data:e,type:n,timestamp:r,duration:a,additions:s}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let a=Math.floor(1e3*r.timestamp),n=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let m=f.chunkQueue[0];return m&&m.type==="key"});(!this.currentCluster||n&&a-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(a);let s=a-this.currentClusterMsTimestamp;if(s<0)return;if(s>=Vt)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${Vt} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${Vt} milliseconds.`);let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,s,!1);let d=Math.floor(1e3*r.duration);if(d===0&&!r.additions){u.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[c,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new _e(e.lastWrittenMsTimestamp-a)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,d>0?{id:155,data:d}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,a+d),e.lastWrittenMsTimestamp=a,this.trackDatasInCurrentCluster.add(e)}createNewCluster(e){this.currentCluster&&!this.format._options.streamable&&this.finalizeCurrentCluster(),this.currentCluster={id:524531317,size:this.format._options.streamable?-1:kr,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){l(this.currentCluster);let e=this.writer.getPos()-this.dataOffsets.get(this.currentCluster),r=this.writer.getPos();this.writer.seek(this.offsets.get(this.currentCluster)+4),this.writeEBMLVarInt(e,kr),this.writer.seek(r);let a=this.offsets.get(this.currentCluster)-this.segmentDataOffset;l(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(n=>({id:183,data:[{id:247,data:n.track.id},{id:241,data:a}]}))]})}async onTrackClose(){let e=await this.mutex.acquire();await this.interleaveChunks(),e()}async finalize(){let e=await this.mutex.acquire();this.segment||(this.createTracks(),this.createSegment());for(let r of this.trackDatas)for(;r.chunkQueue.length>0;)this.writeBlock(r,r.chunkQueue.shift());if(!this.format._options.streamable&&this.currentCluster&&this.finalizeCurrentCluster(),l(this.cues),this.writeEBML(this.cues),!this.format._options.streamable){let r=this.writer.getPos(),a=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.offsets.get(this.segment)+4),this.writeEBMLVarInt(a,br),this.segmentDuration.data=new pe(this.duration),this.writer.seek(this.offsets.get(this.segmentDuration)),this.writeEBML(this.segmentDuration),this.seekHead.data[0].data[1].data=this.offsets.get(this.cues)-this.segmentDataOffset,this.seekHead.data[1].data[1].data=this.offsets.get(this.segmentInfo)-this.segmentDataOffset,this.seekHead.data[2].data[1].data=this.offsets.get(this.tracksElement)-this.segmentDataOffset,this.writer.seek(this.offsets.get(this.seekHead)),this.writeEBML(this.seekHead),this.writer.seek(r)}e()}};var Y=class{},Je=class extends Y{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(t.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=t}_createMuxer(t){return new Ye(t,this)}},Ae=class extends Y{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.streamable!==void 0&&typeof t.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=t}_createMuxer(t){return new Ze(t,this)}},oe=class extends Ae{};var ce=class{constructor(){this._connectedTrack=null;this._closed=!1;this._offsetTimestamps=!1}_ensureValidDigest(){if(!this._connectedTrack)throw new Error("Cannot call digest without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call digest before output has been started.");if(this._connectedTrack.output._finalizing)throw new Error("Cannot call digest after output has started finalizing.");if(this._closed)throw new Error("Cannot call digest after source has been closed.")}_start(){}async _flush(){}close(){if(this._closed)throw new Error("Source already closed.");if(!this._connectedTrack)throw new Error("Cannot call close without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call close before output has been started.");this._closed=!0,!this._connectedTrack.output._finalizing&&this._connectedTrack.output._muxer.onTrackClose(this._connectedTrack)}},L=class extends ce{constructor(e){super();this._connectedTrack=null;if(!ae.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${ae.join(", ")}.`);this._codec=e}},et=class extends L{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,t,e)}},Mi=5,Di=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!ae.includes(i.codec))throw new TypeError(`Invalid video codec '${i.codec}'. Must be one of: ${ae.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.latencyMode!==void 0&&!["quality","realtime"].includes(i.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.");if(i.onEncodingError!==void 0&&typeof i.onEncodingError!="function")throw new TypeError("config.onEncodingError, when provided, must be a function.")},Ie=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;Di(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(t.codedWidth!==this.lastWidth||t.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${t.codedWidth}x${t.codedHeight}.`)}else this.lastWidth=t.codedWidth,this.lastHeight=t.codedHeight;this.ensureEncoder(t),l(this.encoder);let e=Math.floor(t.timestamp/1e6/Mi);this.encoder.encode(t,{keyFrame:e!==this.lastMultipleOfKeyFrameInterval}),this.lastMultipleOfKeyFrameInterval=e,this.encoder.encodeQueueSize>=4&&await new Promise(r=>this.encoder.addEventListener("dequeue",r,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>void this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:this.codecConfig.onEncodingError??(e=>console.error("VideoEncoder error:",e))}),this.encoder.configure({codec:cr(this.codecConfig.codec,t.codedWidth,t.codedHeight,this.codecConfig.bitrate),width:t.codedWidth,height:t.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...mr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},tt=class extends L{constructor(t){super(t.codec),this._encoder=new Ie(this,t)}digest(t){if(!(t instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},rt=class extends L{constructor(t,e){if(!(t instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new Ie(this,e),this._canvas=t}digest(t,e=0){if(!Number.isFinite(t)||t<0)throw new TypeError("timestamp must be a non-negative number.");if(!Number.isFinite(e)||e<0)throw new TypeError("duration must be a non-negative number.");let r=new VideoFrame(this._canvas,{timestamp:Math.round(1e6*t),duration:Math.round(1e6*e),alpha:"discard"}),a=this._encoder.digest(r);return r.close(),a}_flush(){return this._encoder.flush()}},it=class extends L{constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._offsetTimestamps=!0;this._encoder=new Ie(this,r),this._track=e}_start(){this._abortController=new AbortController;let e=new MediaStreamTrackProcessor({track:this._track}),r=new WritableStream({write:a=>{this._encoder.digest(a),a.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(a=>{a instanceof DOMException&&a.name==="AbortError"||console.error("Pipe error:",a)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},Q=class extends ce{constructor(e){super();this._connectedTrack=null;if(!se.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${se.join(", ")}.`);this._codec=e}},nt=class extends Q{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,t,e)}},Pi=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!se.includes(i.codec))throw new TypeError(`Invalid audio codec '${i.codec}'. Must be one of: ${se.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.onEncodingError!==void 0&&typeof i.onEncodingError!="function")throw new TypeError("config.onEncodingError, when provided, must be a function.")},Ee=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;Pi(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(t.numberOfChannels!==this.lastNumberOfChannels||t.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${t.numberOfChannels} channels at ${t.sampleRate} Hz.`)}else this.lastNumberOfChannels=t.numberOfChannels,this.lastSampleRate=t.sampleRate;this.ensureEncoder(t),l(this.encoder),this.encoder.encode(t),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>void this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:this.codecConfig.onEncodingError??(e=>console.error("AudioEncoder error:",e))}),this.encoder.configure({codec:dr(this.codecConfig.codec,t.numberOfChannels,t.sampleRate),numberOfChannels:t.numberOfChannels,sampleRate:t.sampleRate,bitrate:this.codecConfig.bitrate,...fr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},at=class extends Q{constructor(t){super(t.codec),this._encoder=new Ee(this,t)}digest(t){if(!(t instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},st=class extends Q{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new Ee(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,a=e.sampleRate,n=e.length,s=new Float32Array(r*n);for(let u=0;u{this._encoder.digest(a),a.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(a=>{a instanceof DOMException&&a.name==="AbortError"||console.error("Pipe error:",a)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},ue=class extends ce{constructor(e){super();this._connectedTrack=null;if(!Se.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Se.join(", ")}.`);this._codec=e}},ct=class extends ue{constructor(t){super(t),this._parser=new Ne({codec:t,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r)})}digest(t){if(typeof t!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(t),this._connectedTrack.output._muxer.mutex.currentPromise}};var ut=class{constructor(t){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new q;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.format instanceof Y))throw new TypeError("options.format must be an OutputFormat.");if(!(t.target instanceof G))throw new TypeError("options.target must be a Target.");if(t.target._output)throw new Error("Target is already used for another output.");t.target._output=this,this._writer=t.target._createWriter(),this._muxer=t.format._createMuxer(this)}addVideoTrack(t,e={}){if(!(t instanceof L))throw new TypeError("source must be a VideoSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");if(typeof e.rotation=="number"&&![0,90,180,270].includes(e.rotation))throw new TypeError(`Invalid video rotation: ${e.rotation}. Has to be 0, 90, 180 or 270.`);if(Array.isArray(e.rotation)&&(e.rotation.length!==9||e.rotation.some(r=>!Number.isFinite(r))))throw new TypeError(`Invalid video transformation matrix: ${e.rotation.join()}`);if(e.frameRate!==void 0&&(!Number.isInteger(e.frameRate)||e.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",t,e)}addAudioTrack(t,e={}){if(!(t instanceof Q))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",t,e)}addSubtitleTrack(t,e={}){if(!(t instanceof ue))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",t,e)}_addTrack(t,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let a={id:this._tracks.length+1,output:this,type:t,source:e,metadata:r};this._muxer.beforeTrackAdd(a),this._tracks.push(a),e._connectedTrack=a}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let t=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();t()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),t()}};var j=class{constructor(){this._sizePromise=null}_getSize(){return this._sizePromise??=this._retrieveSize()}},dt=class extends j{constructor(t){if(!(t instanceof ArrayBuffer)&&!(t instanceof Uint8Array))throw new TypeError("buffer must be an ArrayBuffer or Uint8Array.");super(),this._bytes=t instanceof Uint8Array?t:new Uint8Array(t)}async _read(t,e){return this._bytes.subarray(t,e)}async _retrieveSize(){return this._bytes.byteLength}},lt=class extends j{constructor(t){if(!(t instanceof Blob))throw new TypeError("blob must be a Blob.");super(),this._blob=t}async _read(t,e){let a=await this._blob.slice(t,e).arrayBuffer();return new Uint8Array(a)}async _retrieveSize(){return this._blob.size}},mt=class extends j{constructor(e,r={}){if(typeof e!="string")throw new TypeError("url must be a string.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.withCredentials!==void 0&&typeof r.withCredentials!="boolean")throw new TypeError("options.withCredentials, when specified, must be a boolean.");super();this._fullData=null;this._url=e,this._withCredentials=r.withCredentials??!1}_makeRequest(e){return new Promise((r,a)=>{let n=new XMLHttpRequest;n.open("GET",this._url,!0),n.responseType="arraybuffer",n.withCredentials=this._withCredentials,e&&n.setRequestHeader("Range",`bytes=${e.start}-${e.end-1}`),n.onload=()=>{if(n.status>=200&&n.status<300){let s=n.response;e||(this._fullData=s),r({response:s,statusCode:n.status})}else a(new Error(`Error fetching ${this._url}: ${n.status} ${n.statusText}`))},n.onerror=()=>{a(new Error("Network error occurred."))},n.ontimeout=()=>{a(new Error("Request timed out."))},n.send()})}async _read(e,r){if(this._fullData)return new Uint8Array(this._fullData,e,r-e);let{response:a,statusCode:n}=await this._makeRequest({start:e,end:r});return n===200?new Uint8Array(a).subarray(e,r):new Uint8Array(a)}async _retrieveSize(){if(this._fullData)return this._fullData.byteLength;let e=new XMLHttpRequest;e.open("HEAD",this._url,!0),e.withCredentials=this._withCredentials,await new Promise((a,n)=>{e.onload=()=>{e.status>=200&&e.status<300?a():n(new Error(`Error fetching ${this._url} (HEAD): ${e.status} ${e.statusText}`))},e.onerror=()=>{a()},e.send()});let r=e.getResponseHeader("Content-Length");if(!r){let{response:a}=await this._makeRequest();return a.byteLength}return parseInt(r,10)}};var ft=class{constructor(t){this.input=t}};var be=class{constructor(t){this._backing=t}isVideoTrack(){return this instanceof U}isAudioTrack(){return this instanceof B}computeDuration(){return this._backing.computeDuration()}},U=class extends be{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getCodedWidth(){return this._backing.getCodedWidth()}getCodedHeight(){return this._backing.getCodedHeight()}getRotation(){return this._backing.getRotation()}async getDisplayWidth(){return await this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}async getDisplayHeight(){return await this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}},B=class extends be{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getNumberOfChannels(){return this._backing.getNumberOfChannels()}getSampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}};var ke=class{constructor(t,e=1/0){this.source=t;this.maxStorableBytes=e;this.loadedSegments=[];this.loadingSegments=[];this.sourceSizePromise=null;this.nextAge=0;this.totalStoredBytes=0}async loadRange(t,e){e=Math.min(e,await this.source._getSize());let r=this.loadingSegments.find(c=>c.start<=t&&c.end>=e);if(r){await r.promise;return}if(this.loadedSegments.some(c=>c.start<=t&&c.end>=e))return;let n=this.source._read(t,e),s={start:t,end:e,promise:n};this.loadingSegments.push(s);let o=await n;Lt(this.loadingSegments,s),this.insertIntoLoadedSegments(t,o)}insertIntoLoadedSegments(t,e){let r={start:t,end:t+e.byteLength,bytes:e,view:new DataView(e.buffer),age:this.nextAge++},a=E(this.loadedSegments,t,n=>n.start);(a===-1||this.loadedSegments[a].start=r.end)break;r.start<=s.start&&s.end<=r.end&&(this.loadedSegments.splice(n,1),n--)}for(;this.totalStoredBytes>this.maxStorableBytes&&this.loadedSegments.length>1;){let n=null,s=-1;for(let o=0;on.start),a=null;if(r!==-1)for(let n=r;nt)break;if(e<=s.end){a=s;break}}if(!a)throw new Error(`No segment loaded for range [${t}, ${e}).`);return a.age=this.nextAge++,{view:a.view,offset:a.bytes.byteOffset+t-a.start}}forgetRange(t,e){if(e<=t)return;let r=E(this.loadedSegments,t,n=>n.start);if(r===-1)return;let a=this.loadedSegments[r];a.start!==t||a.end!==e||(this.loadedSegments.splice(r,1),this.totalStoredBytes-=a.bytes.byteLength)}};var de=class{constructor(t){this.reader=t;this.pos=0}readRange(t,e){let{view:r,offset:a}=this.reader.getViewAndOffset(t,e);return new Uint8Array(r.buffer,a,e-t)}readU8(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+1);return this.pos++,t.getUint8(e)}readU16(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+2);return this.pos+=2,t.getUint16(e,!1)}readU24(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+3);this.pos+=3;let r=t.getUint16(e,!1),a=t.getUint8(e+2);return r*256+a}readS32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getUint32(e,!1)}readI32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU64(){let t=this.readU32(),e=this.readU32();return t*4294967296+e}readF64(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+8);return this.pos+=8,t.getFloat64(e,!1)}readFixed_16_16(){return this.readS32()/65536}readFixed_2_30(){return this.readS32()/1073741824}readAscii(t){let{view:e,offset:r}=this.reader.getViewAndOffset(this.pos,this.pos+t);this.pos+=t;let a="";for(let n=0;na.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();let e="video/mp4";if(this.tracks.length>0){let r=await Promise.all(this.tracks.map(n=>n.inputTrack.getCodecMimeType())),a=[...new Set(r)];e+=`; codecs="${a.join(", ")}"`}return e}readMetadata(){return this.metadataPromise??=(async()=>{let e=await this.isobmffReader.reader.source._getSize();for(;this.isobmffReader.pos=0&&aa.presentationTimestamp-n.presentationTimestamp),e.sampleTable}async readFragment(){let e=this.isobmffReader.pos;await this.isobmffReader.reader.loadRange(this.isobmffReader.pos,this.isobmffReader.pos+16);let r=this.isobmffReader.readBoxHeader();l(r.name==="moof"),await this.isobmffReader.reader.loadRange(e,e+r.totalSize),this.isobmffReader.pos=e,this.traverseBox();let a=K(this.fragments,e,s=>s.moofOffset);l(a!==-1);let n=this.fragments[a];l(n.moofOffset===e),this.isobmffReader.reader.forgetRange(e,e+r.totalSize);for(let[s,o]of n.trackData){if(o.startTimestampIsFinal)continue;let c=this.tracks.find(m=>m.id===s);this.isobmffReader.pos=0;let u=null,d=null,f=E(c.fragments,e-1,m=>m.moofOffset);for(f!