From 3ae891842f0a6aa78aaed8dd9f05585010eb84b4 Mon Sep 17 00:00:00 2001 From: Vanilagy <1696106+Vanilagy@users.noreply.github.com> Date: Sat, 30 Nov 2024 19:30:43 +0100 Subject: [PATCH] Add codec-specific encoder configs --- dev/index.html | 8 +++---- dist/metamuxer.js | 46 +++++++++++++++++++++++++++++++++--- dist/metamuxer.min.js | 8 +++---- dist/metamuxer.min.mjs | 8 +++---- dist/metamuxer.mjs | 46 +++++++++++++++++++++++++++++++++--- src/codec.ts | 42 +++++++++++++++++++++++++++++--- src/isobmff/isobmff-boxes.ts | 2 +- src/source.ts | 4 +++- 8 files changed, 141 insertions(+), 23 deletions(-) diff --git a/dev/index.html b/dev/index.html index e534e57..f4aeb59 100644 --- a/dev/index.html +++ b/dev/index.html @@ -32,8 +32,8 @@ } const canvas = document.createElement('canvas'); - canvas.width = 3840; - canvas.height = 3840; + canvas.width = 1280; + canvas.height = 720; const context = canvas.getContext('2d'); let format = new Metamuxer.WebMOutputFormat({ streamable: true }); @@ -80,11 +80,11 @@ */ let videoSource = new Metamuxer.CanvasSource(canvas, { - codec: 'av1', + codec: 'avc', bitrate: 1e6 }); let audioSource = new Metamuxer.AudioBufferSource({ - codec: 'aac', + codec: 'opus', bitrate: 128e3, }); let subtitleSource = new Metamuxer.TextSubtitleSource('webvtt'); diff --git a/dist/metamuxer.js b/dist/metamuxer.js index 4c328d4..5837f89 100644 --- a/dist/metamuxer.js +++ b/dist/metamuxer.js @@ -817,7 +817,7 @@ var Metamuxer = (() => { let gain = 0; const description = trackData.info.decoderConfig?.description; if (description) { - assert(description.byteLength < 18); + assert(description.byteLength >= 18); const view2 = ArrayBuffer.isView(description) ? new DataView(description.buffer, description.byteOffset, description.byteLength) : new DataView(description); preskip = view2.getUint16(10, true); gain = view2.getInt16(14, true); @@ -1684,6 +1684,41 @@ var Metamuxer = (() => { } throw new TypeError(`Unhandled codec '${codec}'.`); }; + var getVideoEncoderConfigExtension = (codec) => { + if (codec === "avc") { + return { + avc: { + format: "avc" + // Ensure the format is not Annex B + } + }; + } else if (codec === "hevc") { + return { + hevc: { + format: "hevc" + // Ensure the format is not Annex B + } + }; + } + return {}; + }; + var getAudioEncoderConfigExtension = (codec) => { + if (codec === "aac") { + return { + aac: { + format: "aac" + // Ensure the format is not ADTS + } + }; + } else if (codec === "opus") { + return { + opus: { + format: "opus" + } + }; + } + return {}; + }; var validateVideoChunkMetadata = (metadata) => { if (!metadata) { throw new TypeError("Video chunk metadata must be provided."); @@ -1769,6 +1804,9 @@ var Metamuxer = (() => { throw new TypeError("Audio chunk metadata decoder configuration description, when defined, must be an ArrayBuffer or an ArrayBuffer view."); } } + if (metadata.decoderConfig.codec.startsWith("mp4a") && !metadata.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 (metadata.decoderConfig.codec === "opus" && metadata.decoderConfig.description && metadata.decoderConfig.description.byteLength < 18) { throw new TypeError("Invalid decoder description provided for Opus; must be at least 18 bytes long."); } @@ -3259,7 +3297,8 @@ ${cue.notes ?? ""}`; height: videoFrame.codedHeight, bitrate: this.codecConfig.bitrate, framerate: this.source._connectedTrack?.metadata.frameRate, - latencyMode: this.codecConfig.latencyMode + latencyMode: this.codecConfig.latencyMode, + ...getVideoEncoderConfigExtension(this.codecConfig.codec) }); assert(this.source._connectedTrack); this.muxer = this.source._connectedTrack.output._muxer; @@ -3434,7 +3473,8 @@ ${cue.notes ?? 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i>=2&&e<=24e3?"mp4a.40.29":e<=24e3?"mp4a.40.5":"mp4a.40.2";if(t==="opus")return"opus";if(t==="vorbis")return"vorbis";throw new TypeError(`Unhandled codec '${t}'.`)},be=t=>{if(!t)throw new TypeError("Video chunk metadata must be provided.");if(typeof t!="object")throw new TypeError("Video chunk metadata must be an object.");if(!t.decoderConfig)throw new TypeError("Video chunk metadata must include a decoder configuration.");if(typeof t.decoderConfig!="object")throw new TypeError("Video chunk metadata decoder configuration must be an object.");if(typeof t.decoderConfig.codec!="string")throw new TypeError("Video chunk metadata decoder configuration must specify a codec string.");if(!Number.isInteger(t.decoderConfig.codedWidth)||t.decoderConfig.codedWidth<=0)throw new TypeError("Video chunk metadata decoder configuration must specify a valid codedWidth (positive integer).");if(!Number.isInteger(t.decoderConfig.codedHeight)||t.decoderConfig.codedHeight<=0)throw new TypeError("Video chunk 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t!="object")throw new TypeError("Subtitle metadata must be an object.");if(!t.config)throw new TypeError("Subtitle metadata must include a config object.");if(typeof t.config!="object")throw new TypeError("Subtitle metadata config must be an object.");if(typeof t.config.description!="string")throw new TypeError("Subtitle metadata config description must be a string.")};var de=1e3,gr=2082844800,v=(t,i,e=!0)=>{let r=t*i;return e?Math.round(r):r},Te=class extends L{constructor(e,r){super(e);this.timestampsMustStartAtZero=!0;this.auxTarget=new K;this.auxWriter=this.auxTarget._createWriter();this.auxBoxWriter=new J(this.auxWriter);this.ftypSize=null;this.mdat=null;this.trackDatas=[];this.creationTime=Math.floor(Date.now()/1e3)+gr;this.finalizedChunks=[];this.nextFragmentNumber=1;this.writer=e._writer,this.boxWriter=new J(this.writer),this.fastStart=r._options.fastStart??(this.writer instanceof 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6:this.helperView.setUint8(s++,4|e/2**40&3),this.helperView.setUint8(s++,e/2**32|0),this.helperView.setUint8(s++,e>>24),this.helperView.setUint8(s++,e>>16),this.helperView.setUint8(s++,e>>8),this.helperView.setUint8(s++,e);break;default:throw new Error("Bad EBML VINT size "+r)}this.writer.write(this.helper.subarray(0,s))}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(),s=e.size===-1?1:e.size??4;e.size===-1?this.writeByte(255):this.writer.seek(this.writer.getPos()+s);let a=this.writer.getPos();if(this.dataOffsets.set(e,a),this.writeEBML(e.data),e.size!==-1){let o=this.writer.getPos()-a,n=this.writer.getPos();this.writer.seek(r),this.writeEBMLVarInt(o,s),this.writer.seek(n)}}else if(typeof e.data=="number"){let r=e.size??Fe(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 re)this.writeEBMLVarInt(4),this.writeFloat32(e.data.value);else if(e.data instanceof X)this.writeEBMLVarInt(8),this.writeFloat64(e.data.value);else if(e.data instanceof ie){let r=e.size??Ne(e.data.value);this.writeEBMLVarInt(r),this.writeSignedInt(e.data.value,r)}}}beforeTrackAdd(e){if(this.format instanceof D)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 D?"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]),s=new Uint8Array([22,84,174,107]),a={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:s},{id:21420,size:5,data:0}]}]};this.seekHead=a}createSegmentInfo(){let e={id:17545,data:new X(0)};this.segmentDuration=e;let r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:mt},{id:22337,data:mt},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:Sr[r.type]},{id:134,data:kr[r.track.source._codec]},...r.type==="video"?[r.info.decoderConfig.description?{id:25506,data:I(r.info.decoderConfig.description)}:null,r.track.metadata.frameRate?