==-1&&(u=c.fragments[f],d=u,this.isobmffReader.pos=u.moofOffset+u.moofSize);this.isobmffReader.posp.moofOffset);if(b===-1){this.isobmffReader.pos=m;let p=await this.readFragment();u&&(u.nextFragment=p),u=p}else{let p=this.fragments[b];u&&(u.nextFragment=p),u=p}}this.isobmffReader.pos=m+g.totalSize}u&&u.trackData.has(s)&&(d=u)}if(d){let m=d.trackData.get(s);l(m.startTimestampIsFinal),Tr(o,m.endTimestamp)}o.startTimestampIsFinal=!0}return n}readContiguousBoxes(e){let r=this.isobmffReader.pos;for(;this.isobmffReader.pos-rf.every((m,g)=>m===u[g]));d===-1?n.rotation=0:n.rotation=90*d}break;case"mdhd":{let n=this.currentTrack;l(n);let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3,s===0?(this.isobmffReader.pos+=8,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU32()):s===1&&(this.isobmffReader.pos+=16,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU64())}break;case"hdlr":{let n=this.currentTrack;l(n),this.isobmffReader.pos+=8;let s=this.isobmffReader.readAscii(4);s==="vide"?n.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null}:s==="soun"&&(n.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null})}break;case"stbl":{let n=this.currentTrack;l(n),n.sampleTableOffset=e,this.readContiguousBoxes(r.contentSize)}break;case"stsd":{let n=this.currentTrack;if(l(n),n.info===null||n.sampleTable)break;let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=this.isobmffReader.readU32();for(let c=0;c0){if(d===1)this.isobmffReader.pos+=4*4;else if(d===2){this.isobmffReader.pos+=4,m=this.isobmffReader.readF64(),f=this.isobmffReader.readU32(),this.isobmffReader.pos+=4;let g=this.isobmffReader.readU32(),b=this.isobmffReader.readU32(),p=this.isobmffReader.readU32(),k=this.isobmffReader.readU32()}}n.info.numberOfChannels=f,n.info.sampleRate=m,this.readContiguousBoxes(e+u.totalSize-this.isobmffReader.pos)}}}break;case"avcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"hvcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"colr":{let n=this.currentTrack;if(l(n&&n.info?.type==="video"),this.isobmffReader.readAscii(4)!=="nclx")break;let o=this.isobmffReader.readU16(),c=this.isobmffReader.readU16(),u=this.isobmffReader.readU16(),d=!!(this.isobmffReader.readU8()&128);n.info.colorSpace={primaries:Ut[o],transfer:Bt[c],matrix:Nt[u],fullRange:d}}break;case"wave":r.totalSize>8&&this.readContiguousBoxes(r.contentSize);break;case"esds":{let n=this.currentTrack;l(n&&n.info),this.isobmffReader.pos+=4;let s=this.isobmffReader.readU8();l(s===3),this.isobmffReader.readIsomVariableInteger(),this.isobmffReader.pos+=2;let o=this.isobmffReader.readU8(),c=(o&128)!==0,u=(o&64)!==0,d=(o&32)!==0;if(c&&(this.isobmffReader.pos+=2),u){let p=this.isobmffReader.readU8();this.isobmffReader.pos+=p}d&&(this.isobmffReader.pos+=2);let f=this.isobmffReader.readU8();l(f===4),this.isobmffReader.readIsomVariableInteger();let m=this.isobmffReader.readU8();l(m===64),this.isobmffReader.pos+=12;let g=this.isobmffReader.readU8();l(g===5);let b=this.isobmffReader.readIsomVariableInteger();n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+b)}break;case"stts":{let n=this.currentTrack;if(l(n),!n.sampleTable)break;this.isobmffReader.pos+=4;let s=this.isobmffReader.readU32(),o=0,c=0;for(let u=0;ux.id===s);if(!o)break;o.fragmentLookupTable=[];let c=this.isobmffReader.readU32(),u=(c&48)>>4,d=(c&12)>>2,f=c&3,m=this.isobmffReader,g=[m.readU8.bind(m),m.readU16.bind(m),m.readU24.bind(m),m.readU32.bind(m)],b=g[u],p=g[d],k=g[f],T=this.isobmffReader.readU32();for(let x=0;xs.moofOffset);this.fragments.splice(n+1,0,this.currentFragment);for(let[,s]of this.currentFragment.trackData){let o=s.samples[0],c=F(s.samples);this.currentFragment.dataStart=Math.min(this.currentFragment.dataStart,o.byteOffset),this.currentFragment.dataEnd=Math.max(this.currentFragment.dataEnd,c.byteOffset+c.byteSize)}this.currentFragment=null}break;case"traf":if(l(this.currentFragment),this.readContiguousBoxes(r.contentSize),this.currentTrack){let n=this.currentFragment.trackData.get(this.currentTrack.id);if(n){let s=E(this.currentTrack.fragments,this.currentFragment.moofOffset,c=>c.moofOffset);this.currentTrack.fragments.splice(s+1,0,this.currentFragment);let{currentFragmentState:o}=this.currentTrack;l(o),o.startTimestamp!==null&&(Tr(n,o.startTimestamp),n.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{l(this.currentFragment),this.isobmffReader.pos+=1;let n=this.isobmffReader.readU24(),s=!!(n&1),o=!!(n&2),c=!!(n&8),u=!!(n&16),d=!!(n&32),f=!!(n&65536),m=!!(n&131072),g=this.isobmffReader.readU32(),b=this.tracks.find(k=>k.id===g);if(!b)break;let p=this.fragmentTrackDefaults.find(k=>k.trackId===g);this.currentTrack=b,b.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:p?.defaultSampleDescriptionIndex??null,defaultSampleDuration:p?.defaultSampleDuration??null,defaultSampleSize:p?.defaultSampleSize??null,defaultSampleFlags:p?.defaultSampleFlags??null,startTimestamp:null},s?b.currentFragmentState.baseDataOffset=this.isobmffReader.readU64():m&&(b.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),o&&(b.currentFragmentState.sampleDescriptionIndex=this.isobmffReader.readU32()),c&&(b.currentFragmentState.defaultSampleDuration=this.isobmffReader.readU32()),u&&(b.currentFragmentState.defaultSampleSize=this.isobmffReader.readU32()),d&&(b.currentFragmentState.defaultSampleFlags=this.isobmffReader.readU32()),f&&(b.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let n=this.currentTrack;if(!n)break;l(n.currentFragmentState);let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=s===0?this.isobmffReader.readU32():this.isobmffReader.readU64();n.currentFragmentState.startTimestamp=o}break;case"trun":{let n=this.currentTrack;if(!n)break;if(l(this.currentFragment),l(n.currentFragmentState),this.currentFragment.trackData.has(n.id))throw new Error("Can't have two trun boxes for the same track in one fragment.");let s=this.isobmffReader.readU8(),o=this.isobmffReader.readU24(),c=!!(o&1),u=!!(o&4),d=!!(o&256),f=!!(o&512),m=!!(o&1024),g=!!(o&2048),b=this.isobmffReader.readU32(),p=n.currentFragmentState.baseDataOffset;c&&(p+=this.isobmffReader.readI32());let k=null;u&&(k=this.isobmffReader.readU32());let T=p;if(b===0){this.currentFragment.implicitBaseDataOffset=T;break}let x=0,C={startTimestamp:0,endTimestamp:0,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(n.id,C);for(let I=0;I({presentationTimestamp:I.presentationTimestamp,sampleIndex:R})).sort((I,R)=>I.presentationTimestamp-R.presentationTimestamp);let O=C.samples[C.presentationTimestamps[0].sampleIndex],_=C.samples[F(C.presentationTimestamps).sampleIndex];C.startTimestamp=O.presentationTimestamp,C.endTimestamp=_.presentationTimestamp+_.duration,this.currentFragment.implicitBaseDataOffset=T}break}this.isobmffReader.pos=a}},pt=class{constructor(t){this.internalTrack=t;this.chunkToSampleIndex=new WeakMap;this.chunkToFragmentLocation=new WeakMap}getCodec(){throw new Error("Not implemented on base class.")}async computeDuration(){let e=(await this.getChunk(1/0,{metadataOnly:!0}))?.timestamp;return e?e/1e6:0}async getFirstChunk(t){return this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(()=>{let e=this.internalTrack.fragments[0];return{fragmentIndex:e?0:-1,sampleIndex:e?0:-1,correctSampleFound:!!e}},0,1/0,t):this.fetchChunkForSampleIndex(0,t)}roundToMicrosecond(t){return(Math.floor(t*1e6)+.99999999)/1e6}async getChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findSampleInFragmentsForTimestamp(r),r,r,e);{let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=gr(a,r);return this.fetchChunkForSampleIndex(n,e)}}async getNextChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let a=this.chunkToFragmentLocation.get(t);if(a===void 0)throw new Error("Chunk was not created from this track.");let n=a.fragment.trackData.get(this.internalTrack.id),s=n.samples[a.sampleIndex],o=K(this.internalTrack.fragments,a.fragment.moofOffset,c=>c.moofOffset);return l(o!==-1),this.performFragmentedLookup(()=>{if(a.sampleIndex+1f.moofOffset);return l(d!==-1),{fragmentIndex:d,sampleIndex:0,correctSampleFound:!0}}return{fragmentIndex:o,sampleIndex:-1,correctSampleFound:!1}}},s.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");return this.fetchChunkForSampleIndex(r+1,e)}async getKeyChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findKeySampleInFragmentsForTimestamp(r),r,r,e);let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=gr(a,r),s=n===-1?-1:Bi(a,n);return this.fetchChunkForSampleIndex(s,e)}async getNextKeyChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let s=this.chunkToFragmentLocation.get(t);if(s===void 0)throw new Error("Chunk was not created from this track.");let o=s.fragment.trackData.get(this.internalTrack.id),c=o.samples[s.sampleIndex],u=K(this.internalTrack.fragments,s.fragment.moofOffset,d=>d.moofOffset);return l(u!==-1),this.performFragmentedLookup(()=>{let d=o.samples.findIndex((f,m)=>f.isKeyFrame&&m>s.sampleIndex);if(d!==-1)return{fragmentIndex:u,sampleIndex:d,correctSampleFound:!0};{let f=s.fragment;for(;f.nextFragment;){f=f.nextFragment;let m=f.trackData.get(this.internalTrack.id);if(m){let g=K(this.internalTrack.fragments,f.moofOffset,p=>p.moofOffset);l(g!==-1);let b=m.samples.findIndex(p=>p.isKeyFrame);if(b===-1)throw new Error("Not supported: Fragment does not contain key sample.");return{fragmentIndex:g,sampleIndex:b,correctSampleFound:!0}}}return{fragmentIndex:u,sampleIndex:-1,correctSampleFound:!1}}},c.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Ni(a,r);return this.fetchChunkForSampleIndex(n,e)}async fetchChunkForSampleIndex(t,e){if(t===-1)return null;let r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Ui(r,t);if(!a)return null;let n;e.metadataOnly?n=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(a.chunkOffset,a.chunkOffset+a.chunkSize),n=this.internalTrack.demuxer.chunkReader.readRange(a.sampleOffset,a.sampleOffset+a.sampleSize));let s=1e6*a.presentationTimestamp/this.internalTrack.timescale,o=1e6*a.duration/this.internalTrack.timescale,c=this.createChunk(n,s,o,a.isKeyFrame);return this.chunkToSampleIndex.set(c,t),c}async fetchChunkInFragment(t,e,r){if(e===-1)return null;let n=t.trackData.get(this.internalTrack.id).samples[e];l(n);let s;r.metadataOnly?s=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(t.dataStart,t.dataEnd),s=this.internalTrack.demuxer.chunkReader.readRange(n.byteOffset,n.byteOffset+n.byteSize));let o=1e6*n.presentationTimestamp/this.internalTrack.timescale,c=1e6*n.duration/this.internalTrack.timescale,u=this.createChunk(s,o,c,n.isKeyFrame);return this.chunkToFragmentLocation.set(u,{fragment:t,sampleIndex:e}),u}findSampleInFragmentsForTimestamp(t){let e=E(this.internalTrack.fragments,t,n=>n.trackData.get(this.internalTrack.id).startTimestamp),r=-1,a=!1;if(e!==-1){let s=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=E(s.presentationTimestamps,t,c=>c.presentationTimestamp);l(o!==-1),r=s.presentationTimestamps[o].sampleIndex,a=tn.trackData.get(this.internalTrack.id).startTimestamp),r=-1,a=!1;if(e!==-1){let s=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=Qt(s.presentationTimestamps,u=>s.samples[u.sampleIndex].isKeyFrame&&u.presentationTimestamp<=t);if(o===-1)throw new Error("Not supported: Fragment does not begin with a key sample.");r=s.presentationTimestamps[o].sampleIndex,a=tT.timestamp);k!==-1&&(p=this.internalTrack.fragmentLookupTable[k])}if(o===-1)d.pos=p?.moofOffset??0;else{let k=this.internalTrack.fragments[o];!p||k.moofOffset>=k.moofOffset?(d.pos=k.moofOffset+k.moofSize,m=k):d.pos=p.moofOffset}for(;d.posr)break;if(m.nextFragment){d.pos=m.nextFragment.moofOffset+m.nextFragment.moofSize,m=m.nextFragment;continue}}await d.reader.loadRange(d.pos,d.pos+16);let k=d.pos,T=d.readBoxHeader();if(T.name==="moof"){let x=K(n.fragments,k,C=>C.moofOffset);if(x===-1){d.pos=k;let C=await n.readFragment();m&&(m.nextFragment=C),m=C;let{fragmentIndex:O,sampleIndex:_,correctSampleFound:I}=t();if(I){let R=this.internalTrack.fragments[O];return this.fetchChunkInFragment(R,_,a)}O!==-1&&(g=O,b=_)}else{let C=n.fragments[x];m&&(m.nextFragment=C),m=C}}d.pos=k+T.totalSize}if(g!==-1){let k=this.internalTrack.fragments[g];return this.fetchChunkInFragment(k,b,a)}return null}finally{s()}}},Mt=class extends pt{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getCodedWidth(){return this.internalTrack.info.width}async getCodedHeight(){return this.internalTrack.info.height}async getRotation(){return this.internalTrack.rotation}async getDecoderConfig(){return{codec:ur(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}}createChunk(t,e,r,a){return new EncodedVideoChunk({data:t,timestamp:e,duration:r,type:a?"key":"delta"})}},Dt=class extends pt{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}async getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return{codec:lr(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}}createChunk(t,e,r,a){return new EncodedAudioChunk({data:t,timestamp:e,duration:r,type:a?"key":"delta"})}},gr=(i,t)=>{let e=E(i.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:i.presentationTimestamps[e].sampleIndex},Ui=(i,t)=>{let e=E(i.sampleTimingEntries,t,p=>p.startIndex),r=i.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,s=E(i.sampleCompositionTimeOffsets,t,p=>p.startIndex),o=i.sampleCompositionTimeOffsets[s];o&&(n+=o.offset);let c=i.sampleSizes[Math.min(t,i.sampleSizes.length-1)],u=E(i.sampleToChunk,t,p=>p.startSampleIndex),d=i.sampleToChunk[u];l(d);let f=d.startChunkIndex+Math.floor((t-d.startSampleIndex)/d.samplesPerChunk),m=i.chunkOffsets[f],g=0,b=m;if(i.sampleSizes.length===1)b+=c*(t-d.startSampleIndex),g+=c*d.samplesPerChunk;else{let p=d.startSampleIndex+(f-d.startChunkIndex)*d.samplesPerChunk;for(let k=p;kp)!==-1:!0}},Bi=(i,t)=>{if(!i.keySampleIndices)return t;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e]??-1},Ni=(i,t)=>{if(!i.keySampleIndices)return t+1;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e+1]??-1},Tr=(i,t)=>{i.startTimestamp+=t,i.endTimestamp+=t;for(let e of i.samples)e.presentationTimestamp+=t;for(let e of i.presentationTimestamps)e.presentationTimestamp+=t};var Z=class{},Re=class extends Z{async _canReadInput(t){if(await t._mainReader.source._getSize()<8)return!1;let r=new de(t._mainReader);return r.pos=4,r.readAscii(4)==="ftyp"}_createDemuxer(t){return new ht(t)}},Oe=class extends Z{async _canReadInput(){return!1}_createDemuxer(){throw new Error("Not implemented")}},Fe=new Re,xr=Fe,Cr=Fe,bt=new Oe,Pt=bt,wr=bt,yr=[Fe,Pt];var kt=class{constructor(t){this._demuxerPromise=null;this._format=null;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!Array.isArray(t.formats)||t.formats.some(e=>!(e instanceof Z)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(t.source instanceof j))throw new TypeError("options.source must be a Source.");this._formats=t.formats,this._source=t.source,this._mainReader=new ke(t.source)}_getDemuxer(){return this._demuxerPromise??=(async()=>{await this._mainReader.loadRange(0,4096);for(let t of this._formats)if(await t._canReadInput(this))return this._format=t,t._createDemuxer(this);throw new Error("Input has an unrecognizable format.")})()}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async computeDuration(){return(await this._getDemuxer()).computeDuration()}async getTracks(){return(await this._getDemuxer()).getTracks()}async getVideoTracks(){return(await this.getTracks()).filter(e=>e.isVideoTrack())}async getPrimaryVideoTrack(){return(await this.getTracks()).find(e=>e.isVideoTrack())??null}async getAudioTracks(){return(await this.getTracks()).filter(e=>e.isAudioTrack())}async getPrimaryAudioTrack(){return(await this.getTracks()).find(e=>e.isAudioTrack())??null}async getMimeType(){return(await this._getDemuxer()).getMimeType()}};var $=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.metadataOnly!==void 0&&typeof i.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.")},N=i=>{if(typeof i!="number"||Number.isNaN(i))throw new TypeError("timestamp must be a number.")},ge=class{async*chunks(t,e=1/0){let r=[],{promise:a,resolve:n}=M(),{promise:s,resolve:o}=M(),c=!1,u=null,d=[],f=()=>Math.max(2,d.length);(async()=>{let m=t??await this.getFirstChunk();for(;m&&!c&&!(m.timestamp/1e6>=e);){if(r.length>f()){({promise:s,resolve:o}=M()),await s;continue}r.push(m),n(),{promise:a,resolve:n}=M(),m=await this.getNextChunk(m)}c=!0,n()})().catch(m=>{u||(u=m,n())});try{for(;;){if(u)throw u;if(r.length>0){yield r.shift();let m=performance.now();for(d.push(m);d.length>0&&m-d[0]>=1e3;)d.shift();o()}else if(!c)await a;else break}}finally{c=!0,o()}}},Te=class{_duplicateFrame(t){return structuredClone(t)}async*mediaFramesAtTimestamps(t){Kt(t);let e=$t(t),r=[],a=8,n=[],{promise:s,resolve:o}=M(),{promise:c,resolve:u}=M(),d=!1,f=!1,m=null,g=null,b=T=>{n.push(T),o(),{promise:s,resolve:o}=M()},p=new Error,k=await this._createDecoder(T=>{if(u(),f){T.close();return}let x=!1;for(;r.length>0&&r[0]===T.timestamp;)b(this._duplicateFrame(T)),r.shift(),x=!0;x?(g?.close(),g=T):T.close()},T=>{m||(T.stack=p.stack,m=T,o())});(async()=>{let T=this._createChunkDrain(),x=null,C=null;for await(let O of e){for(N(O);n.length+k.decodeQueueSize>a;)({promise:c,resolve:u}=M()),await c;if(f)break;let _=await T.getChunk(O);if(!_){b(null);continue}let I=await T.getKeyChunk(O);if(!I){b(null);continue}for(r.push(_.timestamp),x&&I.timestamp===x.timestamp&&_.timestamp>=C.timestamp?(l(C),_.timestamp===C.timestamp&&r.length===1&&(g&&b(this._duplicateFrame(g)),r.shift())):(x=I,C=I,k.decode(I));C.timestamp!==_.timestamp;){let R=await T.getNextChunk(C);l(R),C=R,k.decode(R)}k.decodeQueueSize>=10&&await new Promise(R=>k.addEventListener("dequeue",R,{once:!0}))}await k.flush(),k.close(),d=!0,o()})().catch(T=>{m||(m=T,o())});try{for(;;){if(m)throw m;if(n.length>0){let T=n.shift();l(T!==void 0),yield T,u()}else if(!d)await s;else break}}finally{f=!0,u();for(let T of n)T?.close();g?.close()}}async*mediaFramesInRange(t=0,e=1/0){N(t),N(e);let r=8,a=[],n=!1,s=null,{promise:o,resolve:c}=M(),{promise:u,resolve:d}=M(),f=!1,m=!1,g=null,b=new Error,p=await this._createDecoder(x=>{d();let C=x.timestamp/1e6;if(C>=e&&(m=!0),m){x.close();return}s&&(C>t?(a.push(s),n=!0):s.close()),C>=t&&(a.push(x),n=!0),s=n?null:x,a.length>0&&(c(),{promise:o,resolve:c}=M())},x=>{g||(x.stack=b.stack,g=x,c())}),k=this._createChunkDrain(),T=await k.getKeyChunk(t)??await k.getFirstChunk();if(T){(async()=>{let x=T,C=1/0;if(e<1/0){let _=await k.getChunk(e),I=_?_.type==="key"&&_.timestamp/1e6===e?_:await k.getNextKeyChunk(_):null;I&&(C=I.timestamp/1e6)}let O=k.chunks(T,C);for(await O.next();x&&!m;){if(a.length+p.decodeQueueSize>r){({promise:u,resolve:d}=M()),await u;continue}p.decode(x);let _=await O.next();if(_.done)break;x=_.value}await O.return(),await p.flush(),p.close(),!n&&s&&a.push(s),f=!0,c()})().catch(x=>{g||(g=x,c())});try{for(;;){if(g)throw g;if(a.length>0)yield a.shift(),d();else if(!f)await o;else break}}finally{m=!0,d();for(let x of a)x.close()}}}},Ve=class extends ge{constructor(t){if(!(t instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._videoTrack=t}getFirstChunk(t={}){return $(t),this._videoTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return N(t),$(e),this._videoTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return $(e),this._videoTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return N(t),$(e),this._videoTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return $(e),this._videoTrack._backing.getNextKeyChunk(t,e)}},Me=class extends Te{constructor(e){if(!(e instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");super();this._decoderConfig=null;this._videoTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._videoTrack.getDecoderConfig();let a=new VideoDecoder({output:e,error:r});return a.configure(this._decoderConfig),a}_createChunkDrain(){return new Ve(this._videoTrack)}async getFrame(e){N(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}frames(e=0,r=1/0){return this.mediaFramesInRange(e,r)}framesAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},gt=class{constructor(t,e){if(!(t instanceof U))throw new TypeError("videoTrack must be an InputVideoTrack.");if(e&&typeof e!="object")throw new TypeError("dimensions, when defined, must be an object.");if(e&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("dimensions.width must be a positive integer.");if(e&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("dimensions.height must be a positive integer.");this._videoTrack=t,this._dimensions=e,this._videoFrameDrain=new Me(t)}async _videoFrameToWrappedCanvas(t){let e=this._dimensions?.width??await this._videoTrack.getDisplayWidth(),r=this._dimensions?.height??await this._videoTrack.getDisplayHeight(),a=await this._videoTrack.getRotation(),n=document.createElement("canvas");n.width=e,n.height=r;let s=n.getContext("2d",{alpha:!1});l(s),s.translate(e/2,r/2),s.rotate(a*Math.PI/180),s.translate(-e/2,-r/2);let[o,c]=a%180===0?[e,r]:[r,e];s.drawImage(t,(e-o)/2,(r-c)/2,o,c);let u={canvas:n,timestamp:t.timestamp/1e6,duration:(t.duration??0)/1e6};return t.close(),u}async getCanvas(t){N(t);let e=await this._videoFrameDrain.getFrame(t);return e&&this._videoFrameToWrappedCanvas(e)}async*canvases(t=0,e=1/0){for await(let r of this._videoFrameDrain.frames(t,e))yield this._videoFrameToWrappedCanvas(r)}async*canvasesAtTimestamps(t){for await(let e of this._videoFrameDrain.framesAtTimestamps(t))yield e&&this._videoFrameToWrappedCanvas(e)}},De=class extends ge{constructor(t){if(!(t instanceof B))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._audioTrack=t}getFirstChunk(t={}){return $(t),this._audioTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return 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14496-15.");if((i.decoderConfig.codec.startsWith("hev1")||i.decoderConfig.codec.startsWith("hvc1"))&&!i.decoderConfig.description)throw new TypeError("Video chunk metadata decoder configuration for HEVC must include a description, which is expected to be an HEVCDecoderConfigurationRecord as specified in ISO 14496-15.");if((i.decoderConfig.codec==="vp8"||i.decoderConfig.codec.startsWith("vp09"))&&i.decoderConfig.colorSpace===void 0)throw new TypeError("Video chunk metadata decoder configuration for VP8/VP9 must include a colorSpace.")},Ne=i=>{if(!i)throw new TypeError("Audio chunk metadata must be provided.");if(typeof i!="object")throw new TypeError("Audio chunk metadata must be an object.");if(!i.decoderConfig)throw new TypeError("Audio chunk metadata must include a decoder configuration.");if(typeof i.decoderConfig!="object")throw new TypeError("Audio chunk metadata decoder configuration must be an object.");if(typeof i.decoderConfig.codec!="string")throw new TypeError("Audio chunk 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ke(this.auxWriter);this.ftypSize=null;this.mdat=null;this.trackDatas=[];this.creationTime=Math.floor(Date.now()/1e3)+xi;this.finalizedChunks=[];this.nextFragmentNumber=1;this.writer=e._writer,this.boxWriter=new ke(this.writer);let s=this.writer instanceof ce?"in-memory":!1;this.fastStart=r._options.fastStart??s,(this.fastStart==="in-memory"||this.fastStart==="fragmented")&&(this.writer.ensureMonotonicity=!0)}async start(){let e=await this.mutex.acquire(),r=this.output._tracks.some(s=>s.type==="video"&&s.source._codec==="avc");this.boxWriter.writeBox(Xt({holdsAvc:r,fragmented:this.fastStart==="fragmented"})),this.ftypSize=this.writer.getPos(),this.fastStart==="in-memory"?this.mdat=De(!1):this.fastStart==="fragmented"||(this.mdat=De(!0),this.boxWriter.writeBox(this.mdat)),await this.writer.flush(),e()}getVideoTrackData(e,r){let s=this.trackDatas.find(a=>a.track===e);if(s)return s;Be(r),l(r),l(r.decoderConfig),l(r.decoderConfig.codedWidth!==void 0),l(r.decoderConfig.codedHeight!==void 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this.trackDatas.push(n),this.trackDatas.sort((a,o)=>a.track.id-o.track.id),n}getSubtitleTrackData(e,r){let s=this.trackDatas.find(a=>a.track===e);if(s)return s;We(r),l(r),l(r.config);let n={track:e,type:"subtitle",info:{config:r.config},timescale:1e3,samples:[],sampleQueue:[],timestampProcessingQueue:[],timeToSampleTable:[],compositionTimeOffsetTable:[],lastTimescaleUnits:null,lastSample:null,finalizedChunks:[],currentChunk:null,compactlyCodedChunkTable:[],lastCueEndTimestamp:0,cueQueue:[],nextSourceId:0,cueToSourceId:new WeakMap};return this.trackDatas.push(n),this.trackDatas.sort((a,o)=>a.track.id-o.track.id),this.validateAndNormalizeTimestamp(e,0,!0),n}async addEncodedVideoChunk(e,r,s){let n=await this.mutex.acquire();try{let a=this.getVideoTrackData(e,s),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=this.validateAndNormalizeTimestamp(a.track,r.timestamp,r.type==="key"),u=this.createSampleForTrack(a,o,c,(r.duration??0)/1e6,r.type);await this.registerSample(a,u)}finally{n()}}async addEncodedAudioChunk(e,r,s){let n=await this.mutex.acquire();try{let a=this.getAudioTrackData(e,s),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type,u=this.validateAndNormalizeTimestamp(a.track,r.timestamp,c==="key"),d=this.createSampleForTrack(a,o,u,(r.duration??0)/1e6,c);await this.registerSample(a,d)}finally{n()}}async addSubtitleCue(e,r,s){let n=await this.mutex.acquire();try{let a=this.getSubtitleTrackData(e,s);this.validateAndNormalizeTimestamp(a.track,1e6*r.timestamp,!0),e.source._codec==="webvtt"&&(a.cueQueue.push(r),await this.processWebVTTCues(a,r.timestamp))}finally{n()}}async processWebVTTCues(e,r){for(;e.cueQueue.length>0;){let s=new Set([]);for(let d of e.cueQueue)l(d.timestamp<=r),l(e.lastCueEndTimestamp<=d.timestamp+d.duration),s.add(Math.max(d.timestamp,e.lastCueEndTimestamp)),s.add(d.timestamp+d.duration);let n=[...s].sort((d,f)=>d-f),a=n[0],o=n[1]??a;if(r=o)break;ae.lastIndex=0;let m=ae.test(f.text),g=f.timestamp+f.duration,b=e.cueToSourceId.get(f);if(b===void 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c=ut(r,s);this.boxWriter.writeBox(c),this.writer.seek(o);for(let u of s)u.finalizedChunks.push(u.currentChunk),this.finalizedChunks.push(u.currentChunk),u.currentChunk=null;e&&await this.writer.flush()}async onTrackClose(e){let r=await this.mutex.acquire();if(e.type==="subtitle"&&e.source._codec==="webvtt"){let s=this.trackDatas.find(n=>n.track===e);s&&await this.processWebVTTCues(s,1/0)}this.fastStart==="fragmented"&&await this.interleaveSamples(),r()}async finalize(){let e=await this.mutex.acquire();for(let r of this.trackDatas)r.type==="subtitle"&&r.track.source._codec==="webvtt"&&await this.processWebVTTCues(r,1/0);if(this.fastStart==="fragmented"){for(let r of this.trackDatas){for(let s of r.sampleQueue)await this.addSampleToTrack(r,s);this.processTimestamps(r)}await this.finalizeFragment(!1)}else for(let r of this.trackDatas)this.processTimestamps(r),await this.finalizeCurrentChunk(r);if(this.fastStart==="in-memory"){l(this.mdat);let r;for(let n=0;n<2;n++){let 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r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:fr},{id:22337,data:fr},this.format._options.streamable?null:e]};this.segmentInfo=r}createTracks(){let e={id:374648427,data:[]};this.tracksElement=e;for(let r of this.trackDatas)e.data.push({id:174,data:[{id:215,data:r.track.id},{id:29637,data:r.track.id},{id:131,data:wi[r.type]},{id:134,data:Ci[r.track.source._codec]},r.type==="video"?this.videoSpecificTrackInfo(r):null,r.type==="audio"?this.audioSpecificTrackInfo(r):null,r.type==="subtitle"?this.subtitleSpecificTrackInfo(r):null]})}videoSpecificTrackInfo(e){let r=[e.info.decoderConfig.description?{id:25506,data:Y(e.info.decoderConfig.description)}:null,e.track.metadata.frameRate?{id:2352003,data:1e9/e.track.metadata.frameRate}:null],s=e.info.decoderConfig.colorSpace,n={id:224,data:[{id:176,data:e.info.width},{id:186,data:e.info.height},Re(s)?{id:21936,data:[{id:21937,data:ee[s.matrix]},{id:21946,data:J[s.transfer]},{id:21947,data:Z[s.primaries]},{id:21945,data:s.fullRange?2:1}]}:null]};return r.push(n),r}audioSpecificTrackInfo(e){return[e.info.decoderConfig.description?{id:25506,data:Y(e.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new Ce(e.info.sampleRate)},{id:159,data:e.info.numberOfChannels}]}]}subtitleSpecificTrackInfo(e){return[{id:25506,data:P.encode(e.info.config.description)}]}createSegment(){let 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metadata decoder configuration must specify a codec string.");if(!Number.isInteger(i.decoderConfig.sampleRate)||i.decoderConfig.sampleRate<=0)throw new TypeError("Audio chunk metadata decoder configuration must specify a valid sampleRate (positive integer).");if(!Number.isInteger(i.decoderConfig.numberOfChannels)||i.decoderConfig.numberOfChannels<=0)throw new TypeError("Audio chunk metadata decoder configuration must specify a valid numberOfChannels (positive integer).");if(i.decoderConfig.description!==void 0&&!it(i.decoderConfig.description))throw new TypeError("Audio chunk metadata decoder configuration description, when defined, must be an ArrayBuffer or an ArrayBuffer view.");if(i.decoderConfig.codec.startsWith("mp4a")&&!i.decoderConfig.description)throw new TypeError("Audio chunk metadata decoder configuration for AAC must include a description, which is expected to be an AudioSpecificConfig as specified in ISO 14496-3.");if(i.decoderConfig.codec==="opus"&&i.decoderConfig.description&&i.decoderConfig.description.byteLength<18)throw new TypeError("Invalid decoder description provided for Opus; must be at least 18 bytes long.")},We=i=>{if(!i)throw new TypeError("Subtitle metadata must be provided.");if(typeof i!="object")throw new TypeError("Subtitle metadata must be an object.");if(!i.config)throw new TypeError("Subtitle metadata must include a config object.");if(typeof i.config!="object")throw new TypeError("Subtitle metadata config must be an object.");if(typeof i.config.description!="string")throw new TypeError("Subtitle metadata config description must be a string.")};var Me=1e3,xi=2082844800,z=(i,t,e=!0)=>{let r=i*t;return e?Math.round(r):r},He=class extends oe{constructor(e,r){super(e);this.timestampsMustStartAtZero=!0;this.auxTarget=new xe;this.auxWriter=this.auxTarget._createWriter();this.auxBoxWriter=new ke(this.auxWriter);this.ftypSize=null;this.mdat=null;this.trackDatas=[];this.creationTime=Math.floor(Date.now()/1e3)+xi;this.finalizedChunks=[];this.nextFragmentNumber=1;this.writer=e._writer,this.boxWriter=new ke(this.writer);let a=this.writer instanceof ce?"in-memory":!1;this.fastStart=r._options.fastStart??a,(this.fastStart==="in-memory"||this.fastStart==="fragmented")&&(this.writer.ensureMonotonicity=!0)}async start(){let e=await this.mutex.acquire(),r=this.output._tracks.some(a=>a.type==="video"&&a.source._codec==="avc");this.boxWriter.writeBox(Xt({holdsAvc:r,fragmented:this.fastStart==="fragmented"})),this.ftypSize=this.writer.getPos(),this.fastStart==="in-memory"?this.mdat=De(!1):this.fastStart==="fragmented"||(this.mdat=De(!0),this.boxWriter.writeBox(this.mdat)),await this.writer.flush(),e()}getVideoTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Be(r),l(r),l(r.decoderConfig),l(r.decoderConfig.codedWidth!==void 0),l(r.decoderConfig.codedHeight!==void 0);let n={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},timescale:e.metadata.frameRate??57600,samples:[],sampleQueue:[],timestampProcessingQueue:[],timeToSampleTable:[],compositionTimeOffsetTable:[],lastTimescaleUnits:null,lastSample:null,finalizedChunks:[],currentChunk:null,compactlyCodedChunkTable:[]};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getAudioTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Ne(r),l(r),l(r.decoderConfig);let n={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},timescale:r.decoderConfig.sampleRate,samples:[],sampleQueue:[],timestampProcessingQueue:[],timeToSampleTable:[],compositionTimeOffsetTable:[],lastTimescaleUnits:null,lastSample:null,finalizedChunks:[],currentChunk:null,compactlyCodedChunkTable:[]};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getSubtitleTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;We(r),l(r),l(r.config);let n={track:e,type:"subtitle",info:{config:r.config},timescale:1e3,samples:[],sampleQueue:[],timestampProcessingQueue:[],timeToSampleTable:[],compositionTimeOffsetTable:[],lastTimescaleUnits:null,lastSample:null,finalizedChunks:[],currentChunk:null,compactlyCodedChunkTable:[],lastCueEndTimestamp:0,cueQueue:[],nextSourceId:0,cueToSourceId:new WeakMap};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),this.validateAndNormalizeTimestamp(e,0,!0),n}async addEncodedVideoChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=this.validateAndNormalizeTimestamp(s.track,r.timestamp,r.type==="key"),u=this.createSampleForTrack(s,o,c,(r.duration??0)/1e6,r.type);await this.registerSample(s,u)}finally{n()}}async addEncodedAudioChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type,u=this.validateAndNormalizeTimestamp(s.track,r.timestamp,c==="key"),d=this.createSampleForTrack(s,o,u,(r.duration??0)/1e6,c);await this.registerSample(s,d)}finally{n()}}async addSubtitleCue(e,r,a){let n=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,a);this.validateAndNormalizeTimestamp(s.track,1e6*r.timestamp,!0),e.source._codec==="webvtt"&&(s.cueQueue.push(r),await this.processWebVTTCues(s,r.timestamp))}finally{n()}}async processWebVTTCues(e,r){for(;e.cueQueue.length>0;){let a=new Set([]);for(let d of e.cueQueue)l(d.timestamp<=r),l(e.lastCueEndTimestamp<=d.timestamp+d.duration),a.add(Math.max(d.timestamp,e.lastCueEndTimestamp)),a.add(d.timestamp+d.duration);let n=[...a].sort((d,f)=>d-f),s=n[0],o=n[1]??s;if(r=o)break;se.lastIndex=0;let m=se.test(f.text),g=f.timestamp+f.duration,b=e.cueToSourceId.get(f);if(b===void 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c=ut(r,a);this.boxWriter.writeBox(c),this.writer.seek(o);for(let u of a)u.finalizedChunks.push(u.currentChunk),this.finalizedChunks.push(u.currentChunk),u.currentChunk=null;e&&await this.writer.flush()}async onTrackClose(e){let r=await this.mutex.acquire();if(e.type==="subtitle"&&e.source._codec==="webvtt"){let a=this.trackDatas.find(n=>n.track===e);a&&await this.processWebVTTCues(a,1/0)}this.fastStart==="fragmented"&&await this.interleaveSamples(),r()}async finalize(){let e=await this.mutex.acquire();for(let r of this.trackDatas)r.type==="subtitle"&&r.track.source._codec==="webvtt"&&await this.processWebVTTCues(r,1/0);if(this.fastStart==="fragmented"){for(let r of this.trackDatas){for(let a of r.sampleQueue)await this.addSampleToTrack(r,a);this.processTimestamps(r)}await this.finalizeFragment(!1)}else for(let r of this.trackDatas)this.processTimestamps(r),await this.finalizeCurrentChunk(r);if(this.fastStart==="in-memory"){l(this.mdat);let r;for(let n=0;n<2;n++){let 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Switching to MKV removes this restriction.")}else if(e.type==="audio"){if(!["opus","vorbis"].includes(e.source._codec))throw new Error("WebM only supports Opus and Vorbis as audio codecs. Switching to MKV removes this restriction.")}else if(e.type==="subtitle"){if(e.source._codec!=="webvtt")throw new Error("WebM only supports WebVTT as subtitle codec. Switching to MKV removes this restriction.")}else throw new Error("WebM only supports video, audio and subtitle tracks. 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r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:fr},{id:22337,data:fr},this.format._options.streamable?null:e]};this.segmentInfo=r}createTracks(){let e={id:374648427,data:[]};this.tracksElement=e;for(let r of this.trackDatas)e.data.push({id:174,data:[{id:215,data:r.track.id},{id:29637,data:r.track.id},{id:131,data:wi[r.type]},{id:134,data:Ci[r.track.source._codec]},r.type==="video"?this.videoSpecificTrackInfo(r):null,r.type==="audio"?this.audioSpecificTrackInfo(r):null,r.type==="subtitle"?this.subtitleSpecificTrackInfo(r):null]})}videoSpecificTrackInfo(e){let r=[e.info.decoderConfig.description?{id:25506,data:Y(e.info.decoderConfig.description)}:null,e.track.metadata.frameRate?{id:2352003,data:1e9/e.track.metadata.frameRate}:null],a=e.info.decoderConfig.colorSpace,n={id:224,data:[{id:176,data:e.info.width},{id:186,data:e.info.height},Re(a)?{id:21936,data:[{id:21937,data:ee[a.matrix]},{id:21946,data:J[a.transfer]},{id:21947,data:Z[a.primaries]},{id:21945,data:a.fullRange?2:1}]}:null]};return r.push(n),r}audioSpecificTrackInfo(e){return[e.info.decoderConfig.description?{id:25506,data:Y(e.