{id:2352003,data:1e9/r.track.metadata.frameRate}:null,{id:224,data:[{id:176,data:r.info.width},{id:186,data:r.info.height},(()=>{if(r.info.decoderConfig.colorSpace){let s=r.info.decoderConfig.colorSpace;return ne(s)?{id:21936,data:[{id:21937,data:$[s.matrix]},{id:21946,data:Q[s.transfer]},{id:21947,data:H[s.primaries]},{id:21945,data:[1,2][Number(s.fullRange)]}]}:null}return null})()]}]:[],...r.type==="audio"?[r.info.decoderConfig.description?{id:25506,data:I(r.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new re(r.info.sampleRate)},{id:159,data:r.info.numberOfChannels}]}]:[],...r.type==="subtitle"?[{id:25506,data:y.encode(r.info.config.description)}]:[]]})}createSegment(){let e={id:408125543,size:this.format._options.streamable?-1:ft,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 d(this.segment),this.dataOffsets.get(this.segment)}getVideoTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;be(r),d(r),d(r.decoderConfig),d(r.decoderConfig.codedWidth!==void 0),d(r.decoderConfig.codedHeight!==void 0);let a={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getAudioTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;xe(r),d(r),d(r.decoderConfig);let a={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getSubtitleTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;we(r),d(r),d(r.config);let a={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}async addEncodedVideoChunk(e,r,s){let a=await this.mutex.acquire();try{let o=this.getVideoTrackData(e,s),n=new Uint8Array(r.byteLength);r.copyTo(n);let u=this.validateAndNormalizeTimestamp(o.track,r.timestamp,r.type==="key"),c=this.createInternalChunk(n,u,(r.duration??0)/1e6,r.type);e.source._codec==="vp9"&&this.fixVP9ColorSpace(o,c),o.chunkQueue.push(c),await this.interleaveChunks()}finally{a()}}async addEncodedAudioChunk(e,r,s){let a=await this.mutex.acquire();try{let o=this.getAudioTrackData(e,s),n=new Uint8Array(r.byteLength);r.copyTo(n);let u=this.validateAndNormalizeTimestamp(o.track,r.timestamp,r.type==="key"),c=this.createInternalChunk(n,u,(r.duration??0)/1e6,r.type);o.chunkQueue.push(c),await this.interleaveChunks()}finally{a()}}async addSubtitleCue(e,r,s){let a=await this.mutex.acquire();try{let o=this.getSubtitleTrackData(e,s),n=this.validateAndNormalizeTimestamp(o.track,1e6*r.timestamp,!0),u=r.text,c=Math.floor(n*1e3);j.lastIndex=0,u=u.replace(j,M=>{let g=le(M.slice(1,-1))-c;return`<${ce(g)}>`});let m=y.encode(u),f=`${r.settings??""} ${r.identifier??""} -${r.notes??""}`,w=this.createInternalChunk(m,n,r.duration,"key",f.trim()?y.encode(f):null);o.chunkQueue.push(w),await this.interleaveChunks()}finally{a()}}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 a of this.trackDatas){if(a.chunkQueue.length===0&&!a.track.source._closed)break e;a.chunkQueue.length>0&&a.chunkQueue[0].timestamp=2&&s++;let c={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];Qe(r.data,s+0,s+3,c)}createInternalChunk(e,r,s,a,o=null){return{data:e,type:a,timestamp:r,duration:s,additions:o}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),a=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let w=f.chunkQueue[0];return w&&w.type==="key"});(!this.currentCluster||a&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let o=s-this.currentClusterMsTimestamp;if(o<0)return;if(o>=He)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${He} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${He} milliseconds.`);let u=new Uint8Array(4),c=new DataView(u.buffer);c.setUint8(0,128|e.track.id),c.setInt16(1,o,!1);let m=Math.floor(1e3*r.duration);if(m===0&&!r.additions){c.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[u,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[u,r.data]},r.type==="delta"?{id:251,data:new ie(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,m>0?{id:155,data:m}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+m),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:mt,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){d(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,mt),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;d(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(a=>({id:183,data:[{id:247,data:a.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(),d(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,dt),this.segmentDuration.data=new X(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 z=class{},ke=class extends z{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(i.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=i}_createMuxer(i){return new Te(i,this)}},se=class extends z{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.streamable!==void 0&&typeof i.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=i}_createMuxer(i){return new Ce(i,this)}},D=class extends se{};var G=["avc","hevc","vp8","vp9","av1"],Y=["aac","opus"],ge=["webvtt"],W=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)}},O=class extends W{constructor(e){super();this._connectedTrack=null;if(!G.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${G.join(", ")}.`);this._codec=e}},Se=class extends O{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,i,e)}},gr=5,Sr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!G.includes(t.codec))throw new TypeError(`Invalid video codec '${t.codec}'. Must be one of: ${G.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(t.latencyMode!==void 0&&["quality","realtime"].includes(t.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},ae=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;Sr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(i.codedWidth!==this.lastWidth||i.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${i.codedWidth}x${i.codedHeight}.`)}else this.lastWidth=i.codedWidth,this.lastHeight=i.codedHeight;this.ensureEncoder(i),d(this.encoder);let e=Math.floor(i.timestamp/1e6/gr);this.encoder.encode(i,{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(i){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:nt(this.codecConfig.codec,i.codedWidth,i.codedHeight,this.codecConfig.bitrate),width:i.codedWidth,height:i.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},ye=class extends O{constructor(i){super(i.codec),this._encoder=new ae(this,i)}digest(i){if(!(i instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},ve=class extends O{constructor(i,e){if(!(i instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new ae(this,e),this._canvas=i}digest(i,e=0){if(!Number.isFinite(i)||i<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*i),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},_e=class extends O{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 ae(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()}},E=class extends W{constructor(e){super();this._connectedTrack=null;if(!Y.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${Y.join(", ")}.`);this._codec=e}},Ae=class extends E{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,i,e)}},yr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!Y.includes(t.codec))throw new TypeError(`Invalid audio codec '${t.codec}'. Must be one of: ${Y.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},oe=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;yr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(i.numberOfChannels!==this.lastNumberOfChannels||i.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${i.numberOfChannels} channels at ${i.sampleRate} Hz.`)}else this.lastNumberOfChannels=i.numberOfChannels,this.lastSampleRate=i.sampleRate;this.ensureEncoder(i),d(this.encoder),this.encoder.encode(i),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(i){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:ut(this.codecConfig.codec,i.numberOfChannels,i.sampleRate),numberOfChannels:i.numberOfChannels,sampleRate:i.sampleRate,bitrate:this.codecConfig.bitrate}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Oe=class extends E{constructor(i){super(i.codec),this._encoder=new oe(this,i)}digest(i){if(!(i instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},Ee=class extends E{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new oe(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,a=e.length,o=new Float32Array(r*a);for(let c=0;c{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},R=class extends W{constructor(e){super();this._connectedTrack=null;if(!ge.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${ge.join(", ")}.`);this._codec=e}},Ve=class extends R{constructor(i){super(i),this._parser=new ue({codec:i,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(i){if(typeof i!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(i),this._connectedTrack.output._muxer.mutex.currentPromise}};var ze=class{constructor(i){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new N;if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(!(i.format instanceof z))throw new TypeError("options.format must be an OutputFormat.");if(!(i.target instanceof V))throw new TypeError("options.target must be a Target.");if(i.target._output)throw new Error("Target is already used for another output.");i.target._output=this,this._writer=i.target._createWriter(),this._muxer=i.format._createMuxer(this)}addVideoTrack(i,e={}){if(!(i instanceof O))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: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",i,e)}addAudioTrack(i,e={}){if(!(i instanceof E))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",i,e)}addSubtitleTrack(i,e={}){if(!(i instanceof R))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",i,e)}_addTrack(i,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let s={id:this._tracks.length+1,output:this,type:i,source:e,metadata:r};this._muxer.beforeTrackAdd(s),this._tracks.push(s),e._connectedTrack=s}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let i=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();i()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let i=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),i()}};return wt(vr);})(); +${r.notes??""}`,w=this.createInternalChunk(m,n,r.duration,"key",f.trim()?y.encode(f):null);o.chunkQueue.push(w),await this.interleaveChunks()}finally{a()}}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 a of this.trackDatas){if(a.chunkQueue.length===0&&!a.track.source._closed)break e;a.chunkQueue.length>0&&a.chunkQueue[0].timestamp=2&&s++;let c={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];Qe(r.data,s+0,s+3,c)}createInternalChunk(e,r,s,a,o=null){return{data:e,type:a,timestamp:r,duration:s,additions:o}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),a=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let w=f.chunkQueue[0];return w&&w.type==="key"});(!this.currentCluster||a&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let o=s-this.currentClusterMsTimestamp;if(o<0)return;if(o>=He)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${He} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${He} milliseconds.`);let u=new Uint8Array(4),c=new DataView(u.buffer);c.setUint8(0,128|e.track.id),c.setInt16(1,o,!1);let m=Math.floor(1e3*r.duration);if(m===0&&!r.additions){c.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[u,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[u,r.data]},r.type==="delta"?{id:251,data:new ie(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,m>0?{id:155,data:m}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+m),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:pt,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){d(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,pt),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;d(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(a=>({id:183,data:[{id:247,data:a.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(),d(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,ft),this.segmentDuration.data=new X(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 z=class{},ge=class extends z{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(i.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=i}_createMuxer(i){return new Te(i,this)}},se=class extends z{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.streamable!==void 0&&typeof i.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=i}_createMuxer(i){return new Ce(i,this)}},D=class extends se{};var G=["avc","hevc","vp8","vp9","av1"],Y=["aac","opus"],ke=["webvtt"],W=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)}},O=class extends W{constructor(e){super();this._connectedTrack=null;if(!G.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${G.join(", ")}.`);this._codec=e}},Se=class extends O{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,i,e)}},yr=5,vr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!G.includes(t.codec))throw new TypeError(`Invalid video codec '${t.codec}'. Must be one of: ${G.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(t.latencyMode!==void 0&&["quality","realtime"].includes(t.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},ae=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;vr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(i.codedWidth!==this.lastWidth||i.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${i.codedWidth}x${i.codedHeight}.`)}else this.lastWidth=i.codedWidth,this.lastHeight=i.codedHeight;this.ensureEncoder(i),d(this.encoder);let e=Math.floor(i.timestamp/1e6/yr);this.encoder.encode(i,{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(i){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:nt(this.codecConfig.codec,i.codedWidth,i.codedHeight,this.codecConfig.bitrate),width:i.codedWidth,height:i.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...lt(this.codecConfig.codec)}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},ye=class extends O{constructor(i){super(i.codec),this._encoder=new ae(this,i)}digest(i){if(!(i instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},ve=class extends O{constructor(i,e){if(!(i instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new ae(this,e),this._canvas=i}digest(i,e=0){if(!Number.isFinite(i)||i<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*i),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},Ae=class extends O{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 ae(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()}},E=class extends W{constructor(e){super();this._connectedTrack=null;if(!Y.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${Y.join(", ")}.`);this._codec=e}},_e=class extends E{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,i,e)}},Ar=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!Y.includes(t.codec))throw new TypeError(`Invalid audio codec '${t.codec}'. Must be one of: ${Y.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},oe=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;Ar(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(i.numberOfChannels!