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new Ce(e.info.sampleRate)},{id:159,data:e.info.numberOfChannels}]}]}subtitleSpecificTrackInfo(e){return[{id:25506,data:P.encode(e.info.config.description)}]}createSegment(){let e={id:408125543,size:this.format._options.streamable?-1:hr,data:[this.format._options.streamable?null:this.seekHead,this.segmentInfo,this.tracksElement]};this.segment=e,this.writeEBML(e)}createCues(){this.cues={id:475249515,data:[]}}get segmentDataOffset(){return l(this.segment),this.dataOffsets.get(this.segment)}getVideoTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Be(r),l(r),l(r.decoderConfig),l(r.decoderConfig.codedWidth!==void 0),l(r.decoderConfig.codedHeight!==void 0);let n={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getAudioTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;Ne(r),l(r),l(r.decoderConfig);let n={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}getSubtitleTrackData(e,r){let a=this.trackDatas.find(s=>s.track===e);if(a)return a;We(r),l(r),l(r.config);let n={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(n),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),n}async addEncodedVideoChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type==="key",u=this.validateAndNormalizeTimestamp(s.track,r.timestamp,c),d=this.createInternalChunk(o,u,(r.duration??0)/1e6,r.type);e.source._codec==="vp9"&&this.fixVP9ColorSpace(s,d),s.chunkQueue.push(d),await this.interleaveChunks()}finally{n()}}async addEncodedAudioChunk(e,r,a){let n=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,a),o=new Uint8Array(r.byteLength);r.copyTo(o);let c=r.type,u=c==="key",d=this.validateAndNormalizeTimestamp(s.track,r.timestamp,u),f=this.createInternalChunk(o,d,(r.duration??0)/1e6,c);s.chunkQueue.push(f),await this.interleaveChunks()}finally{n()}}async addSubtitleCue(e,r,a){let n=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,a),o=this.validateAndNormalizeTimestamp(s.track,1e6*r.timestamp,!0),c=r.text,u=Math.floor(o*1e3);se.lastIndex=0,c=c.replace(se,g=>{let p=Fe(g.slice(1,-1))-u;return`<${Ve(p)}>`});let d=P.encode(c),f=`${r.settings??""} ${r.identifier??""} -${r.notes??""}`,m=this.createInternalChunk(d,o,r.duration,"key",f.trim()?P.encode(f):null);a.chunkQueue.push(m),await this.interleaveChunks()}finally{n()}}async interleaveChunks(){for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return;e:for(;;){let e=null,r=1/0;for(let n of this.trackDatas){if(n.chunkQueue.length===0&&!n.track.source._closed)break e;n.chunkQueue.length>0&&n.chunkQueue[0].timestamp=2&&s++;let u={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];Dt(r.data,s+0,s+3,u)}createInternalChunk(e,r,s,n,a=null){return{data:e,type:n,timestamp:r,duration:s,additions:a}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),n=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let m=f.chunkQueue[0];return m&&m.type==="key"});(!this.currentCluster||n&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let a=s-this.currentClusterMsTimestamp;if(a<0)return;if(a>=ht)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${ht} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${ht} milliseconds.`);let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,a,!1);let d=Math.floor(1e3*r.duration);if(d===0&&!r.additions){u.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[c,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new we(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,d>0?{id:155,data:d}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+d),e.lastWrittenMsTimestamp=s,this.trackDatasInCurrentCluster.add(e)}createNewCluster(e){this.currentCluster&&!this.format._options.streamable&&this.finalizeCurrentCluster(),this.currentCluster={id:524531317,size:this.format._options.streamable?-1:pr,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){l(this.currentCluster);let e=this.writer.getPos()-this.dataOffsets.get(this.currentCluster),r=this.writer.getPos();this.writer.seek(this.offsets.get(this.currentCluster)+4),this.writeEBMLVarInt(e,pr),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;l(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(n=>({id:183,data:[{id:247,data:n.track.id},{id:241,data:s}]}))]})}async onTrackClose(){let e=await this.mutex.acquire();await this.interleaveChunks(),e()}async finalize(){let e=await this.mutex.acquire();this.segment||(this.createTracks(),this.createSegment());for(let r of this.trackDatas)for(;r.chunkQueue.length>0;)this.writeBlock(r,r.chunkQueue.shift());if(!this.format._options.streamable&&this.currentCluster&&this.finalizeCurrentCluster(),l(this.cues),this.writeEBML(this.cues),!this.format._options.streamable){let r=this.writer.getPos(),s=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.offsets.get(this.segment)+4),this.writeEBMLVarInt(s,hr),this.segmentDuration.data=new le(this.duration),this.writer.seek(this.offsets.get(this.segmentDuration)),this.writeEBML(this.segmentDuration),this.seekHead.data[0].data[1].data=this.offsets.get(this.cues)-this.segmentDataOffset,this.seekHead.data[1].data[1].data=this.offsets.get(this.segmentInfo)-this.segmentDataOffset,this.seekHead.data[2].data[1].data=this.offsets.get(this.tracksElement)-this.segmentDataOffset,this.writer.seek(this.offsets.get(this.seekHead)),this.writeEBML(this.seekHead),this.writer.seek(r)}e()}};var ie=class{},pt=class extends ie{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(t.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=t}_createMuxer(t){return new He(t,this)}},Qe=class extends ie{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.streamable!==void 0&&typeof t.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=t}_createMuxer(t){return new Le(t,this)}},me=class extends Qe{};var fe=class{constructor(){this._connectedTrack=null;this._closed=!1;this._offsetTimestamps=!1}_ensureValidDigest(){if(!this._connectedTrack)throw new Error("Cannot call digest without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call digest before output has been started.");if(this._connectedTrack.output._finalizing)throw new Error("Cannot call digest after output has started finalizing.");if(this._closed)throw new Error("Cannot call digest after source has been closed.")}_start(){}async _flush(){}close(){if(this._closed)throw new Error("Source already closed.");if(!this._connectedTrack)throw new Error("Cannot call close without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call close before output has been started.");this._closed=!0,!this._connectedTrack.output._finalizing&&this._connectedTrack.output._muxer.onTrackClose(this._connectedTrack)}},$=class extends fe{constructor(e){super();this._connectedTrack=null;if(!ue.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${ue.join(", ")}.`);this._codec=e}},bt=class extends ${constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,t,e)}},yi=5,Si=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!ue.includes(i.codec))throw new TypeError(`Invalid video codec '${i.codec}'. Must be one of: ${ue.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.latencyMode!==void 0&&!["quality","realtime"].includes(i.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},ye=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;Si(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(t.codedWidth!==this.lastWidth||t.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${t.codedWidth}x${t.codedHeight}.`)}else this.lastWidth=t.codedWidth,this.lastHeight=t.codedHeight;this.ensureEncoder(t),l(this.encoder);let e=Math.floor(t.timestamp/1e6/yi);this.encoder.encode(t,{keyFrame:e!==this.lastMultipleOfKeyFrameInterval}),this.lastMultipleOfKeyFrameInterval=e,this.encoder.encodeQueueSize>=4&&await new Promise(r=>this.encoder.addEventListener("dequeue",r,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>void this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:ar(this.codecConfig.codec,t.codedWidth,t.codedHeight,this.codecConfig.bitrate),width:t.codedWidth,height:t.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...dr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},kt=class extends ${constructor(t){super(t.codec),this._encoder=new ye(this,t)}digest(t){if(!(t instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},gt=class extends ${constructor(t,e){if(!(t instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new ye(this,e),this._canvas=t}digest(t,e=0){if(!Number.isFinite(t)||t<0)throw new TypeError("timestamp must be a non-negative number.");if(!Number.isFinite(e)||e<0)throw new TypeError("duration must be a non-negative number.");let r=new VideoFrame(this._canvas,{timestamp:Math.round(1e6*t),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},Tt=class extends ${constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._offsetTimestamps=!0;this._encoder=new ye(this,r),this._track=e}_start(){this._abortController=new AbortController;let e=new MediaStreamTrackProcessor({track:this._track}),r=new WritableStream({write:s=>{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},K=class extends fe{constructor(e){super();this._connectedTrack=null;if(!de.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${de.join(", ")}.`);this._codec=e}},xt=class extends K{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,t,e)}},vi=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!de.includes(i.codec))throw new TypeError(`Invalid audio codec '${i.codec}'. Must be one of: ${de.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},Se=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;vi(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(t.numberOfChannels!==this.lastNumberOfChannels||t.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${t.numberOfChannels} channels at ${t.sampleRate} Hz.`)}else this.lastNumberOfChannels=t.numberOfChannels,this.lastSampleRate=t.sampleRate;this.ensureEncoder(t),l(this.encoder),this.encoder.encode(t),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>void this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:cr(this.codecConfig.codec,t.numberOfChannels,t.sampleRate),numberOfChannels:t.numberOfChannels,sampleRate:t.sampleRate,bitrate:this.codecConfig.bitrate,...lr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Ct=class extends K{constructor(t){super(t.codec),this._encoder=new Se(this,t)}digest(t){if(!(t instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},wt=class extends K{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new Se(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,n=e.length,a=new Float32Array(r*n);for(let u=0;u{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},he=class extends fe{constructor(e){super();this._connectedTrack=null;if(!Ue.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Ue.join(", ")}.`);this._codec=e}},St=class extends he{constructor(t){super(t),this._parser=new Oe({codec:t,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(t){if(typeof t!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(t),this._connectedTrack.output._muxer.mutex.currentPromise}};var vt=class{constructor(t){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new j;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.format instanceof ie))throw new TypeError("options.format must be an OutputFormat.");if(!(t.target instanceof re))throw new TypeError("options.target must be a Target.");if(t.target._output)throw new Error("Target is already used for another output.");t.target._output=this,this._writer=t.target._createWriter(),this._muxer=t.format._createMuxer(this)}addVideoTrack(t,e={}){if(!(t instanceof $))throw new TypeError("source must be a VideoSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");if(typeof e.rotation=="number"&&![0,90,180,270].includes(e.rotation))throw new TypeError(`Invalid video rotation: ${e.rotation}. Has to be 0, 90, 180 or 270.`);if(Array.isArray(e.rotation)&&(e.rotation.length!==9||e.rotation.some(r=>!Number.isFinite(r))))throw new TypeError(`Invalid video transformation matrix: ${e.rotation.join()}`);if(e.frameRate!==void 0&&(!Number.isInteger(e.frameRate)||e.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",t,e)}addAudioTrack(t,e={}){if(!(t instanceof K))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",t,e)}addSubtitleTrack(t,e={}){if(!(t instanceof he))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",t,e)}_addTrack(t,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let s={id:this._tracks.length+1,output:this,type:t,source:e,metadata:r};this._muxer.beforeTrackAdd(s),this._tracks.push(s),e._connectedTrack=s}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let t=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();t()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),t()}};var X=class{constructor(){this._sizePromise=null}_getSize(){return this._sizePromise??=this._retrieveSize()}},_t=class extends X{constructor(t){if(!(t instanceof ArrayBuffer)&&!(t instanceof Uint8Array))throw new TypeError("buffer must be an ArrayBuffer or Uint8Array.");super(),this._bytes=t instanceof Uint8Array?t:new Uint8Array(t)}async _read(t,e){return this._bytes.subarray(t,e)}async _retrieveSize(){return this._bytes.byteLength}},At=class extends X{constructor(t){if(!(t instanceof Blob))throw new TypeError("blob must be a Blob.");super(),this._blob=t}async _read(t,e){let s=await this._blob.slice(t,e).arrayBuffer();return new Uint8Array(s)}async _retrieveSize(){return this._blob.size}},It=class extends X{constructor(e,r={}){if(typeof e!="string")throw new TypeError("url must be a string.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.withCredentials!==void 0&&typeof r.withCredentials!="boolean")throw new TypeError("options.withCredentials, when specified, must be a boolean.");super();this._fullData=null;this._url=e,this._withCredentials=r.withCredentials??!1}_makeRequest(e){return new Promise((r,s)=>{let n=new XMLHttpRequest;n.open("GET",this._url,!0),n.responseType="arraybuffer",n.withCredentials=this._withCredentials,e&&n.setRequestHeader("Range",`bytes=${e.start}-${e.end-1}`),n.onload=()=>{if(n.status>=200&&n.status<300){let a=n.response;e||(this._fullData=a),r({response:a,statusCode:n.status})}else s(new Error(`Error fetching ${this._url}: ${n.status} ${n.statusText}`))},n.onerror=()=>{s(new Error("Network error occurred."))},n.ontimeout=()=>{s(new Error("Request timed out."))},n.send()})}async _read(e,r){if(this._fullData)return new Uint8Array(this._fullData,e,r-e);let{response:s,statusCode:n}=await this._makeRequest({start:e,end:r});return n===200?new Uint8Array(s).subarray(e,r):new Uint8Array(s)}async _retrieveSize(){if(this._fullData)return this._fullData.byteLength;let e=new XMLHttpRequest;e.open("HEAD",this._url,!0),e.withCredentials=this._withCredentials,await new Promise((s,n)=>{e.onload=()=>{e.status>=200&&e.status<300?s():n(new Error(`Error fetching ${this._url} (HEAD): ${e.status} ${e.statusText}`))},e.onerror=()=>{s()},e.send()});let r=e.getResponseHeader("Content-Length");if(!r){let{response:s}=await this._makeRequest();return s.byteLength}return parseInt(r,10)}};var $e=class{constructor(t){this.input=t}};var ve=class{constructor(t){this._backing=t}isVideoTrack(){return this instanceof W}isAudioTrack(){return this instanceof H}computeDuration(){return this._backing.computeDuration()}},W=class extends ve{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getCodedWidth(){return this._backing.getCodedWidth()}getCodedHeight(){return this._backing.getCodedHeight()}getRotation(){return this._backing.getRotation()}async getDisplayWidth(){return await this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}async getDisplayHeight(){return await this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}},H=class extends ve{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getNumberOfChannels(){return this._backing.getNumberOfChannels()}getSampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}};var pe=class{constructor(t,e=1/0){this.source=t;this.maxStorableBytes=e;this.loadedSegments=[];this.loadingSegments=[];this.sourceSizePromise=null;this.nextAge=0;this.totalStoredBytes=0}async loadRange(t,e){e=Math.min(e,await this.source._getSize());let r=this.loadingSegments.find(c=>c.start<=t&&c.end>=e);if(r){await r.promise;return}if(this.loadedSegments.some(c=>c.start<=t&&c.end>=e))return;let n=this.source._read(t,e),a={start:t,end:e,promise:n};this.loadingSegments.push(a);let o=await n;Wt(this.loadingSegments,a),this.insertIntoLoadedSegments(t,o)}insertIntoLoadedSegments(t,e){let r={start:t,end:t+e.byteLength,bytes:e,view:new DataView(e.buffer),age:this.nextAge++},s=E(this.loadedSegments,t,n=>n.start);(s===-1||this.loadedSegments[s].start=r.end)break;r.start<=a.start&&a.end<=r.end&&(this.loadedSegments.splice(n,1),n--)}for(;this.totalStoredBytes>this.maxStorableBytes&&this.loadedSegments.length>1;){let n=null,a=-1;for(let o=0;on.start),s=null;if(r!==-1)for(let n=r;nt)break;if(e<=a.end){s=a;break}}if(!s)throw new Error(`No segment loaded for range [${t}, ${e}).`);return s.age=this.nextAge++,{view:s.view,offset:s.bytes.byteOffset+t-s.start}}forgetRange(t,e){if(e<=t)return;let r=E(this.loadedSegments,t,n=>n.start);if(r===-1)return;let s=this.loadedSegments[r];s.start!==t||s.end!==e||(this.loadedSegments.splice(r,1),this.totalStoredBytes-=s.bytes.byteLength)}};var ne=class{constructor(t){this.reader=t;this.pos=0}readRange(t,e){let{view:r,offset:s}=this.reader.getViewAndOffset(t,e);return new Uint8Array(r.buffer,s,e-t)}readU8(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+1);return this.pos++,t.getUint8(e)}readU16(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+2);return this.pos+=2,t.getUint16(e,!1)}readU24(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+3);this.pos+=3;let r=t.getUint16(e,!1),s=t.getUint8(e+2);return r*256+s}readS32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getUint32(e,!1)}readI32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU64(){let t=this.readU32(),e=this.readU32();return t*4294967296+e}readF64(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+8);return this.pos+=8,t.getFloat64(e,!1)}readFixed_16_16(){return this.readS32()/65536}readFixed_2_30(){return this.readS32()/1073741824}readAscii(t){let{view:e,offset:r}=this.reader.getViewAndOffset(this.pos,this.pos+t);this.pos+=t;let s="";for(let n=0;ns.