==this.lastNumberOfChannels||i.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${i.numberOfChannels} channels at ${i.sampleRate} Hz.`)}else this.lastNumberOfChannels=i.numberOfChannels,this.lastSampleRate=i.sampleRate;this.ensureEncoder(i),d(this.encoder),this.encoder.encode(i),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(i){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:ut(this.codecConfig.codec,i.numberOfChannels,i.sampleRate),numberOfChannels:i.numberOfChannels,sampleRate:i.sampleRate,bitrate:this.codecConfig.bitrate,...ct(this.codecConfig.codec)}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Oe=class extends E{constructor(i){super(i.codec),this._encoder=new oe(this,i)}digest(i){if(!(i instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},Ee=class extends E{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new oe(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,a=e.length,o=new Float32Array(r*a);for(let c=0;c{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},R=class extends W{constructor(e){super();this._connectedTrack=null;if(!ke.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${ke.join(", ")}.`);this._codec=e}},Ve=class extends R{constructor(i){super(i),this._parser=new ue({codec:i,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(i){if(typeof i!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(i),this._connectedTrack.output._muxer.mutex.currentPromise}};var ze=class{constructor(i){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new N;if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(!(i.format instanceof z))throw new TypeError("options.format must be an OutputFormat.");if(!(i.target instanceof V))throw new TypeError("options.target must be a Target.");if(i.target._output)throw new Error("Target is already used for another output.");i.target._output=this,this._writer=i.target._createWriter(),this._muxer=i.format._createMuxer(this)}addVideoTrack(i,e={}){if(!(i instanceof O))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",i,e)}addAudioTrack(i,e={}){if(!(i instanceof E))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",i,e)}addSubtitleTrack(i,e={}){if(!(i instanceof R))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",i,e)}_addTrack(i,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:i,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 i=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();i()}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 i=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(),i()}};return Ct(_r);})(); if (typeof module === "object" && typeof module.exports === "object") Object.assign(module.exports, Metamuxer) diff --git a/dist/metamuxer.min.mjs b/dist/metamuxer.min.mjs index c8658a3..b4b7e67 100644 --- a/dist/metamuxer.min.mjs +++ b/dist/metamuxer.min.mjs @@ -1,9 +1,9 @@ -function d(t){if(!t)throw new Error("Assertion failed.")}var S=t=>t&&t[t.length-1],V=t=>t>=0&&t<2**32,z=(t,i,e)=>{let r=0;for(let s=i;s>n;r<<=1,r|=u}return r},He=(t,i,e,r)=>{for(let s=i;s>e-s-1<t instanceof ArrayBuffer?new Uint8Array(t):new Uint8Array(t.buffer,t.byteOffset,t.byteLength),y=new 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e.data=="number"){let r=e.size??Ae(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 ee)this.writeEBMLVarInt(4),this.writeFloat32(e.data.value);else if(e.data instanceof j)this.writeEBMLVarInt(8),this.writeFloat64(e.data.value);else if(e.data instanceof te){let r=e.size??Oe(e.data.value);this.writeEBMLVarInt(r),this.writeSignedInt(e.data.value,r)}}}beforeTrackAdd(e){if(this.format instanceof L)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. 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a={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getAudioTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;he(r),d(r),d(r.decoderConfig);let a={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getSubtitleTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;be(r),d(r),d(r.config);let a={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}async addEncodedVideoChunk(e,r,s){let a=await 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t!="object")throw new TypeError("Subtitle metadata must be an object.");if(!t.config)throw new TypeError("Subtitle metadata must include a config object.");if(typeof t.config!="object")throw new TypeError("Subtitle metadata config must be an object.");if(typeof t.config.description!="string")throw new TypeError("Subtitle metadata config description must be a string.")};var ce=1e3,pr=2082844800,v=(t,i,e=!0)=>{let r=t*i;return e?Math.round(r):r},xe=class extends Q{constructor(e,r){super(e);this.timestampsMustStartAtZero=!0;this.auxTarget=new J;this.auxWriter=this.auxTarget._createWriter();this.auxBoxWriter=new G(this.auxWriter);this.ftypSize=null;this.mdat=null;this.trackDatas=[];this.creationTime=Math.floor(Date.now()/1e3)+pr;this.finalizedChunks=[];this.nextFragmentNumber=1;this.writer=e._writer,this.boxWriter=new G(this.writer),this.fastStart=r._options.fastStart??(this.writer instanceof 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a={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(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getAudioTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;he(r),d(r),d(r.decoderConfig);let a={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 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addEncodedAudioChunk(e,r,s){let a=await this.mutex.acquire();try{let o=this.getAudioTrackData(e,s),n=new Uint8Array(r.byteLength);r.copyTo(n);let u=this.validateAndNormalizeTimestamp(o.track,r.timestamp,r.type==="key"),c=this.createSampleForTrack(o,n,u,(r.duration??0)/1e6,r.type);await this.registerSample(o,c)}finally{a()}}async addSubtitleCue(e,r,s){let a=await this.mutex.acquire();try{let o=this.getSubtitleTrackData(e,s);this.validateAndNormalizeTimestamp(o.track,1e6*r.timestamp,!0),e.source._codec==="webvtt"&&(o.cueQueue.push(r),await this.processWebVTTCues(o,r.timestamp))}finally{a()}}async processWebVTTCues(e,r){for(;e.cueQueue.length>0;){let s=new Set([]);for(let m of e.cueQueue)d(m.timestamp<=r),d(e.lastCueEndTimestamp<=m.timestamp+m.duration),s.add(Math.max(m.timestamp,e.lastCueEndTimestamp)),s.add(m.timestamp+m.duration);let a=[...s].sort((m,f)=>m-f),o=a[0],n=a[1]??o;if(r=n)break;H.lastIndex=0;let w=H.test(f.text),O=f.timestamp+f.duration,C=e.cueToSourceId.get(f);if(C===void 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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=_e(e)){let s=0;switch(r){case 6:this.helperView.setUint8(s++,e/2**40|0);case 5:this.helperView.setUint8(s++,e/2**32|0);case 4:this.helperView.setUint8(s++,e>>24);case 3:this.helperView.setUint8(s++,e>>16);case 2:this.helperView.setUint8(s++,e>>8);case 1:this.helperView.setUint8(s++,e);break;default:throw new Error("Bad UINT size "+r)}this.writer.write(this.helper.subarray(0,s))}writeSignedInt(e,r=Oe(e)){e<0&&(e+=2**(r*8)),this.writeUnsignedInt(e,r)}writeEBMLVarInt(e,r=ct(e)){let s=0;switch(r){case 1:this.helperView.setUint8(s++,128|e);break;case 2:this.helperView.setUint8(s++,64|e>>8),this.helperView.setUint8(s++,e);break;case 3:this.helperView.setUint8(s++,32|e>>16),this.helperView.setUint8(s++,e>>8),this.helperView.setUint8(s++,e);break;case 4:this.helperView.setUint8(s++,16|e>>24),this.helperView.setUint8(s++,e>>16),this.helperView.setUint8(s++,e>>8),this.helperView.setUint8(s++,e);break;case 5:this.helperView.setUint8(s++,8|e/2**32&7),this.helperView.setUint8(s++,e>>24),this.helperView.setUint8(s++,e>>16),this.helperView.setUint8(s++,e>>8),this.helperView.setUint8(s++,e);break;case 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e.data=="number"){let r=e.size??_e(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 ee)this.writeEBMLVarInt(4),this.writeFloat32(e.data.value);else if(e.data instanceof j)this.writeEBMLVarInt(8),this.writeFloat64(e.data.value);else if(e.data instanceof te){let r=e.size??Oe(e.data.value);this.writeEBMLVarInt(r),this.writeSignedInt(e.data.value,r)}}}beforeTrackAdd(e){if(this.format instanceof L)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. 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r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:dt},{id:22337,data:dt},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:br[r.type]},{id:134,data:hr[r.track.source._codec]},...r.type==="video"?[r.info.decoderConfig.description?{id:25506,data:P(r.info.decoderConfig.description)}:null,r.track.metadata.frameRate?{id:2352003,data:1e9/r.track.metadata.frameRate}:null,{id:224,data:[{id:176,data:r.info.width},{id:186,data:r.info.height},(()=>{if(r.info.decoderConfig.colorSpace){let s=r.info.decoderConfig.colorSpace;return oe(s)?{id:21936,data:[{id:21937,data:N[s.matrix]},{id:21946,data:F[s.transfer]},{id:21947,data:R[s.primaries]},{id:21945,data:[1,2][Number(s.fullRange)]}]}:null}return null})()]}]:[],...r.type==="audio"?[r.info.decoderConfig.description?{id:25506,data:P(r.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new ee(r.info.sampleRate)},{id:159,data:r.info.numberOfChannels}]}]:[],...r.type==="subtitle"?[{id:25506,data:y.encode(r.info.config.description)}]:[]]})}createSegment(){let e={id:408125543,size:this.format._options.streamable?-1:mt,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 d(this.segment),this.dataOffsets.get(this.segment)}getVideoTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;pe(r),d(r),d(r.decoderConfig),d(r.decoderConfig.codedWidth!==void 0),d(r.decoderConfig.codedHeight!==void 0);let a={track:e,type:"video",info:{width:r.decoderConfig.codedWidth,height:r.decoderConfig.codedHeight,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getAudioTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;he(r),d(r),d(r.decoderConfig);let a={track:e,type:"audio",info:{numberOfChannels:r.decoderConfig.numberOfChannels,sampleRate:r.decoderConfig.sampleRate,decoderConfig:r.decoderConfig},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}getSubtitleTrackData(e,r){let s=this.trackDatas.find(o=>o.track===e);if(s)return s;be(r),d(r),d(r.config);let a={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((o,n)=>o.track.id-n.track.id),a}async addEncodedVideoChunk(e,r,s){let a=await this.mutex.acquire();try{let o=this.getVideoTrackData(e,s),n=new Uint8Array(r.byteLength);r.copyTo(n);let u=this.validateAndNormalizeTimestamp(o.track,r.timestamp,r.type==="key"),c=this.createInternalChunk(n,u,(r.duration??0)/1e6,r.type);e.source._codec==="vp9"&&this.fixVP9ColorSpace(o,c),o.chunkQueue.push(c),await this.interleaveChunks()}finally{a()}}async addEncodedAudioChunk(e,r,s){let a=await this.mutex.acquire();try{let o=this.getAudioTrackData(e,s),n=new Uint8Array(r.byteLength);r.copyTo(n);let u=this.validateAndNormalizeTimestamp(o.track,r.timestamp,r.type==="key"),c=this.createInternalChunk(n,u,(r.duration??0)/1e6,r.type);o.chunkQueue.push(c),await this.interleaveChunks()}finally{a()}}async addSubtitleCue(e,r,s){let a=await this.mutex.acquire();try{let o=this.getSubtitleTrackData(e,s),n=this.validateAndNormalizeTimestamp(o.track,1e6*r.timestamp,!0),u=r.text,c=Math.floor(n*1e3);H.lastIndex=0,u=u.replace(H,O=>{let g=ue(O.slice(1,-1))-c;return`<${le(g)}>`});let m=y.encode(u),f=`${r.settings??""} ${r.identifier??""} -${r.notes??""}`,w=this.createInternalChunk(m,n,r.duration,"key",f.trim()?y.encode(f):null);o.chunkQueue.push(w),await this.interleaveChunks()}finally{a()}}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 a of this.trackDatas){if(a.chunkQueue.length===0&&!a.track.source._closed)break e;a.chunkQueue.length>0&&a.chunkQueue[0].timestamp=2&&s++;let c={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];He(r.data,s+0,s+3,c)}createInternalChunk(e,r,s,a,o=null){return{data:e,type:a,timestamp:r,duration:s,additions:o}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),a=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let w=f.chunkQueue[0];return w&&w.type==="key"});(!this.currentCluster||a&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let o=s-this.currentClusterMsTimestamp;if(o<0)return;if(o>=Ee)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${Ee} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${Ee} milliseconds.`);let u=new Uint8Array(4),c=new DataView(u.buffer);c.setUint8(0,128|e.track.id),c.setInt16(1,o,!1);let m=Math.floor(1e3*r.duration);if(m===0&&!r.additions){c.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[u,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[u,r.data]},r.type==="delta"?{id:251,data:new te(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,m>0?{id:155,data:m}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+m),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:dt,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){d(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,dt),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;d(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(a=>({id:183,data:[{id:247,data:a.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(),d(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,ct),this.segmentDuration.data=new j(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 U=class{},Me=class extends U{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(i.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=i}_createMuxer(i){return new xe(i,this)}},Te=class extends U{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.streamable!==void 0&&typeof i.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=i}_createMuxer(i){return new we(i,this)}},L=class extends Te{};var re=["avc","hevc","vp8","vp9","av1"],ie=["aac","opus"],Ve=["webvtt"],q=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)}},E=class extends q{constructor(e){super();this._connectedTrack=null;if(!re.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${re.join(", ")}.`);this._codec=e}},ze=class extends E{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,i,e)}},hr=5,br=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!re.includes(t.codec))throw new TypeError(`Invalid video codec '${t.codec}'. Must be one of: ${re.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(t.latencyMode!==void 0&&["quality","realtime"].includes(t.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},se=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;br(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(i.codedWidth!==this.lastWidth||i.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${i.codedWidth}x${i.codedHeight}.`)}else this.lastWidth=i.codedWidth,this.lastHeight=i.codedHeight;this.ensureEncoder(i),d(this.encoder);let e=Math.floor(i.timestamp/1e6/hr);this.encoder.encode(i,{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(i){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:ot(this.codecConfig.codec,i.codedWidth,i.codedHeight,this.codecConfig.bitrate),width:i.codedWidth,height:i.