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();let e="video/mp4";if(this.tracks.length>0){let r=await Promise.all(this.tracks.map(n=>n.inputTrack.getCodecMimeType())),s=[...new Set(r)];e+=`; codecs="${s.join(", ")}"`}return e}readMetadata(){return this.metadataPromise??=(async()=>{let e=await this.isobmffReader.reader.source._getSize();for(;this.isobmffReader.pos=0&&ss.presentationTimestamp-n.presentationTimestamp),e.sampleTable}async readFragment(){let e=this.isobmffReader.pos;await this.isobmffReader.reader.loadRange(this.isobmffReader.pos,this.isobmffReader.pos+16);let r=this.isobmffReader.readBoxHeader();l(r.name==="moof"),await this.isobmffReader.reader.loadRange(e,e+r.totalSize),this.isobmffReader.pos=e,this.traverseBox();let s=Q(this.fragments,e,a=>a.moofOffset);l(s!==-1);let n=this.fragments[s];l(n.moofOffset===e),this.isobmffReader.reader.forgetRange(e,e+r.totalSize);for(let[a,o]of n.trackData){if(o.startTimestampIsFinal)continue;let c=this.tracks.find(m=>m.id===a);this.isobmffReader.pos=0;let u=null,d=null,f=E(c.fragments,e-1,m=>m.moofOffset);for(f!==-1&&(u=c.fragments[f],d=u,this.isobmffReader.pos=u.moofOffset+u.moofSize);this.isobmffReader.posp.moofOffset);if(b===-1){this.isobmffReader.pos=m;let p=await this.readFragment();u&&(u.nextFragment=p),u=p}else{let p=this.fragments[b];u&&(u.nextFragment=p),u=p}}this.isobmffReader.pos=m+g.totalSize}u&&u.trackData.has(a)&&(d=u)}if(d){let m=d.trackData.get(a);l(m.startTimestampIsFinal),kr(o,m.endTimestamp)}o.startTimestampIsFinal=!0}return n}readContiguousBoxes(e){let r=this.isobmffReader.pos;for(;this.isobmffReader.pos-rf.every((m,g)=>m===u[g]));d===-1?n.rotation=0:n.rotation=90*d}break;case"mdhd":{let n=this.currentTrack;l(n);let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3,a===0?(this.isobmffReader.pos+=8,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU32()):a===1&&(this.isobmffReader.pos+=16,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU64())}break;case"hdlr":{let n=this.currentTrack;l(n),this.isobmffReader.pos+=8;let a=this.isobmffReader.readAscii(4);a==="vide"?n.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null}:a==="soun"&&(n.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null})}break;case"stbl":{let n=this.currentTrack;l(n),n.sampleTableOffset=e,this.readContiguousBoxes(r.contentSize)}break;case"stsd":{let n=this.currentTrack;if(l(n),n.info===null||n.sampleTable)break;let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=this.isobmffReader.readU32();for(let c=0;c0){if(d===1)this.isobmffReader.pos+=4*4;else if(d===2){this.isobmffReader.pos+=4,m=this.isobmffReader.readF64(),f=this.isobmffReader.readU32(),this.isobmffReader.pos+=4;let g=this.isobmffReader.readU32(),b=this.isobmffReader.readU32(),p=this.isobmffReader.readU32(),k=this.isobmffReader.readU32()}}n.info.numberOfChannels=f,n.info.sampleRate=m,this.readContiguousBoxes(e+u.totalSize-this.isobmffReader.pos)}}}break;case"avcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"hvcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"colr":{let n=this.currentTrack;if(l(n&&n.info?.type==="video"),this.isobmffReader.readAscii(4)!=="nclx")break;let o=this.isobmffReader.readU16(),c=this.isobmffReader.readU16(),u=this.isobmffReader.readU16(),d=!!(this.isobmffReader.readU8()&128);n.info.colorSpace={primaries:Pt[o],transfer:zt[c],matrix:Ut[u],fullRange:d}}break;case"wave":r.totalSize>8&&this.readContiguousBoxes(r.contentSize);break;case"esds":{let n=this.currentTrack;l(n&&n.info),this.isobmffReader.pos+=4;let a=this.isobmffReader.readU8();l(a===3),this.isobmffReader.readIsomVariableInteger(),this.isobmffReader.pos+=2;let o=this.isobmffReader.readU8(),c=(o&128)!==0,u=(o&64)!==0,d=(o&32)!==0;if(c&&(this.isobmffReader.pos+=2),u){let p=this.isobmffReader.readU8();this.isobmffReader.pos+=p}d&&(this.isobmffReader.pos+=2);let f=this.isobmffReader.readU8();l(f===4),this.isobmffReader.readIsomVariableInteger();let m=this.isobmffReader.readU8();l(m===64),this.isobmffReader.pos+=12;let g=this.isobmffReader.readU8();l(g===5);let b=this.isobmffReader.readIsomVariableInteger();n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+b)}break;case"stts":{let n=this.currentTrack;if(l(n),!n.sampleTable)break;this.isobmffReader.pos+=4;let a=this.isobmffReader.readU32(),o=0,c=0;for(let u=0;ux.id===a);if(!o)break;o.fragmentLookupTable=[];let c=this.isobmffReader.readU32(),u=(c&48)>>4,d=(c&12)>>2,f=c&3,m=this.isobmffReader,g=[m.readU8.bind(m),m.readU16.bind(m),m.readU24.bind(m),m.readU32.bind(m)],b=g[u],p=g[d],k=g[f],T=this.isobmffReader.readU32();for(let x=0;xa.moofOffset);this.fragments.splice(n+1,0,this.currentFragment);for(let[,a]of this.currentFragment.trackData){let o=a.samples[0],c=F(a.samples);this.currentFragment.dataStart=Math.min(this.currentFragment.dataStart,o.byteOffset),this.currentFragment.dataEnd=Math.max(this.currentFragment.dataEnd,c.byteOffset+c.byteSize)}this.currentFragment=null}break;case"traf":if(l(this.currentFragment),this.readContiguousBoxes(r.contentSize),this.currentTrack){let n=this.currentFragment.trackData.get(this.currentTrack.id);if(n){let a=E(this.currentTrack.fragments,this.currentFragment.moofOffset,c=>c.moofOffset);this.currentTrack.fragments.splice(a+1,0,this.currentFragment);let{currentFragmentState:o}=this.currentTrack;l(o),o.startTimestamp!==null&&(kr(n,o.startTimestamp),n.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{l(this.currentFragment),this.isobmffReader.pos+=1;let n=this.isobmffReader.readU24(),a=!!(n&1),o=!!(n&2),c=!!(n&8),u=!!(n&16),d=!!(n&32),f=!!(n&65536),m=!!(n&131072),g=this.isobmffReader.readU32(),b=this.tracks.find(k=>k.id===g);if(!b)break;let p=this.fragmentTrackDefaults.find(k=>k.trackId===g);this.currentTrack=b,b.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:p?.defaultSampleDescriptionIndex??null,defaultSampleDuration:p?.defaultSampleDuration??null,defaultSampleSize:p?.defaultSampleSize??null,defaultSampleFlags:p?.defaultSampleFlags??null,startTimestamp:null},a?b.currentFragmentState.baseDataOffset=this.isobmffReader.readU64():m&&(b.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),o&&(b.currentFragmentState.sampleDescriptionIndex=this.isobmffReader.readU32()),c&&(b.currentFragmentState.defaultSampleDuration=this.isobmffReader.readU32()),u&&(b.currentFragmentState.defaultSampleSize=this.isobmffReader.readU32()),d&&(b.currentFragmentState.defaultSampleFlags=this.isobmffReader.readU32()),f&&(b.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let n=this.currentTrack;if(!n)break;l(n.currentFragmentState);let a=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=a===0?this.isobmffReader.readU32():this.isobmffReader.readU64();n.currentFragmentState.startTimestamp=o}break;case"trun":{let n=this.currentTrack;if(!n)break;if(l(this.currentFragment),l(n.currentFragmentState),this.currentFragment.trackData.has(n.id))throw new Error("Can't have two trun boxes for the same track in one fragment.");let a=this.isobmffReader.readU8(),o=this.isobmffReader.readU24(),c=!!(o&1),u=!!(o&4),d=!!(o&256),f=!!(o&512),m=!!(o&1024),g=!!(o&2048),b=this.isobmffReader.readU32(),p=n.currentFragmentState.baseDataOffset;c&&(p+=this.isobmffReader.readI32());let k=null;u&&(k=this.isobmffReader.readU32());let T=p;if(b===0){this.currentFragment.implicitBaseDataOffset=T;break}let x=0,C={startTimestamp:0,endTimestamp:0,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(n.id,C);for(let I=0;I({presentationTimestamp:I.presentationTimestamp,sampleIndex:R})).sort((I,R)=>I.presentationTimestamp-R.presentationTimestamp);let O=C.samples[C.presentationTimestamps[0].sampleIndex],_=C.samples[F(C.presentationTimestamps).sampleIndex];C.startTimestamp=O.presentationTimestamp,C.endTimestamp=_.presentationTimestamp+_.duration,this.currentFragment.implicitBaseDataOffset=T}break}this.isobmffReader.pos=s}},je=class{constructor(t){this.internalTrack=t;this.chunkToSampleIndex=new WeakMap;this.chunkToFragmentLocation=new WeakMap}getCodec(){throw new Error("Not implemented on base class.")}async computeDuration(){let e=(await this.getChunk(1/0,{metadataOnly:!0}))?.timestamp;return e?e/1e6:0}async getFirstChunk(t){return this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(()=>{let e=this.internalTrack.fragments[0];return{fragmentIndex:e?0:-1,sampleIndex:e?0:-1,correctSampleFound:!!e}},0,1/0,t):this.fetchChunkForSampleIndex(0,t)}roundToMicrosecond(t){return(Math.floor(t*1e6)+.99999999)/1e6}async getChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findSampleInFragmentsForTimestamp(r),r,r,e);{let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=br(s,r);return this.fetchChunkForSampleIndex(n,e)}}async getNextChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let s=this.chunkToFragmentLocation.get(t);if(s===void 0)throw new Error("Chunk was not created from this track.");let n=s.fragment.trackData.get(this.internalTrack.id),a=n.samples[s.sampleIndex],o=Q(this.internalTrack.fragments,s.fragment.moofOffset,c=>c.moofOffset);return l(o!==-1),this.performFragmentedLookup(()=>{if(s.sampleIndex+1f.moofOffset);return l(d!==-1),{fragmentIndex:d,sampleIndex:0,correctSampleFound:!0}}return{fragmentIndex:o,sampleIndex:-1,correctSampleFound:!1}}},a.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");return this.fetchChunkForSampleIndex(r+1,e)}async getKeyChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findKeySampleInFragmentsForTimestamp(r),r,r,e);let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=br(s,r),a=n===-1?-1:Ii(s,n);return this.fetchChunkForSampleIndex(a,e)}async getNextKeyChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let a=this.chunkToFragmentLocation.get(t);if(a===void 0)throw new Error("Chunk was not created from this track.");let o=a.fragment.trackData.get(this.internalTrack.id),c=o.samples[a.sampleIndex],u=Q(this.internalTrack.fragments,a.fragment.moofOffset,d=>d.moofOffset);return l(u!==-1),this.performFragmentedLookup(()=>{let d=o.samples.findIndex((f,m)=>f.isKeyFrame&&m>a.sampleIndex);if(d!==-1)return{fragmentIndex:u,sampleIndex:d,correctSampleFound:!0};{let f=a.fragment;for(;f.nextFragment;){f=f.nextFragment;let m=f.trackData.get(this.internalTrack.id);if(m){let g=Q(this.internalTrack.fragments,f.moofOffset,p=>p.moofOffset);l(g!==-1);let b=m.samples.findIndex(p=>p.isKeyFrame);if(b===-1)throw new Error("Not supported: Fragment does not contain key sample.");return{fragmentIndex:g,sampleIndex:b,correctSampleFound:!0}}}return{fragmentIndex:u,sampleIndex:-1,correctSampleFound:!1}}},c.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");let s=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Ei(s,r);return this.fetchChunkForSampleIndex(n,e)}async fetchChunkForSampleIndex(t,e){if(t===-1)return null;let r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),s=Ai(r,t);if(!s)return null;let n;e.metadataOnly?n=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(s.chunkOffset,s.chunkOffset+s.chunkSize),n=this.internalTrack.demuxer.chunkReader.readRange(s.sampleOffset,s.sampleOffset+s.sampleSize));let a=1e6*s.presentationTimestamp/this.internalTrack.timescale,o=1e6*s.duration/this.internalTrack.timescale,c=this.createChunk(n,a,o,s.isKeyFrame);return this.chunkToSampleIndex.set(c,t),c}async fetchChunkInFragment(t,e,r){if(e===-1)return null;let n=t.trackData.get(this.internalTrack.id).samples[e];l(n);let a;r.metadataOnly?a=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(t.dataStart,t.dataEnd),a=this.internalTrack.demuxer.chunkReader.readRange(n.byteOffset,n.byteOffset+n.byteSize));let o=1e6*n.presentationTimestamp/this.internalTrack.timescale,c=1e6*n.duration/this.internalTrack.timescale,u=this.createChunk(a,o,c,n.isKeyFrame);return this.chunkToFragmentLocation.set(u,{fragment:t,sampleIndex:e}),u}findSampleInFragmentsForTimestamp(t){let e=E(this.internalTrack.fragments,t,n=>n.trackData.get(this.internalTrack.id).startTimestamp),r=-1,s=!1;if(e!==-1){let a=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=E(a.presentationTimestamps,t,c=>c.presentationTimestamp);l(o!==-1),r=a.presentationTimestamps[o].sampleIndex,s=tn.trackData.get(this.internalTrack.id).startTimestamp),r=-1,s=!1;if(e!==-1){let a=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=Ht(a.presentationTimestamps,u=>a.samples[u.sampleIndex].isKeyFrame&&u.presentationTimestamp<=t);if(o===-1)throw new Error("Not supported: Fragment does not begin with a key sample.");r=a.presentationTimestamps[o].sampleIndex,s=tT.timestamp);k!==-1&&(p=this.internalTrack.fragmentLookupTable[k])}if(o===-1)d.pos=p?.moofOffset??0;else{let k=this.internalTrack.fragments[o];!p||k.moofOffset>=k.moofOffset?(d.pos=k.moofOffset+k.moofSize,m=k):d.pos=p.moofOffset}for(;d.posr)break;if(m.nextFragment){d.pos=m.nextFragment.moofOffset+m.nextFragment.moofSize,m=m.nextFragment;continue}}await d.reader.loadRange(d.pos,d.pos+16);let k=d.pos,T=d.readBoxHeader();if(T.name==="moof"){let x=Q(n.fragments,k,C=>C.moofOffset);if(x===-1){d.pos=k;let C=await n.readFragment();m&&(m.nextFragment=C),m=C;let{fragmentIndex:O,sampleIndex:_,correctSampleFound:I}=t();if(I){let R=this.internalTrack.fragments[O];return this.fetchChunkInFragment(R,_,s)}O!==-1&&(g=O,b=_)}else{let C=n.fragments[x];m&&(m.nextFragment=C),m=C}}d.pos=k+T.totalSize}if(g!==-1){let k=this.internalTrack.fragments[g];return this.fetchChunkInFragment(k,b,s)}return null}finally{a()}}},Et=class extends je{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getCodedWidth(){return this.internalTrack.info.width}async getCodedHeight(){return this.internalTrack.info.height}async getRotation(){return this.internalTrack.rotation}async getDecoderConfig(){return{codec:or(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}}createChunk(t,e,r,s){return new EncodedVideoChunk({data:t,timestamp:e,duration:r,type:s?"key":"delta"})}},Rt=class extends je{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}async getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return{codec:ur(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}}createChunk(t,e,r,s){return new EncodedAudioChunk({data:t,timestamp:e,duration:r,type:s?"key":"delta"})}},br=(i,t)=>{let e=E(i.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:i.presentationTimestamps[e].sampleIndex},Ai=(i,t)=>{let e=E(i.sampleTimingEntries,t,p=>p.startIndex),r=i.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,a=E(i.sampleCompositionTimeOffsets,t,p=>p.startIndex),o=i.sampleCompositionTimeOffsets[a];o&&(n+=o.offset);let c=i.sampleSizes[Math.min(t,i.sampleSizes.length-1)],u=E(i.sampleToChunk,t,p=>p.startSampleIndex),d=i.sampleToChunk[u];l(d);let f=d.startChunkIndex+Math.floor((t-d.startSampleIndex)/d.samplesPerChunk),m=i.chunkOffsets[f],g=0,b=m;if(i.sampleSizes.length===1)b+=c*(t-d.startSampleIndex),g+=c*d.samplesPerChunk;else{let p=d.startSampleIndex+(f-d.startChunkIndex)*d.samplesPerChunk;for(let k=p;kp)!==-1:!0}},Ii=(i,t)=>{if(!i.keySampleIndices)return t;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e]??-1},Ei=(i,t)=>{if(!i.keySampleIndices)return t+1;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e+1]??-1},kr=(i,t)=>{i.startTimestamp+=t,i.endTimestamp+=t;for(let e of i.samples)e.presentationTimestamp+=t;for(let e of i.presentationTimestamps)e.presentationTimestamp+=t};var se=class{},qe=class extends se{async _canReadInput(t){if(await t._mainReader.source._getSize()<8)return!1;let r=new ne(t._mainReader);return r.pos=4,r.readAscii(4)==="ftyp"}_createDemuxer(t){return new Ke(t)}},Xe=class extends se{async _canReadInput(){return!1}_createDemuxer(){throw new Error("Not implemented")}},Ge=new qe,Ri=Ge,Oi=Ge,Ot=new Xe,gr=Ot,Fi=Ot,Vi=[Ge,gr];var Ft=class{constructor(t){this._demuxerPromise=null;this._format=null;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!Array.isArray(t.formats)||t.formats.some(e=>!(e instanceof se)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(t.source instanceof X))throw new TypeError("options.source must be a Source.");this._formats=t.formats,this._source=t.source,this._mainReader=new pe(t.source)}_getDemuxer(){return this._demuxerPromise??=(async()=>{await this._mainReader.loadRange(0,4096);for(let t of this._formats)if(await t._canReadInput(this))return this._format=t,t._createDemuxer(this);throw new Error("Input has an unrecognizable format.")})()}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async computeDuration(){return(await this._getDemuxer()).computeDuration()}async getTracks(){return(await this._getDemuxer()).getTracks()}async getVideoTracks(){return(await this.getTracks()).filter(e=>e.isVideoTrack())}async getPrimaryVideoTrack(){return(await this.getTracks()).find(e=>e.isVideoTrack())??null}async getAudioTracks(){return(await this.getTracks()).filter(e=>e.isAudioTrack())}async getPrimaryAudioTrack(){return(await this.getTracks()).find(e=>e.isAudioTrack())??null}async getMimeType(){return(await this._getDemuxer()).getMimeType()}};var L=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.metadataOnly!==void 0&&typeof i.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.")},U=i=>{if(typeof i!="number"||Number.isNaN(i))throw new TypeError("timestamp must be a number.")},_e=class{async*chunks(t,e=1/0){let r=[],{promise:s,resolve:n}=M(),{promise:a,resolve:o}=M(),c=!1,u=null,d=[],f=()=>Math.max(2,d.length);(async()=>{let m=t??await this.getFirstChunk();for(;m&&!c&&!(m.timestamp/1e6>=e);){if(r.length>f()){({promise:a,resolve:o}=M()),await a;continue}r.push(m),n(),{promise:s,resolve:n}=M(),m=await this.getNextChunk(m)}c=!0,n()})().catch(m=>{u||(u=m,n())});try{for(;;){if(u)throw u;if(r.length>0){yield r.shift();let m=performance.now();for(d.push(m);d.length>0&&m-d[0]>=1e3;)d.shift();o()}else if(!c)await s;else break}}finally{c=!0,o()}}},Ae=class{_duplicateFrame(t){return structuredClone(t)}async*mediaFramesAtTimestamps(t){Qt(t);let e=Lt(t),r=[],s=8,n=[],{promise:a,resolve:o}=M(),{promise:c,resolve:u}=M(),d=!1,f=!1,m=null,g=null,b=T=>{n.push(T),o(),{promise:a,resolve:o}=M()},p=new Error,k=await this._createDecoder(T=>{if(u(),f){T.close();return}let x=!1;for(;r.length>0&&r[0]===T.timestamp;)b(this._duplicateFrame(T)),r.shift(),x=!0;x?(g?.close(),g=T):T.close()},T=>{m||(T.stack=p.stack,m=T,o())});(async()=>{let T=this._createChunkDrain(),x=null,C=null;for await(let O of e){for(U(O);n.length+k.decodeQueueSize>s;)({promise:c,resolve:u}=M()),await c;if(f)break;let _=await T.getChunk(O);if(!_){b(null);continue}let I=await T.getKeyChunk(O);if(!I){b(null);continue}for(r.push(_.timestamp),x&&I.timestamp===x.timestamp&&_.timestamp>=C.timestamp?(l(C),_.timestamp===C.timestamp&&r.length===1&&(g&&b(this._duplicateFrame(g)),r.shift())):(x=I,C=I,k.decode(I));C.timestamp!==_.timestamp;){let R=await T.getNextChunk(C);l(R),C=R,k.decode(R)}k.decodeQueueSize>=10&&await new Promise(R=>k.addEventListener("dequeue",R,{once:!0}))}await k.flush(),k.close(),d=!0,o()})().catch(T=>{m||(m=T,o())});try{for(;;){if(m)throw m;if(n.length>0){let T=n.shift();l(T!==void 0),yield T,u()}else if(!d)await a;else break}}finally{f=!0,u();for(let T of n)T?.close();g?.close()}}async*mediaFramesInRange(t=0,e=1/0){U(t),U(e);let r=8,s=[],n=!1,a=null,{promise:o,resolve:c}=M(),{promise:u,resolve:d}=M(),f=!1,m=!1,g=null,b=new Error,p=await this._createDecoder(x=>{d();let C=x.timestamp/1e6;if(C>=e&&(m=!0),m){x.close();return}a&&(C>t?(s.push(a),n=!0):a.close()),C>=t&&(s.push(x),n=!0),a=n?null:x,s.length>0&&(c(),{promise:o,resolve:c}=M())},x=>{g||(x.stack=b.stack,g=x,c())}),k=this._createChunkDrain(),T=await k.getKeyChunk(t)??await k.getFirstChunk();if(T){(async()=>{let x=T,C=1/0;if(e<1/0){let _=await k.getChunk(e),I=_?_.type==="key"&&_.timestamp/1e6===e?_:await k.getNextKeyChunk(_):null;I&&(C=I.timestamp/1e6)}let O=k.chunks(T,C);for(await O.next();x&&!m;){if(s.length+p.decodeQueueSize>r){({promise:u,resolve:d}=M()),await u;continue}p.decode(x);let _=await O.next();if(_.done)break;x=_.value}await O.return(),await p.flush(),p.close(),!n&&a&&s.push(a),f=!0,c()})().catch(x=>{g||(g=x,c())});try{for(;;){if(g)throw g;if(s.length>0)yield s.shift(),d();else if(!f)await o;else break}}finally{m=!0,d();for(let x of s)x.close()}}}},Ye=class extends _e{constructor(t){if(!(t instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._videoTrack=t}getFirstChunk(t={}){return L(t),this._videoTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return U(t),L(e),this._videoTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return L(e),this._videoTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return U(t),L(e),this._videoTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return L(e),this._videoTrack._backing.getNextKeyChunk(t,e)}},Ze=class extends Ae{constructor(e){if(!(e instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");super();this._decoderConfig=null;this._videoTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._videoTrack.getDecoderConfig();let s=new VideoDecoder({output:e,error:r});return s.configure(this._decoderConfig),s}_createChunkDrain(){return new Ye(this._videoTrack)}async getFrame(e){U(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}frames(e=0,r=1/0){return this.mediaFramesInRange(e,r)}framesAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},Vt=class{constructor(t,e){if(!(t instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");if(e&&typeof e!="object")throw new TypeError("dimensions, when defined, must be an object.");if(e&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("dimensions.width must be a positive integer.");if(e&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("dimensions.height must be a positive integer.");this._videoTrack=t,this._dimensions=e,this._videoFrameDrain=new Ze(t)}async _videoFrameToWrappedCanvas(t){let e=this._dimensions?.width??await this._videoTrack.getDisplayWidth(),r=this._dimensions?.height??await this._videoTrack.getDisplayHeight(),s=await this._videoTrack.getRotation(),n=document.createElement("canvas");n.width=e,n.height=r;let a=n.getContext("2d",{alpha:!1});l(a),a.translate(e/2,r/2),a.rotate(s*Math.PI/180),a.translate(-e/2,-r/2);let[o,c]=s%180===0?[e,r]:[r,e];a.drawImage(t,(e-o)/2,(r-c)/2,o,c);let u={canvas:n,timestamp:t.timestamp/1e6,duration:(t.duration??0)/1e6};return t.close(),u}async getCanvas(t){U(t);let e=await this._videoFrameDrain.getFrame(t);return e&&this._videoFrameToWrappedCanvas(e)}async*canvases(t=0,e=1/0){for await(let r of this._videoFrameDrain.frames(t,e))yield this._videoFrameToWrappedCanvas(r)}async*canvasesAtTimestamps(t){for await(let e of this._videoFrameDrain.framesAtTimestamps(t))yield e&&this._videoFrameToWrappedCanvas(e)}},Je=class extends _e{constructor(t){if(!(t instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._audioTrack=t}getFirstChunk(t={}){return L(t),this._audioTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return U(t),L(e),this._audioTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return L(e),this._audioTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return U(t),L(e),this._audioTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return L(e),this._audioTrack._backing.getNextKeyChunk(t,e)}},et=class extends Ae{constructor(e){if(!(e instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");super();this._decoderConfig=null;this._audioTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._audioTrack.getDecoderConfig();let s=new AudioDecoder({output:e,error:r});return s.configure(this._decoderConfig),s}_createChunkDrain(){return new Je(this._audioTrack)}async getData(e){U(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}data(e=0,r=1/0){return this.mediaFramesInRange(e,r)}dataAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},Mt=class{constructor(t){if(!(t instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioDataDrain=new et(t)}_audioDataToWrappedArrayBuffer(t){let e=new AudioBuffer({numberOfChannels:t.numberOfChannels,length:t.numberOfFrames,sampleRate:t.sampleRate}),r=new Float32Array(t.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let a=0;ar.track===e))return;e:for(;;){let e=null,r=1/0;for(let n of this.trackDatas){if(n.chunkQueue.length===0&&!n.track.source._closed)break e;n.chunkQueue.length>0&&n.chunkQueue[0].timestamp=2&&a++;let u={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];Dt(r.data,a+0,a+3,u)}createInternalChunk(e,r,a,n,s=null){return{data:e,type:n,timestamp:r,duration:a,additions:s}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let a=Math.floor(1e3*r.timestamp),n=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let m=f.chunkQueue[0];return m&&m.type==="key"});(!this.currentCluster||n&&a-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(a);let s=a-this.currentClusterMsTimestamp;if(s<0)return;if(s>=ht)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${ht} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${ht} milliseconds.`);let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,s,!1);let d=Math.floor(1e3*r.duration);if(d===0&&!r.additions){u.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[c,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new we(e.lastWrittenMsTimestamp-a)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,d>0?{id:155,data:d}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,a+d),e.lastWrittenMsTimestamp=a,this.trackDatasInCurrentCluster.add(e)}createNewCluster(e){this.currentCluster&&!this.format._options.streamable&&this.finalizeCurrentCluster(),this.currentCluster={id:524531317,size:this.format._options.streamable?-1:pr,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){l(this.currentCluster);let e=this.writer.getPos()-this.dataOffsets.get(this.currentCluster),r=this.writer.getPos();this.writer.seek(this.offsets.get(this.currentCluster)+4),this.writeEBMLVarInt(e,pr),this.writer.seek(r);let a=this.offsets.get(this.currentCluster)-this.segmentDataOffset;l(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(n=>({id:183,data:[{id:247,data:n.track.id},{id:241,data:a}]}))]})}async onTrackClose(){let e=await this.mutex.acquire();await this.interleaveChunks(),e()}async finalize(){let e=await this.mutex.acquire();this.segment||(this.createTracks(),this.createSegment());for(let r of this.trackDatas)for(;r.chunkQueue.length>0;)this.writeBlock(r,r.chunkQueue.shift());if(!this.format._options.streamable&&this.currentCluster&&this.finalizeCurrentCluster(),l(this.cues),this.writeEBML(this.cues),!this.format._options.streamable){let r=this.writer.getPos(),a=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.offsets.get(this.segment)+4),this.writeEBMLVarInt(a,hr),this.segmentDuration.data=new le(this.duration),this.writer.seek(this.offsets.get(this.segmentDuration)),this.writeEBML(this.segmentDuration),this.seekHead.data[0].data[1].data=this.offsets.get(this.cues)-this.segmentDataOffset,this.seekHead.data[1].data[1].data=this.offsets.get(this.segmentInfo)-this.segmentDataOffset,this.seekHead.data[2].data[1].data=this.offsets.get(this.tracksElement)-this.segmentDataOffset,this.writer.seek(this.offsets.get(this.seekHead)),this.writeEBML(this.seekHead),this.writer.seek(r)}e()}};var ie=class{},pt=class extends ie{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(t.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=t}_createMuxer(t){return new He(t,this)}},Qe=class extends ie{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.streamable!==void 0&&typeof t.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=t}_createMuxer(t){return new Le(t,this)}},me=class extends Qe{};var fe=class{constructor(){this._connectedTrack=null;this._closed=!1;this._offsetTimestamps=!1}_ensureValidDigest(){if(!this._connectedTrack)throw new Error("Cannot call digest without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call digest before output has been started.");if(this._connectedTrack.output._finalizing)throw new Error("Cannot call digest after output has started finalizing.");if(this._closed)throw new Error("Cannot call digest after source has been closed.")}_start(){}async _flush(){}close(){if(this._closed)throw new Error("Source already closed.");if(!this._connectedTrack)throw new Error("Cannot call close without connecting the source to an output track.");if(!this._connectedTrack.output._started)throw new Error("Cannot call close before output has been started.");this._closed=!0,!this._connectedTrack.output._finalizing&&this._connectedTrack.output._muxer.onTrackClose(this._connectedTrack)}},$=class extends fe{constructor(e){super();this._connectedTrack=null;if(!ue.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${ue.join(", ")}.`);this._codec=e}},bt=class extends ${constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,t,e)}},yi=5,Si=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!ue.includes(i.codec))throw new TypeError(`Invalid video codec '${i.codec}'. Must be one of: ${ue.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.latencyMode!==void 0&&!["quality","realtime"].includes(i.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.");if(i.onEncodingError!==void 0&&typeof i.onEncodingError!="function")throw new TypeError("config.onEncodingError, when provided, must be a function.")},ye=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;Si(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(t.codedWidth!==this.lastWidth||t.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${t.codedWidth}x${t.codedHeight}.`)}else this.lastWidth=t.codedWidth,this.lastHeight=t.codedHeight;this.ensureEncoder(t),l(this.encoder);let e=Math.floor(t.timestamp/1e6/yi);this.encoder.encode(t,{keyFrame:e!==this.lastMultipleOfKeyFrameInterval}),this.lastMultipleOfKeyFrameInterval=e,this.encoder.encodeQueueSize>=4&&await new Promise(r=>this.encoder.addEventListener("dequeue",r,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>void this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:this.codecConfig.onEncodingError??(e=>console.error("VideoEncoder error:",e))}),this.encoder.configure({codec:sr(this.codecConfig.codec,t.codedWidth,t.codedHeight,this.codecConfig.bitrate),width:t.codedWidth,height:t.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...dr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},kt=class extends ${constructor(t){super(t.codec),this._encoder=new ye(this,t)}digest(t){if(!(t instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},gt=class extends ${constructor(t,e){if(!(t instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new ye(this,e),this._canvas=t}digest(t,e=0){if(!Number.isFinite(t)||t<0)throw new TypeError("timestamp must be a non-negative number.");if(!Number.isFinite(e)||e<0)throw new TypeError("duration must be a non-negative number.");let r=new VideoFrame(this._canvas,{timestamp:Math.round(1e6*t),duration:Math.round(1e6*e),alpha:"discard"}),a=this._encoder.digest(r);return r.close(),a}_flush(){return this._encoder.flush()}},Tt=class extends ${constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._offsetTimestamps=!0;this._encoder=new ye(this,r),this._track=e}_start(){this._abortController=new AbortController;let e=new MediaStreamTrackProcessor({track:this._track}),r=new WritableStream({write:a=>{this._encoder.digest(a),a.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(a=>{a instanceof DOMException&&a.name==="AbortError"||console.error("Pipe error:",a)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},K=class extends fe{constructor(e){super();this._connectedTrack=null;if(!de.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${de.join(", ")}.`);this._codec=e}},xt=class extends K{constructor(t){super(t)}digest(t,e){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,t,e)}},vi=i=>{if(!i||typeof i!="object")throw new TypeError("Codec config must be an object.");if(!de.includes(i.codec))throw new TypeError(`Invalid audio codec '${i.codec}'. Must be one of: ${de.join(", ")}.`);if(!Number.isInteger(i.bitrate)||i.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(i.onEncodingError!==void 0&&typeof i.onEncodingError!="function")throw new TypeError("config.onEncodingError, when provided, must be a function.")},Se=class{constructor(t,e){this.source=t;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;vi(e)}async digest(t){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(t.numberOfChannels!==this.lastNumberOfChannels||t.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${t.numberOfChannels} channels at ${t.sampleRate} Hz.`)}else this.lastNumberOfChannels=t.numberOfChannels,this.lastSampleRate=t.sampleRate;this.ensureEncoder(t),l(this.encoder),this.encoder.encode(t),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(t){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>void this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:this.codecConfig.onEncodingError??(e=>console.error("AudioEncoder error:",e))}),this.encoder.configure({codec:cr(this.codecConfig.codec,t.numberOfChannels,t.sampleRate),numberOfChannels:t.numberOfChannels,sampleRate:t.sampleRate,bitrate:this.codecConfig.bitrate,...lr(this.codecConfig.codec)}),l(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Ct=class extends K{constructor(t){super(t.codec),this._encoder=new Se(this,t)}digest(t){if(!(t instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(t)}_flush(){return this._encoder.flush()}},wt=class extends K{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new Se(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,a=e.sampleRate,n=e.length,s=new Float32Array(r*n);for(let u=0;u{this._encoder.digest(a),a.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(a=>{a instanceof DOMException&&a.name==="AbortError"||console.error("Pipe error:",a)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},he=class extends fe{constructor(e){super();this._connectedTrack=null;if(!Ue.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Ue.join(", ")}.`);this._codec=e}},St=class extends he{constructor(t){super(t),this._parser=new Oe({codec:t,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r)})}digest(t){if(typeof t!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(t),this._connectedTrack.output._muxer.mutex.currentPromise}};var vt=class{constructor(t){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new j;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.format instanceof ie))throw new TypeError("options.format must be an OutputFormat.");if(!(t.target instanceof re))throw new TypeError("options.target must be a Target.");if(t.target._output)throw new Error("Target is already used for another output.");t.target._output=this,this._writer=t.target._createWriter(),this._muxer=t.format._createMuxer(this)}addVideoTrack(t,e={}){if(!(t instanceof $))throw new TypeError("source must be a VideoSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");if(typeof e.rotation=="number"&&![0,90,180,270].includes(e.rotation))throw new TypeError(`Invalid video rotation: ${e.rotation}. Has to be 0, 90, 180 or 270.`);if(Array.isArray(e.rotation)&&(e.rotation.length!==9||e.rotation.some(r=>!Number.isFinite(r))))throw new TypeError(`Invalid video transformation matrix: ${e.rotation.join()}`);if(e.frameRate!==void 0&&(!Number.isInteger(e.frameRate)||e.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",t,e)}addAudioTrack(t,e={}){if(!(t instanceof K))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",t,e)}addSubtitleTrack(t,e={}){if(!(t instanceof he))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",t,e)}_addTrack(t,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let a={id:this._tracks.length+1,output:this,type:t,source:e,metadata:r};this._muxer.beforeTrackAdd(a),this._tracks.push(a),e._connectedTrack=a}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let t=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();t()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),t()}};var X=class{constructor(){this._sizePromise=null}_getSize(){return this._sizePromise??=this._retrieveSize()}},_t=class extends X{constructor(t){if(!