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Pe=class extends E{constructor(i){super(i.codec),this._encoder=new se(this,i)}digest(i){if(!(i instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},Be=class extends E{constructor(i,e){if(!(i instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new se(this,e),this._canvas=i}digest(i,e=0){if(!Number.isFinite(i)||i<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*i),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},Ie=class extends E{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 se(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()}},M=class extends q{constructor(e){super();this._connectedTrack=null;if(!ie.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${ie.join(", ")}.`);this._codec=e}},Ue=class extends M{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,i,e)}},xr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!ie.includes(t.codec))throw new TypeError(`Invalid audio codec '${t.codec}'. Must be one of: ${ie.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},ae=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;xr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(i.numberOfChannels!==this.lastNumberOfChannels||i.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${i.numberOfChannels} channels at ${i.sampleRate} Hz.`)}else this.lastNumberOfChannels=i.numberOfChannels,this.lastSampleRate=i.sampleRate;this.ensureEncoder(i),d(this.encoder),this.encoder.encode(i),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(i){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:nt(this.codecConfig.codec,i.numberOfChannels,i.sampleRate),numberOfChannels:i.numberOfChannels,sampleRate:i.sampleRate,bitrate:this.codecConfig.bitrate}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},De=class extends M{constructor(i){super(i.codec),this._encoder=new ae(this,i)}digest(i){if(!(i instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},We=class extends M{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new ae(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,a=e.length,o=new Float32Array(r*a);for(let c=0;c{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},K=class extends q{constructor(e){super();this._connectedTrack=null;if(!Ve.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Ve.join(", ")}.`);this._codec=e}},Fe=class extends K{constructor(i){super(i),this._parser=new ne({codec:i,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(i){if(typeof i!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(i),this._connectedTrack.output._muxer.mutex.currentPromise}};var Ne=class{constructor(i){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new W;if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(!(i.format instanceof U))throw new TypeError("options.format must be an OutputFormat.");if(!(i.target instanceof I))throw new TypeError("options.target must be a Target.");if(i.target._output)throw new Error("Target is already used for another output.");i.target._output=this,this._writer=i.target._createWriter(),this._muxer=i.format._createMuxer(this)}addVideoTrack(i,e={}){if(!(i instanceof E))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: ${e.frameRate}. Must be a positive integer.`);this._addTrack("video",i,e)}addAudioTrack(i,e={}){if(!(i instanceof M))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",i,e)}addSubtitleTrack(i,e={}){if(!(i instanceof K))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",i,e)}_addTrack(i,e,r){if(this._started)throw new Error("Cannot add track after output has started.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let s={id:this._tracks.length+1,output:this,type:i,source:e,metadata:r};this._muxer.beforeTrackAdd(s),this._tracks.push(s),e._connectedTrack=s}async start(){if(this._started)throw new Error("Output already started.");this._started=!0,this._writer.start();let i=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();i()}async finalize(){if(!this._started)throw new Error("Cannot finalize before starting.");if(this._finalizing)throw new Error("Cannot call finalize twice.");this._finalizing=!0;let i=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flush());await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),i()}};export{ie as AUDIO_CODECS,J as ArrayBufferTarget,We as AudioBufferSource,De as AudioDataSource,M as AudioSource,Be as CanvasSource,Ue as EncodedAudioChunkSource,ze as EncodedVideoChunkSource,q as MediaSource,Re as MediaStreamAudioTrackSource,Ie as MediaStreamVideoTrackSource,Te as MkvOutputFormat,Me as Mp4OutputFormat,Ne as Output,U as OutputFormat,Ve as SUBTITLE_CODECS,_e as StreamTarget,K as SubtitleSource,I as Target,Fe as TextSubtitleSource,re as VIDEO_CODECS,Pe as VideoFrameSource,E as VideoSource,L as WebMOutputFormat}; +${r.notes??""}`,w=this.createInternalChunk(m,n,r.duration,"key",f.trim()?y.encode(f):null);o.chunkQueue.push(w),await this.interleaveChunks()}finally{a()}}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 a of this.trackDatas){if(a.chunkQueue.length===0&&!a.track.source._closed)break e;a.chunkQueue.length>0&&a.chunkQueue[0].timestamp=2&&s++;let c={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];He(r.data,s+0,s+3,c)}createInternalChunk(e,r,s,a,o=null){return{data:e,type:a,timestamp:r,duration:s,additions:o}}writeBlock(e,r){this.segment||(this.createTracks(),this.createSegment());let s=Math.floor(1e3*r.timestamp),a=this.trackDatas.every(f=>{if(f.track.source._closed)return!0;if(e===f)return r.type==="key";let w=f.chunkQueue[0];return w&&w.type==="key"});(!this.currentCluster||a&&s-this.currentClusterMsTimestamp>=1e3)&&this.createNewCluster(s);let o=s-this.currentClusterMsTimestamp;if(o<0)return;if(o>=Ee)throw new Error(`Current Matroska cluster exceeded its maximum allowed length of ${Ee} milliseconds. In order to produce a correct WebM file, you must pass in a key frame at least every ${Ee} milliseconds.`);let u=new Uint8Array(4),c=new DataView(u.buffer);c.setUint8(0,128|e.track.id),c.setInt16(1,o,!1);let m=Math.floor(1e3*r.duration);if(m===0&&!r.additions){c.setUint8(3,+(r.type==="key")<<7);let f={id:163,data:[u,r.data]};this.writeEBML(f)}else{let f={id:160,data:[{id:161,data:[u,r.data]},r.type==="delta"?{id:251,data:new te(e.lastWrittenMsTimestamp-s)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:165,data:r.additions},{id:238,data:1}]}]}:null,m>0?{id:155,data:m}:null]};this.writeEBML(f)}this.duration=Math.max(this.duration,s+m),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:ft,data:[{id:231,data:e}]},this.writeEBML(this.currentCluster),this.currentClusterMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){d(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,ft),this.writer.seek(r);let s=this.offsets.get(this.currentCluster)-this.segmentDataOffset;d(this.cues),this.cues.data.push({id:187,data:[{id:179,data:this.currentClusterMsTimestamp},...[...this.trackDatasInCurrentCluster].map(a=>({id:183,data:[{id:247,data:a.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(),d(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,mt),this.segmentDuration.data=new j(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 U=class{},Me=class extends U{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.fastStart!