(t instanceof ArrayBuffer)&&!(t instanceof Uint8Array))throw new TypeError("buffer must be an ArrayBuffer or Uint8Array.");super(),this._bytes=t instanceof Uint8Array?t:new Uint8Array(t)}async _read(t,e){return this._bytes.subarray(t,e)}async _retrieveSize(){return this._bytes.byteLength}},At=class extends X{constructor(t){if(!(t instanceof Blob))throw new TypeError("blob must be a Blob.");super(),this._blob=t}async _read(t,e){let a=await this._blob.slice(t,e).arrayBuffer();return new Uint8Array(a)}async _retrieveSize(){return this._blob.size}},It=class extends X{constructor(e,r={}){if(typeof e!="string")throw new TypeError("url must be a string.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.withCredentials!==void 0&&typeof r.withCredentials!="boolean")throw new TypeError("options.withCredentials, when specified, must be a boolean.");super();this._fullData=null;this._url=e,this._withCredentials=r.withCredentials??!1}_makeRequest(e){return new Promise((r,a)=>{let n=new XMLHttpRequest;n.open("GET",this._url,!0),n.responseType="arraybuffer",n.withCredentials=this._withCredentials,e&&n.setRequestHeader("Range",`bytes=${e.start}-${e.end-1}`),n.onload=()=>{if(n.status>=200&&n.status<300){let s=n.response;e||(this._fullData=s),r({response:s,statusCode:n.status})}else a(new Error(`Error fetching ${this._url}: ${n.status} ${n.statusText}`))},n.onerror=()=>{a(new Error("Network error occurred."))},n.ontimeout=()=>{a(new Error("Request timed out."))},n.send()})}async _read(e,r){if(this._fullData)return new Uint8Array(this._fullData,e,r-e);let{response:a,statusCode:n}=await this._makeRequest({start:e,end:r});return n===200?new Uint8Array(a).subarray(e,r):new Uint8Array(a)}async _retrieveSize(){if(this._fullData)return this._fullData.byteLength;let e=new XMLHttpRequest;e.open("HEAD",this._url,!0),e.withCredentials=this._withCredentials,await new Promise((a,n)=>{e.onload=()=>{e.status>=200&&e.status<300?a():n(new Error(`Error fetching ${this._url} (HEAD): ${e.status} ${e.statusText}`))},e.onerror=()=>{a()},e.send()});let r=e.getResponseHeader("Content-Length");if(!r){let{response:a}=await this._makeRequest();return a.byteLength}return parseInt(r,10)}};var $e=class{constructor(t){this.input=t}};var ve=class{constructor(t){this._backing=t}isVideoTrack(){return this instanceof W}isAudioTrack(){return this instanceof H}computeDuration(){return this._backing.computeDuration()}},W=class extends ve{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getCodedWidth(){return this._backing.getCodedWidth()}getCodedHeight(){return this._backing.getCodedHeight()}getRotation(){return this._backing.getRotation()}async getDisplayWidth(){return await this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}async getDisplayHeight(){return await this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}},H=class extends ve{constructor(t){super(t),this._backing=t}getCodec(){return this._backing.getCodec()}getNumberOfChannels(){return this._backing.getNumberOfChannels()}getSampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecMimeType(){return(await this.getDecoderConfig()).codec}};var pe=class{constructor(t,e=1/0){this.source=t;this.maxStorableBytes=e;this.loadedSegments=[];this.loadingSegments=[];this.sourceSizePromise=null;this.nextAge=0;this.totalStoredBytes=0}async loadRange(t,e){e=Math.min(e,await this.source._getSize());let r=this.loadingSegments.find(c=>c.start<=t&&c.end>=e);if(r){await r.promise;return}if(this.loadedSegments.some(c=>c.start<=t&&c.end>=e))return;let n=this.source._read(t,e),s={start:t,end:e,promise:n};this.loadingSegments.push(s);let o=await n;Wt(this.loadingSegments,s),this.insertIntoLoadedSegments(t,o)}insertIntoLoadedSegments(t,e){let r={start:t,end:t+e.byteLength,bytes:e,view:new DataView(e.buffer),age:this.nextAge++},a=E(this.loadedSegments,t,n=>n.start);(a===-1||this.loadedSegments[a].start=r.end)break;r.start<=s.start&&s.end<=r.end&&(this.loadedSegments.splice(n,1),n--)}for(;this.totalStoredBytes>this.maxStorableBytes&&this.loadedSegments.length>1;){let n=null,s=-1;for(let o=0;on.start),a=null;if(r!==-1)for(let n=r;nt)break;if(e<=s.end){a=s;break}}if(!a)throw new Error(`No segment loaded for range [${t}, ${e}).`);return a.age=this.nextAge++,{view:a.view,offset:a.bytes.byteOffset+t-a.start}}forgetRange(t,e){if(e<=t)return;let r=E(this.loadedSegments,t,n=>n.start);if(r===-1)return;let a=this.loadedSegments[r];a.start!==t||a.end!==e||(this.loadedSegments.splice(r,1),this.totalStoredBytes-=a.bytes.byteLength)}};var ne=class{constructor(t){this.reader=t;this.pos=0}readRange(t,e){let{view:r,offset:a}=this.reader.getViewAndOffset(t,e);return new Uint8Array(r.buffer,a,e-t)}readU8(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+1);return this.pos++,t.getUint8(e)}readU16(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+2);return this.pos+=2,t.getUint16(e,!1)}readU24(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+3);this.pos+=3;let r=t.getUint16(e,!1),a=t.getUint8(e+2);return r*256+a}readS32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getUint32(e,!1)}readI32(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+4);return this.pos+=4,t.getInt32(e,!1)}readU64(){let t=this.readU32(),e=this.readU32();return t*4294967296+e}readF64(){let{view:t,offset:e}=this.reader.getViewAndOffset(this.pos,this.pos+8);return this.pos+=8,t.getFloat64(e,!1)}readFixed_16_16(){return this.readS32()/65536}readFixed_2_30(){return this.readS32()/1073741824}readAscii(t){let{view:e,offset:r}=this.reader.getViewAndOffset(this.pos,this.pos+t);this.pos+=t;let a="";for(let n=0;na.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();let e="video/mp4";if(this.tracks.length>0){let r=await Promise.all(this.tracks.map(n=>n.inputTrack.getCodecMimeType())),a=[...new Set(r)];e+=`; codecs="${a.join(", ")}"`}return e}readMetadata(){return this.metadataPromise??=(async()=>{let e=await this.isobmffReader.reader.source._getSize();for(;this.isobmffReader.pos=0&&aa.presentationTimestamp-n.presentationTimestamp),e.sampleTable}async readFragment(){let e=this.isobmffReader.pos;await this.isobmffReader.reader.loadRange(this.isobmffReader.pos,this.isobmffReader.pos+16);let r=this.isobmffReader.readBoxHeader();l(r.name==="moof"),await this.isobmffReader.reader.loadRange(e,e+r.totalSize),this.isobmffReader.pos=e,this.traverseBox();let a=Q(this.fragments,e,s=>s.moofOffset);l(a!==-1);let n=this.fragments[a];l(n.moofOffset===e),this.isobmffReader.reader.forgetRange(e,e+r.totalSize);for(let[s,o]of n.trackData){if(o.startTimestampIsFinal)continue;let c=this.tracks.find(m=>m.id===s);this.isobmffReader.pos=0;let u=null,d=null,f=E(c.fragments,e-1,m=>m.moofOffset);for(f!==-1&&(u=c.fragments[f],d=u,this.isobmffReader.pos=u.moofOffset+u.moofSize);this.isobmffReader.posp.moofOffset);if(b===-1){this.isobmffReader.pos=m;let p=await this.readFragment();u&&(u.nextFragment=p),u=p}else{let p=this.fragments[b];u&&(u.nextFragment=p),u=p}}this.isobmffReader.pos=m+g.totalSize}u&&u.trackData.has(s)&&(d=u)}if(d){let m=d.trackData.get(s);l(m.startTimestampIsFinal),kr(o,m.endTimestamp)}o.startTimestampIsFinal=!0}return n}readContiguousBoxes(e){let r=this.isobmffReader.pos;for(;this.isobmffReader.pos-rf.every((m,g)=>m===u[g]));d===-1?n.rotation=0:n.rotation=90*d}break;case"mdhd":{let n=this.currentTrack;l(n);let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3,s===0?(this.isobmffReader.pos+=8,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU32()):s===1&&(this.isobmffReader.pos+=16,n.timescale=this.isobmffReader.readU32(),n.durationInTimescale=this.isobmffReader.readU64())}break;case"hdlr":{let n=this.currentTrack;l(n),this.isobmffReader.pos+=8;let s=this.isobmffReader.readAscii(4);s==="vide"?n.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null}:s==="soun"&&(n.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null})}break;case"stbl":{let n=this.currentTrack;l(n),n.sampleTableOffset=e,this.readContiguousBoxes(r.contentSize)}break;case"stsd":{let n=this.currentTrack;if(l(n),n.info===null||n.sampleTable)break;let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=this.isobmffReader.readU32();for(let c=0;c0){if(d===1)this.isobmffReader.pos+=4*4;else if(d===2){this.isobmffReader.pos+=4,m=this.isobmffReader.readF64(),f=this.isobmffReader.readU32(),this.isobmffReader.pos+=4;let g=this.isobmffReader.readU32(),b=this.isobmffReader.readU32(),p=this.isobmffReader.readU32(),k=this.isobmffReader.readU32()}}n.info.numberOfChannels=f,n.info.sampleRate=m,this.readContiguousBoxes(e+u.totalSize-this.isobmffReader.pos)}}}break;case"avcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"hvcC":{let n=this.currentTrack;l(n&&n.info),n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+r.contentSize)}break;case"colr":{let n=this.currentTrack;if(l(n&&n.info?.type==="video"),this.isobmffReader.readAscii(4)!=="nclx")break;let o=this.isobmffReader.readU16(),c=this.isobmffReader.readU16(),u=this.isobmffReader.readU16(),d=!!(this.isobmffReader.readU8()&128);n.info.colorSpace={primaries:Pt[o],transfer:zt[c],matrix:Ut[u],fullRange:d}}break;case"wave":r.totalSize>8&&this.readContiguousBoxes(r.contentSize);break;case"esds":{let n=this.currentTrack;l(n&&n.info),this.isobmffReader.pos+=4;let s=this.isobmffReader.readU8();l(s===3),this.isobmffReader.readIsomVariableInteger(),this.isobmffReader.pos+=2;let o=this.isobmffReader.readU8(),c=(o&128)!==0,u=(o&64)!==0,d=(o&32)!==0;if(c&&(this.isobmffReader.pos+=2),u){let p=this.isobmffReader.readU8();this.isobmffReader.pos+=p}d&&(this.isobmffReader.pos+=2);let f=this.isobmffReader.readU8();l(f===4),this.isobmffReader.readIsomVariableInteger();let m=this.isobmffReader.readU8();l(m===64),this.isobmffReader.pos+=12;let g=this.isobmffReader.readU8();l(g===5);let b=this.isobmffReader.readIsomVariableInteger();n.info.codecDescription=this.isobmffReader.readRange(this.isobmffReader.pos,this.isobmffReader.pos+b)}break;case"stts":{let n=this.currentTrack;if(l(n),!n.sampleTable)break;this.isobmffReader.pos+=4;let s=this.isobmffReader.readU32(),o=0,c=0;for(let u=0;ux.id===s);if(!o)break;o.fragmentLookupTable=[];let c=this.isobmffReader.readU32(),u=(c&48)>>4,d=(c&12)>>2,f=c&3,m=this.isobmffReader,g=[m.readU8.bind(m),m.readU16.bind(m),m.readU24.bind(m),m.readU32.bind(m)],b=g[u],p=g[d],k=g[f],T=this.isobmffReader.readU32();for(let x=0;xs.moofOffset);this.fragments.splice(n+1,0,this.currentFragment);for(let[,s]of this.currentFragment.trackData){let o=s.samples[0],c=F(s.samples);this.currentFragment.dataStart=Math.min(this.currentFragment.dataStart,o.byteOffset),this.currentFragment.dataEnd=Math.max(this.currentFragment.dataEnd,c.byteOffset+c.byteSize)}this.currentFragment=null}break;case"traf":if(l(this.currentFragment),this.readContiguousBoxes(r.contentSize),this.currentTrack){let n=this.currentFragment.trackData.get(this.currentTrack.id);if(n){let s=E(this.currentTrack.fragments,this.currentFragment.moofOffset,c=>c.moofOffset);this.currentTrack.fragments.splice(s+1,0,this.currentFragment);let{currentFragmentState:o}=this.currentTrack;l(o),o.startTimestamp!==null&&(kr(n,o.startTimestamp),n.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{l(this.currentFragment),this.isobmffReader.pos+=1;let n=this.isobmffReader.readU24(),s=!!(n&1),o=!!(n&2),c=!!(n&8),u=!!(n&16),d=!!(n&32),f=!!(n&65536),m=!!(n&131072),g=this.isobmffReader.readU32(),b=this.tracks.find(k=>k.id===g);if(!b)break;let p=this.fragmentTrackDefaults.find(k=>k.trackId===g);this.currentTrack=b,b.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:p?.defaultSampleDescriptionIndex??null,defaultSampleDuration:p?.defaultSampleDuration??null,defaultSampleSize:p?.defaultSampleSize??null,defaultSampleFlags:p?.defaultSampleFlags??null,startTimestamp:null},s?b.currentFragmentState.baseDataOffset=this.isobmffReader.readU64():m&&(b.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),o&&(b.currentFragmentState.sampleDescriptionIndex=this.isobmffReader.readU32()),c&&(b.currentFragmentState.defaultSampleDuration=this.isobmffReader.readU32()),u&&(b.currentFragmentState.defaultSampleSize=this.isobmffReader.readU32()),d&&(b.currentFragmentState.defaultSampleFlags=this.isobmffReader.readU32()),f&&(b.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let n=this.currentTrack;if(!n)break;l(n.currentFragmentState);let s=this.isobmffReader.readU8();this.isobmffReader.pos+=3;let o=s===0?this.isobmffReader.readU32():this.isobmffReader.readU64();n.currentFragmentState.startTimestamp=o}break;case"trun":{let n=this.currentTrack;if(!n)break;if(l(this.currentFragment),l(n.currentFragmentState),this.currentFragment.trackData.has(n.id))throw new Error("Can't have two trun boxes for the same track in one fragment.");let s=this.isobmffReader.readU8(),o=this.isobmffReader.readU24(),c=!!(o&1),u=!!(o&4),d=!!(o&256),f=!!(o&512),m=!!(o&1024),g=!!(o&2048),b=this.isobmffReader.readU32(),p=n.currentFragmentState.baseDataOffset;c&&(p+=this.isobmffReader.readI32());let k=null;u&&(k=this.isobmffReader.readU32());let T=p;if(b===0){this.currentFragment.implicitBaseDataOffset=T;break}let x=0,C={startTimestamp:0,endTimestamp:0,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(n.id,C);for(let I=0;I({presentationTimestamp:I.presentationTimestamp,sampleIndex:R})).sort((I,R)=>I.presentationTimestamp-R.presentationTimestamp);let O=C.samples[C.presentationTimestamps[0].sampleIndex],_=C.samples[F(C.presentationTimestamps).sampleIndex];C.startTimestamp=O.presentationTimestamp,C.endTimestamp=_.presentationTimestamp+_.duration,this.currentFragment.implicitBaseDataOffset=T}break}this.isobmffReader.pos=a}},je=class{constructor(t){this.internalTrack=t;this.chunkToSampleIndex=new WeakMap;this.chunkToFragmentLocation=new WeakMap}getCodec(){throw new Error("Not implemented on base class.")}async computeDuration(){let e=(await this.getChunk(1/0,{metadataOnly:!0}))?.timestamp;return e?e/1e6:0}async getFirstChunk(t){return this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(()=>{let e=this.internalTrack.fragments[0];return{fragmentIndex:e?0:-1,sampleIndex:e?0:-1,correctSampleFound:!!e}},0,1/0,t):this.fetchChunkForSampleIndex(0,t)}roundToMicrosecond(t){return(Math.floor(t*1e6)+.99999999)/1e6}async getChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findSampleInFragmentsForTimestamp(r),r,r,e);{let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=br(a,r);return this.fetchChunkForSampleIndex(n,e)}}async getNextChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let a=this.chunkToFragmentLocation.get(t);if(a===void 0)throw new Error("Chunk was not created from this track.");let n=a.fragment.trackData.get(this.internalTrack.id),s=n.samples[a.sampleIndex],o=Q(this.internalTrack.fragments,a.fragment.moofOffset,c=>c.moofOffset);return l(o!==-1),this.performFragmentedLookup(()=>{if(a.sampleIndex+1f.moofOffset);return l(d!==-1),{fragmentIndex:d,sampleIndex:0,correctSampleFound:!0}}return{fragmentIndex:o,sampleIndex:-1,correctSampleFound:!1}}},s.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");return this.fetchChunkForSampleIndex(r+1,e)}async getKeyChunk(t,e){t=this.roundToMicrosecond(t);let r=t*this.internalTrack.timescale;if(this.internalTrack.demuxer.isFragmented)return this.performFragmentedLookup(()=>this.findKeySampleInFragmentsForTimestamp(r),r,r,e);let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=br(a,r),s=n===-1?-1:Ii(a,n);return this.fetchChunkForSampleIndex(s,e)}async getNextKeyChunk(t,e){if(this.internalTrack.demuxer.isFragmented){let s=this.chunkToFragmentLocation.get(t);if(s===void 0)throw new Error("Chunk was not created from this track.");let o=s.fragment.trackData.get(this.internalTrack.id),c=o.samples[s.sampleIndex],u=Q(this.internalTrack.fragments,s.fragment.moofOffset,d=>d.moofOffset);return l(u!==-1),this.performFragmentedLookup(()=>{let d=o.samples.findIndex((f,m)=>f.isKeyFrame&&m>s.sampleIndex);if(d!==-1)return{fragmentIndex:u,sampleIndex:d,correctSampleFound:!0};{let f=s.fragment;for(;f.nextFragment;){f=f.nextFragment;let m=f.trackData.get(this.internalTrack.id);if(m){let g=Q(this.internalTrack.fragments,f.moofOffset,p=>p.moofOffset);l(g!==-1);let b=m.samples.findIndex(p=>p.isKeyFrame);if(b===-1)throw new Error("Not supported: Fragment does not contain key sample.");return{fragmentIndex:g,sampleIndex:b,correctSampleFound:!0}}}return{fragmentIndex:u,sampleIndex:-1,correctSampleFound:!1}}},c.presentationTimestamp,1/0,e)}let r=this.chunkToSampleIndex.get(t);if(r===void 0)throw new Error("Chunk was not created from this track.");let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Ei(a,r);return this.fetchChunkForSampleIndex(n,e)}async fetchChunkForSampleIndex(t,e){if(t===-1)return null;let r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Ai(r,t);if(!a)return null;let n;e.metadataOnly?n=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(a.chunkOffset,a.chunkOffset+a.chunkSize),n=this.internalTrack.demuxer.chunkReader.readRange(a.sampleOffset,a.sampleOffset+a.sampleSize));let s=1e6*a.presentationTimestamp/this.internalTrack.timescale,o=1e6*a.duration/this.internalTrack.timescale,c=this.createChunk(n,s,o,a.isKeyFrame);return this.chunkToSampleIndex.set(c,t),c}async fetchChunkInFragment(t,e,r){if(e===-1)return null;let n=t.trackData.get(this.internalTrack.id).samples[e];l(n);let s;r.metadataOnly?s=new Uint8Array(0):(await this.internalTrack.demuxer.chunkReader.reader.loadRange(t.dataStart,t.dataEnd),s=this.internalTrack.demuxer.chunkReader.readRange(n.byteOffset,n.byteOffset+n.byteSize));let o=1e6*n.presentationTimestamp/this.internalTrack.timescale,c=1e6*n.duration/this.internalTrack.timescale,u=this.createChunk(s,o,c,n.isKeyFrame);return this.chunkToFragmentLocation.set(u,{fragment:t,sampleIndex:e}),u}findSampleInFragmentsForTimestamp(t){let e=E(this.internalTrack.fragments,t,n=>n.trackData.get(this.internalTrack.id).startTimestamp),r=-1,a=!1;if(e!==-1){let s=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=E(s.presentationTimestamps,t,c=>c.presentationTimestamp);l(o!==-1),r=s.presentationTimestamps[o].sampleIndex,a=tn.trackData.get(this.internalTrack.id).startTimestamp),r=-1,a=!1;if(e!