==void 0&&![!1,"in-memory","fragmented"].includes(i.fastStart))throw new TypeError('options.fastStart, when provided, must be false, "in-memory", or "fragmented".');super(),this._options=i}_createMuxer(i){return new xe(i,this)}},Te=class extends U{constructor(i={}){if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.streamable!==void 0&&typeof i.streamable!="boolean")throw new TypeError("options.streamable, when provided, must be a boolean.");super(),this._options=i}_createMuxer(i){return new we(i,this)}},L=class extends Te{};var re=["avc","hevc","vp8","vp9","av1"],ie=["aac","opus"],Ve=["webvtt"],q=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)}},E=class extends q{constructor(e){super();this._connectedTrack=null;if(!re.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${re.join(", ")}.`);this._codec=e}},ze=class extends E{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedVideoChunk))throw new TypeError("chunk must be an EncodedVideoChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedVideoChunk(this._connectedTrack,i,e)}},xr=5,wr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!re.includes(t.codec))throw new TypeError(`Invalid video codec '${t.codec}'. Must be one of: ${re.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.");if(t.latencyMode!==void 0&&["quality","realtime"].includes(t.latencyMode))throw new TypeError("config.latencyMode, when provided, must be 'quality' or 'realtime'.")},se=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.lastWidth=null;this.lastHeight=null;wr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastWidth!==null&&this.lastHeight!==null){if(i.codedWidth!==this.lastWidth||i.codedHeight!==this.lastHeight)throw new Error(`Video frame size must remain constant. Expected ${this.lastWidth}x${this.lastHeight}, got ${i.codedWidth}x${i.codedHeight}.`)}else this.lastWidth=i.codedWidth,this.lastHeight=i.codedHeight;this.ensureEncoder(i),d(this.encoder);let e=Math.floor(i.timestamp/1e6/xr);this.encoder.encode(i,{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(i){this.encoder||(this.encoder=new VideoEncoder({output:(e,r)=>this.muxer.addEncodedVideoChunk(this.source._connectedTrack,e,r),error:e=>console.error("Video encode error:",e)}),this.encoder.configure({codec:ot(this.codecConfig.codec,i.codedWidth,i.codedHeight,this.codecConfig.bitrate),width:i.codedWidth,height:i.codedHeight,bitrate:this.codecConfig.bitrate,framerate:this.source._connectedTrack?.metadata.frameRate,latencyMode:this.codecConfig.latencyMode,...ut(this.codecConfig.codec)}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},Pe=class extends E{constructor(i){super(i.codec),this._encoder=new se(this,i)}digest(i){if(!(i instanceof VideoFrame))throw new TypeError("videoFrame must be a VideoFrame.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},Be=class extends E{constructor(i,e){if(!(i instanceof HTMLCanvasElement))throw new TypeError("canvas must be an HTMLCanvasElement.");super(e.codec),this._encoder=new se(this,e),this._canvas=i}digest(i,e=0){if(!Number.isFinite(i)||i<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*i),duration:Math.round(1e6*e),alpha:"discard"}),s=this._encoder.digest(r);return r.close(),s}_flush(){return this._encoder.flush()}},Ie=class extends E{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 se(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()}},M=class extends q{constructor(e){super();this._connectedTrack=null;if(!ie.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${ie.join(", ")}.`);this._codec=e}},Ue=class extends M{constructor(i){super(i)}digest(i,e){if(!(i instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedAudioChunk.");return this._ensureValidDigest(),this._connectedTrack.output._muxer.addEncodedAudioChunk(this._connectedTrack,i,e)}},Tr=t=>{if(!t||typeof t!="object")throw new TypeError("Codec config must be an object.");if(!ie.includes(t.codec))throw new TypeError(`Invalid audio codec '${t.codec}'. Must be one of: ${ie.join(", ")}.`);if(!Number.isInteger(t.bitrate)||t.bitrate<=0)throw new TypeError("config.bitrate must be a positive integer.")},ae=class{constructor(i,e){this.source=i;this.codecConfig=e;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;Tr(e)}async digest(i){if(this.source._ensureValidDigest(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(i.numberOfChannels!==this.lastNumberOfChannels||i.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${i.numberOfChannels} channels at ${i.sampleRate} Hz.`)}else this.lastNumberOfChannels=i.numberOfChannels,this.lastSampleRate=i.sampleRate;this.ensureEncoder(i),d(this.encoder),this.encoder.encode(i),this.encoder.encodeQueueSize>=4&&await new Promise(e=>this.encoder.addEventListener("dequeue",e,{once:!0})),await this.muxer.mutex.currentPromise}ensureEncoder(i){this.encoder||(this.encoder=new AudioEncoder({output:(e,r)=>this.muxer.addEncodedAudioChunk(this.source._connectedTrack,e,r),error:e=>console.error("Audio encode error:",e)}),this.encoder.configure({codec:nt(this.codecConfig.codec,i.numberOfChannels,i.sampleRate),numberOfChannels:i.numberOfChannels,sampleRate:i.sampleRate,bitrate:this.codecConfig.bitrate,...lt(this.codecConfig.codec)}),d(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer)}async flush(){this.encoder&&(await this.encoder.flush(),this.encoder.close())}},De=class extends M{constructor(i){super(i.codec),this._encoder=new ae(this,i)}digest(i){if(!(i instanceof AudioData))throw new TypeError("audioData must be an AudioData.");return this._encoder.digest(i)}_flush(){return this._encoder.flush()}},We=class extends M{constructor(e){super(e.codec);this._accumulatedFrameCount=0;this._encoder=new ae(this,e)}digest(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=e.numberOfChannels,s=e.sampleRate,a=e.length,o=new Float32Array(r*a);for(let c=0;c{this._encoder.digest(s),s.close()}});e.readable.pipeTo(r,{signal:this._abortController.signal}).catch(s=>{s instanceof DOMException&&s.name==="AbortError"||console.error("Pipe error:",s)})}async _flush(){this._abortController&&(this._abortController.abort(),this._abortController=null),await this._encoder.flush()}},K=class extends q{constructor(e){super();this._connectedTrack=null;if(!Ve.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Ve.join(", ")}.`);this._codec=e}},Fe=class extends K{constructor(i){super(i),this._parser=new ne({codec:i,output:(e,r)=>this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,e,r),error:e=>console.error("Subtitle parse error:",e)})}digest(i){if(typeof i!="string")throw new TypeError("text must be a string.");return this._ensureValidDigest(),this._parser.parse(i),this._connectedTrack.output._muxer.mutex.currentPromise}};var Ne=class{constructor(i){this._tracks=[];this._started=!1;this._finalizing=!1;this._mutex=new W;if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(!(i.format instanceof U))throw new TypeError("options.format must be an OutputFormat.");if(!(i.target instanceof I))throw new TypeError("options.target must be a Target.");if(i.target._output)throw new Error("Target is already used for another output.");i.target._output=this,this._writer=i.target._createWriter(),this._muxer=i.format._createMuxer(this)}addVideoTrack(i,e={}){if(!(i instanceof E))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",i,e)}addAudioTrack(i,e={}){if(!(i instanceof M))throw new TypeError("source must be an AudioSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("audio",i,e)}addSubtitleTrack(i,e={}){if(!(i instanceof K))throw new TypeError("source must be a SubtitleSource.");if(!e||typeof e!