==-1){let s=this.internalTrack.fragments[e].trackData.get(this.internalTrack.id),o=Ht(s.presentationTimestamps,u=>s.samples[u.sampleIndex].isKeyFrame&&u.presentationTimestamp<=t);if(o===-1)throw new Error("Not supported: Fragment does not begin with a key sample.");r=s.presentationTimestamps[o].sampleIndex,a=tT.timestamp);k!==-1&&(p=this.internalTrack.fragmentLookupTable[k])}if(o===-1)d.pos=p?.moofOffset??0;else{let k=this.internalTrack.fragments[o];!p||k.moofOffset>=k.moofOffset?(d.pos=k.moofOffset+k.moofSize,m=k):d.pos=p.moofOffset}for(;d.posr)break;if(m.nextFragment){d.pos=m.nextFragment.moofOffset+m.nextFragment.moofSize,m=m.nextFragment;continue}}await d.reader.loadRange(d.pos,d.pos+16);let k=d.pos,T=d.readBoxHeader();if(T.name==="moof"){let x=Q(n.fragments,k,C=>C.moofOffset);if(x===-1){d.pos=k;let C=await n.readFragment();m&&(m.nextFragment=C),m=C;let{fragmentIndex:O,sampleIndex:_,correctSampleFound:I}=t();if(I){let R=this.internalTrack.fragments[O];return this.fetchChunkInFragment(R,_,a)}O!==-1&&(g=O,b=_)}else{let C=n.fragments[x];m&&(m.nextFragment=C),m=C}}d.pos=k+T.totalSize}if(g!==-1){let k=this.internalTrack.fragments[g];return this.fetchChunkInFragment(k,b,a)}return null}finally{s()}}},Et=class extends je{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getCodedWidth(){return this.internalTrack.info.width}async getCodedHeight(){return this.internalTrack.info.height}async getRotation(){return this.internalTrack.rotation}async getDecoderConfig(){return{codec:or(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}}createChunk(t,e,r,a){return new EncodedVideoChunk({data:t,timestamp:e,duration:r,type:a?"key":"delta"})}},Rt=class extends je{constructor(t){super(t),this.internalTrack=t}async getCodec(){return this.internalTrack.info.codec}async getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}async getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return{codec:ur(this.internalTrack.info.codec,this.internalTrack.info.codecDescription),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}}createChunk(t,e,r,a){return new EncodedAudioChunk({data:t,timestamp:e,duration:r,type:a?"key":"delta"})}},br=(i,t)=>{let e=E(i.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:i.presentationTimestamps[e].sampleIndex},Ai=(i,t)=>{let e=E(i.sampleTimingEntries,t,p=>p.startIndex),r=i.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,s=E(i.sampleCompositionTimeOffsets,t,p=>p.startIndex),o=i.sampleCompositionTimeOffsets[s];o&&(n+=o.offset);let c=i.sampleSizes[Math.min(t,i.sampleSizes.length-1)],u=E(i.sampleToChunk,t,p=>p.startSampleIndex),d=i.sampleToChunk[u];l(d);let f=d.startChunkIndex+Math.floor((t-d.startSampleIndex)/d.samplesPerChunk),m=i.chunkOffsets[f],g=0,b=m;if(i.sampleSizes.length===1)b+=c*(t-d.startSampleIndex),g+=c*d.samplesPerChunk;else{let p=d.startSampleIndex+(f-d.startChunkIndex)*d.samplesPerChunk;for(let k=p;kp)!==-1:!0}},Ii=(i,t)=>{if(!i.keySampleIndices)return t;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e]??-1},Ei=(i,t)=>{if(!i.keySampleIndices)return t+1;let e=E(i.keySampleIndices,t,r=>r);return i.keySampleIndices[e+1]??-1},kr=(i,t)=>{i.startTimestamp+=t,i.endTimestamp+=t;for(let e of i.samples)e.presentationTimestamp+=t;for(let e of i.presentationTimestamps)e.presentationTimestamp+=t};var ae=class{},qe=class extends ae{async _canReadInput(t){if(await t._mainReader.source._getSize()<8)return!1;let r=new ne(t._mainReader);return r.pos=4,r.readAscii(4)==="ftyp"}_createDemuxer(t){return new Ke(t)}},Xe=class extends ae{async _canReadInput(){return!1}_createDemuxer(){throw new Error("Not implemented")}},Ge=new qe,Ri=Ge,Oi=Ge,Ot=new Xe,gr=Ot,Fi=Ot,Vi=[Ge,gr];var Ft=class{constructor(t){this._demuxerPromise=null;this._format=null;if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!Array.isArray(t.formats)||t.formats.some(e=>!(e instanceof ae)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(t.source instanceof X))throw new TypeError("options.source must be a Source.");this._formats=t.formats,this._source=t.source,this._mainReader=new pe(t.source)}_getDemuxer(){return this._demuxerPromise??=(async()=>{await this._mainReader.loadRange(0,4096);for(let t of this._formats)if(await t._canReadInput(this))return this._format=t,t._createDemuxer(this);throw new Error("Input has an unrecognizable format.")})()}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async computeDuration(){return(await this._getDemuxer()).computeDuration()}async getTracks(){return(await this._getDemuxer()).getTracks()}async getVideoTracks(){return(await this.getTracks()).filter(e=>e.isVideoTrack())}async getPrimaryVideoTrack(){return(await this.getTracks()).find(e=>e.isVideoTrack())??null}async getAudioTracks(){return(await this.getTracks()).filter(e=>e.isAudioTrack())}async getPrimaryAudioTrack(){return(await this.getTracks()).find(e=>e.isAudioTrack())??null}async getMimeType(){return(await this._getDemuxer()).getMimeType()}};var L=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.metadataOnly!==void 0&&typeof i.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.")},U=i=>{if(typeof i!="number"||Number.isNaN(i))throw new TypeError("timestamp must be a number.")},_e=class{async*chunks(t,e=1/0){let r=[],{promise:a,resolve:n}=M(),{promise:s,resolve:o}=M(),c=!1,u=null,d=[],f=()=>Math.max(2,d.length);(async()=>{let m=t??await this.getFirstChunk();for(;m&&!c&&!(m.timestamp/1e6>=e);){if(r.length>f()){({promise:s,resolve:o}=M()),await s;continue}r.push(m),n(),{promise:a,resolve:n}=M(),m=await this.getNextChunk(m)}c=!0,n()})().catch(m=>{u||(u=m,n())});try{for(;;){if(u)throw u;if(r.length>0){yield r.shift();let m=performance.now();for(d.push(m);d.length>0&&m-d[0]>=1e3;)d.shift();o()}else if(!c)await a;else break}}finally{c=!0,o()}}},Ae=class{_duplicateFrame(t){return structuredClone(t)}async*mediaFramesAtTimestamps(t){Qt(t);let e=Lt(t),r=[],a=8,n=[],{promise:s,resolve:o}=M(),{promise:c,resolve:u}=M(),d=!1,f=!1,m=null,g=null,b=T=>{n.push(T),o(),{promise:s,resolve:o}=M()},p=new Error,k=await this._createDecoder(T=>{if(u(),f){T.close();return}let x=!1;for(;r.length>0&&r[0]===T.timestamp;)b(this._duplicateFrame(T)),r.shift(),x=!0;x?(g?.close(),g=T):T.close()},T=>{m||(T.stack=p.stack,m=T,o())});(async()=>{let T=this._createChunkDrain(),x=null,C=null;for await(let O of e){for(U(O);n.length+k.decodeQueueSize>a;)({promise:c,resolve:u}=M()),await c;if(f)break;let _=await T.getChunk(O);if(!_){b(null);continue}let I=await T.getKeyChunk(O);if(!I){b(null);continue}for(r.push(_.timestamp),x&&I.timestamp===x.timestamp&&_.timestamp>=C.timestamp?(l(C),_.timestamp===C.timestamp&&r.length===1&&(g&&b(this._duplicateFrame(g)),r.shift())):(x=I,C=I,k.decode(I));C.timestamp!==_.timestamp;){let R=await T.getNextChunk(C);l(R),C=R,k.decode(R)}k.decodeQueueSize>=10&&await new Promise(R=>k.addEventListener("dequeue",R,{once:!0}))}await k.flush(),k.close(),d=!0,o()})().catch(T=>{m||(m=T,o())});try{for(;;){if(m)throw m;if(n.length>0){let T=n.shift();l(T!==void 0),yield T,u()}else if(!d)await s;else break}}finally{f=!0,u();for(let T of n)T?.close();g?.close()}}async*mediaFramesInRange(t=0,e=1/0){U(t),U(e);let r=8,a=[],n=!1,s=null,{promise:o,resolve:c}=M(),{promise:u,resolve:d}=M(),f=!1,m=!1,g=null,b=new Error,p=await this._createDecoder(x=>{d();let C=x.timestamp/1e6;if(C>=e&&(m=!0),m){x.close();return}s&&(C>t?(a.push(s),n=!0):s.close()),C>=t&&(a.push(x),n=!0),s=n?null:x,a.length>0&&(c(),{promise:o,resolve:c}=M())},x=>{g||(x.stack=b.stack,g=x,c())}),k=this._createChunkDrain(),T=await k.getKeyChunk(t)??await k.getFirstChunk();if(T){(async()=>{let x=T,C=1/0;if(e<1/0){let _=await k.getChunk(e),I=_?_.type==="key"&&_.timestamp/1e6===e?_:await k.getNextKeyChunk(_):null;I&&(C=I.timestamp/1e6)}let O=k.chunks(T,C);for(await O.next();x&&!m;){if(a.length+p.decodeQueueSize>r){({promise:u,resolve:d}=M()),await u;continue}p.decode(x);let _=await O.next();if(_.done)break;x=_.value}await O.return(),await p.flush(),p.close(),!n&&s&&a.push(s),f=!0,c()})().catch(x=>{g||(g=x,c())});try{for(;;){if(g)throw g;if(a.length>0)yield a.shift(),d();else if(!f)await o;else break}}finally{m=!0,d();for(let x of a)x.close()}}}},Ye=class extends _e{constructor(t){if(!(t instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._videoTrack=t}getFirstChunk(t={}){return L(t),this._videoTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return U(t),L(e),this._videoTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return L(e),this._videoTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return U(t),L(e),this._videoTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return L(e),this._videoTrack._backing.getNextKeyChunk(t,e)}},Ze=class extends Ae{constructor(e){if(!(e instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");super();this._decoderConfig=null;this._videoTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._videoTrack.getDecoderConfig();let a=new VideoDecoder({output:e,error:r});return a.configure(this._decoderConfig),a}_createChunkDrain(){return new Ye(this._videoTrack)}async getFrame(e){U(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}frames(e=0,r=1/0){return this.mediaFramesInRange(e,r)}framesAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},Vt=class{constructor(t,e){if(!(t instanceof W))throw new TypeError("videoTrack must be an InputVideoTrack.");if(e&&typeof e!="object")throw new TypeError("dimensions, when defined, must be an object.");if(e&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("dimensions.width must be a positive integer.");if(e&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("dimensions.height must be a positive integer.");this._videoTrack=t,this._dimensions=e,this._videoFrameDrain=new Ze(t)}async _videoFrameToWrappedCanvas(t){let e=this._dimensions?.width??await this._videoTrack.getDisplayWidth(),r=this._dimensions?.height??await this._videoTrack.getDisplayHeight(),a=await this._videoTrack.getRotation(),n=document.createElement("canvas");n.width=e,n.height=r;let s=n.getContext("2d",{alpha:!1});l(s),s.translate(e/2,r/2),s.rotate(a*Math.PI/180),s.translate(-e/2,-r/2);let[o,c]=a%180===0?[e,r]:[r,e];s.drawImage(t,(e-o)/2,(r-c)/2,o,c);let u={canvas:n,timestamp:t.timestamp/1e6,duration:(t.duration??0)/1e6};return t.close(),u}async getCanvas(t){U(t);let e=await this._videoFrameDrain.getFrame(t);return e&&this._videoFrameToWrappedCanvas(e)}async*canvases(t=0,e=1/0){for await(let r of this._videoFrameDrain.frames(t,e))yield this._videoFrameToWrappedCanvas(r)}async*canvasesAtTimestamps(t){for await(let e of this._videoFrameDrain.framesAtTimestamps(t))yield e&&this._videoFrameToWrappedCanvas(e)}},Je=class extends _e{constructor(t){if(!(t instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._audioTrack=t}getFirstChunk(t={}){return L(t),this._audioTrack._backing.getFirstChunk(t)}getChunk(t,e={}){return U(t),L(e),this._audioTrack._backing.getChunk(t,e)}getNextChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return L(e),this._audioTrack._backing.getNextChunk(t,e)}getKeyChunk(t,e={}){return U(t),L(e),this._audioTrack._backing.getKeyChunk(t,e)}getNextKeyChunk(t,e={}){if(!(t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return L(e),this._audioTrack._backing.getNextKeyChunk(t,e)}},et=class extends Ae{constructor(e){if(!(e instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");super();this._decoderConfig=null;this._audioTrack=e}async _createDecoder(e,r){this._decoderConfig??=await this._audioTrack.getDecoderConfig();let a=new AudioDecoder({output:e,error:r});return a.configure(this._decoderConfig),a}_createChunkDrain(){return new Je(this._audioTrack)}async getData(e){U(e);for await(let r of this.mediaFramesAtTimestamps([e]))return r;throw new Error("Internal error: Iterator returned nothing.")}data(e=0,r=1/0){return this.mediaFramesInRange(e,r)}dataAtTimestamps(e){return this.mediaFramesAtTimestamps(e)}},Mt=class{constructor(t){if(!(t instanceof H))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioDataDrain=new et(t)}_audioDataToWrappedArrayBuffer(t){let e=new AudioBuffer({numberOfChannels:t.numberOfChannels,length:t.numberOfFrames,sampleRate:t.sampleRate}),r=new Float32Array(t.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let s=0;s { if (config.latencyMode !== void 0 && !["quality", "realtime"].includes(config.latencyMode)) { throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'."); } + if (config.onEncodingError !== void 0 && typeof config.onEncodingError !== "function") { + throw new TypeError("config.onEncodingError, when provided, must be a function."); + } }; var VideoEncoderWrapper = class { constructor(source, codecConfig) { @@ -3559,7 +3558,7 @@ var VideoEncoderWrapper = class { } this.encoder = new VideoEncoder({ output: (chunk, meta) => void this.muxer.addEncodedVideoChunk(this.source._connectedTrack, chunk, meta), - error: (error) => console.error("Video encode error:", error) + error: this.codecConfig.onEncodingError ?? ((error) => console.error("VideoEncoder error:", error)) }); this.encoder.configure({ codec: buildVideoCodecString( @@ -3707,6 +3706,9 @@ var validateAudioCodecConfig = (config) => { if (!Number.isInteger(config.bitrate) || config.bitrate <= 0) { throw new TypeError("config.bitrate must be a positive integer."); } + if (config.onEncodingError !== void 0 && typeof config.onEncodingError !== "function") { + throw new TypeError("config.onEncodingError, when provided, must be a function."); + } }; var AudioEncoderWrapper = class { constructor(source, codecConfig) { @@ -3744,7 +3746,7 @@ var AudioEncoderWrapper = class { } this.encoder = new AudioEncoder({ output: (chunk, meta) => void this.muxer.addEncodedAudioChunk(this.source._connectedTrack, chunk, meta), - error: (error) => console.error("Audio encode error:", error) + error: this.codecConfig.onEncodingError ?? ((error) => console.error("AudioEncoder error:", error)) }); this.encoder.configure({ codec: buildAudioCodecString(this.codecConfig.codec, audioData.numberOfChannels, audioData.sampleRate), @@ -3871,8 +3873,7 @@ var TextSubtitleSource = class extends SubtitleSource { super(codec); this._parser = new SubtitleParser({ codec, - output: (cue, metadata) => this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack, cue, metadata), - error: (error) => console.error("Subtitle parse error:", error) + output: (cue, metadata) => this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack, cue, metadata) }); } digest(text) { diff --git a/src/media-source.ts b/src/media-source.ts index 59d77f5..a6d34d5 100644 --- a/src/media-source.ts +++ b/src/media-source.ts @@ -113,6 +113,7 @@ export type VideoCodecConfig = { codec: VideoCodec; bitrate: number; latencyMode?: VideoEncoderConfig['latencyMode']; + onEncodingError?: (error: Error) => void; }; const validateVideoCodecConfig = (config: VideoCodecConfig) => { @@ -128,6 +129,9 @@ const validateVideoCodecConfig = (config: VideoCodecConfig) => { if (config.latencyMode !== undefined && !['quality', 'realtime'].includes(config.latencyMode)) { throw new TypeError('config.latencyMode, when provided, must be \'quality\' or \'realtime\'.'); } + if (config.onEncodingError !== undefined && typeof config.onEncodingError !== 'function') { + throw new TypeError('config.onEncodingError, when provided, must be a function.'); + } }; class VideoEncoderWrapper { @@ -186,7 +190,7 @@ class VideoEncoderWrapper { this.encoder = new VideoEncoder({ output: (chunk, meta) => void this.muxer!.addEncodedVideoChunk(this.source._connectedTrack!, chunk, meta), - error: error => console.error('Video encode error:', error), + error: this.codecConfig.onEncodingError ?? (error => console.error('VideoEncoder error:', error)), }); this.encoder.configure({ @@ -382,6 +386,7 @@ export class EncodedAudioChunkSource extends AudioSource { export type AudioCodecConfig = { codec: AudioCodec; bitrate: number; + onEncodingError?: (error: Error) => void; }; const validateAudioCodecConfig = (config: AudioCodecConfig) => { @@ -394,6 +399,9 @@ const validateAudioCodecConfig = (config: AudioCodecConfig) => { if (!Number.isInteger(config.bitrate) || config.bitrate <= 0) { throw new TypeError('config.bitrate must be a positive integer.'); } + if (config.onEncodingError !== undefined && typeof config.onEncodingError !== 'function') { + throw new TypeError('config.onEncodingError, when provided, must be a function.'); + } }; class AudioEncoderWrapper { @@ -445,7 +453,7 @@ class AudioEncoderWrapper { this.encoder = new AudioEncoder({ output: (chunk, meta) => void this.muxer!.addEncodedAudioChunk(this.source._connectedTrack!, chunk, meta), - error: error => console.error('Audio encode error:', error), + error: this.codecConfig.onEncodingError ?? (error => console.error('AudioEncoder error:', error)), }); this.encoder.configure({ @@ -629,7 +637,6 @@ export class TextSubtitleSource extends SubtitleSource { codec, output: (cue, metadata) => this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack, cue, metadata), - error: error => console.error('Subtitle parse error:', error), }); } diff --git a/src/subtitles.ts b/src/subtitles.ts index 1bee395..3c5683c 100644 --- a/src/subtitles.ts +++ b/src/subtitles.ts @@ -18,7 +18,6 @@ export type SubtitleMetadata = { type SubtitleParserOptions = { codec: 'webvtt'; output: (cue: SubtitleCue, metadata: SubtitleMetadata) => unknown; - error: (error: Error) => unknown; }; const cueBlockHeaderRegex = /(?:(.+?)\n)?((?:\d{2}:)?\d{2}:\d{2}.\d{3})\s+-->\s+((?:\d{2}:)?\d{2}:\d{2}.\d{3})/g; @@ -42,18 +41,14 @@ export class SubtitleParser { if (!this.preambleText) { if (!preambleStartRegex.test(text)) { - const error = new Error('WebVTT preamble incorrect.'); - this.options.error(error); - throw error; + throw new Error('WebVTT preamble incorrect.'); } match = cueBlockHeaderRegex.exec(text); const preamble = text.slice(0, match?.index ?? text.length).trimEnd(); if (!preamble) { - const error = new Error('No WebVTT preamble provided.'); - this.options.error(error); - throw error; + throw new Error('No WebVTT preamble provided.'); } this.preambleText = preamble;