="object")throw new TypeError("metadata must be an object.");this._addTrack("subtitle",i,e)}_addTrack(i,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:i,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 i=await this._mutex.acquire();await this._muxer.start();for(let e of this._tracks)e.source._start();i()}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 i=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(),i()}};export{ie as AUDIO_CODECS,J as ArrayBufferTarget,We as AudioBufferSource,De as AudioDataSource,M as AudioSource,Be as CanvasSource,Ue as EncodedAudioChunkSource,ze as EncodedVideoChunkSource,q as MediaSource,Re as MediaStreamAudioTrackSource,Ie as MediaStreamVideoTrackSource,Te as MkvOutputFormat,Me as Mp4OutputFormat,Ne as Output,U as OutputFormat,Ve as SUBTITLE_CODECS,Ae as StreamTarget,K as SubtitleSource,I as Target,Fe as TextSubtitleSource,re as VIDEO_CODECS,Pe as VideoFrameSource,E as VideoSource,L as WebMOutputFormat}; diff --git a/dist/metamuxer.mjs b/dist/metamuxer.mjs index 03b8a44..d7608e0 100644 --- a/dist/metamuxer.mjs +++ b/dist/metamuxer.mjs @@ -768,7 +768,7 @@ var dOps = (trackData) => { let gain = 0; const description = trackData.info.decoderConfig?.description; if (description) { - assert(description.byteLength < 18); + assert(description.byteLength >= 18); const view2 = ArrayBuffer.isView(description) ? new DataView(description.buffer, description.byteOffset, description.byteLength) : new DataView(description); preskip = view2.getUint16(10, true); gain = view2.getInt16(14, true); @@ -1635,6 +1635,41 @@ var buildAudioCodecString = (codec, numberOfChannels, sampleRate) => { } throw new TypeError(`Unhandled codec '${codec}'.`); }; +var getVideoEncoderConfigExtension = (codec) => { + if (codec === "avc") { + return { + avc: { + format: "avc" + // Ensure the format is not Annex B + } + }; + } else if (codec === "hevc") { + return { + hevc: { + format: "hevc" + // Ensure the format is not Annex B + } + }; + } + return {}; +}; +var getAudioEncoderConfigExtension = (codec) => { + if (codec === "aac") { + return { + aac: { + format: "aac" + // Ensure the format is not ADTS + } + }; + } else if (codec === "opus") { + return { + opus: { + format: "opus" + } + }; + } + return {}; +}; var validateVideoChunkMetadata = (metadata) => { if (!metadata) { throw new TypeError("Video chunk metadata must be provided."); @@ -1720,6 +1755,9 @@ var validateAudioChunkMetadata = (metadata) => { throw new TypeError("Audio chunk metadata decoder configuration description, when defined, must be an ArrayBuffer or an ArrayBuffer view."); } } + if (metadata.decoderConfig.codec.startsWith("mp4a") && !metadata.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 (metadata.decoderConfig.codec === "opus" && metadata.decoderConfig.description && metadata.decoderConfig.description.byteLength < 18) { throw new TypeError("Invalid decoder description provided for Opus; must be at least 18 bytes long."); } @@ -3210,7 +3248,8 @@ var VideoEncoderWrapper = class { height: videoFrame.codedHeight, bitrate: this.codecConfig.bitrate, framerate: this.source._connectedTrack?.metadata.frameRate, - latencyMode: this.codecConfig.latencyMode + latencyMode: this.codecConfig.latencyMode, + ...getVideoEncoderConfigExtension(this.codecConfig.codec) }); assert(this.source._connectedTrack); this.muxer = this.source._connectedTrack.output._muxer; @@ -3385,7 +3424,8 @@ var AudioEncoderWrapper = class { codec: buildAudioCodecString(this.codecConfig.codec, audioData.numberOfChannels, audioData.sampleRate), numberOfChannels: audioData.numberOfChannels, sampleRate: audioData.sampleRate, - bitrate: this.codecConfig.bitrate + bitrate: this.codecConfig.bitrate, + ...getAudioEncoderConfigExtension(this.codecConfig.codec) }); assert(this.source._connectedTrack); this.muxer = this.source._connectedTrack.output._muxer; diff --git a/src/codec.ts b/src/codec.ts index 8608063..2f852ce 100644 --- a/src/codec.ts +++ b/src/codec.ts @@ -181,6 +181,42 @@ export const buildAudioCodecString = (codec: AudioCodec, numberOfChannels: numbe throw new TypeError(`Unhandled codec '${codec}'.`); }; +export const getVideoEncoderConfigExtension = (codec: VideoCodec) => { + if (codec === 'avc') { + return { + avc: { + format: 'avc' as const // Ensure the format is not Annex B + } + }; + } else if (codec === 'hevc') { + return { + hevc: { + format: 'hevc' as const // Ensure the format is not Annex B + } + }; + } + + return {}; +}; + +export const getAudioEncoderConfigExtension = (codec: AudioCodec) => { + if (codec === 'aac') { + return { + aac: { + format: 'aac' as const // Ensure the format is not ADTS + } + }; + } else if (codec === 'opus') { + return { + opus: { + format: 'opus' as const + } + }; + } + + return {}; +}; + export const validateVideoChunkMetadata = (metadata: EncodedVideoChunkMetadata | undefined) => { if (!metadata) { throw new TypeError("Video chunk metadata must be provided."); @@ -236,12 +272,9 @@ export const validateVideoChunkMetadata = (metadata: EncodedVideoChunkMetadata | } if ((metadata.decoderConfig.codec.startsWith('avc1') || metadata.decoderConfig.codec.startsWith('avc3')) && !metadata.decoderConfig.description) { - // TODO Technically not correct, they can also lack a description in which case the chunks are annexb. Generally, - // go through all the codec registrations and catch these edge cases. throw new TypeError("Video chunk metadata decoder configuration for AVC must include a description, which is expected to be an AVCDecoderConfigurationRecord as specified in ISO 14496-15."); } if ((metadata.decoderConfig.codec.startsWith('hev1') || metadata.decoderConfig.codec.startsWith('hvc1')) && !metadata.decoderConfig.description) { - // TODO Same as above 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 ((metadata.decoderConfig.codec === 'vp8' || metadata.decoderConfig.codec.startsWith('vp09')) && metadata.decoderConfig.colorSpace === undefined) { @@ -278,6 +311,9 @@ export const validateAudioChunkMetadata = (metadata: EncodedAudioChunkMetadata | } } + if (metadata.decoderConfig.codec.startsWith('mp4a') && !metadata.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 (metadata.decoderConfig.codec === 'opus' && metadata.decoderConfig.description && metadata.decoderConfig.description.byteLength < 18) { throw new TypeError('Invalid decoder description provided for Opus; must be at least 18 bytes long.'); } diff --git a/src/isobmff/isobmff-boxes.ts b/src/isobmff/isobmff-boxes.ts index 815be82..80d6256 100644 --- a/src/isobmff/isobmff-boxes.ts +++ b/src/isobmff/isobmff-boxes.ts @@ -696,7 +696,7 @@ export const dOps = (trackData: IsobmffAudioTrackData) => { // https://www.rfc-editor.org/rfc/rfc7845#section-5 const description = trackData.info.decoderConfig?.description; if (description) { - assert(description.byteLength < 18); // Is validated in an earlier step + assert(description.byteLength >= 18); // Is validated in an earlier step const view = ArrayBuffer.isView(description) ? new DataView(description.buffer, description.byteOffset, description.byteLength) diff --git a/src/source.ts b/src/source.ts index 77334f5..bb64481 100644 --- a/src/source.ts +++ b/src/source.ts @@ -1,4 +1,4 @@ -import { buildAudioCodecString, buildVideoCodecString } from "./codec"; +import { buildAudioCodecString, buildVideoCodecString, getAudioEncoderConfigExtension, getVideoEncoderConfigExtension } from "./codec"; import { assert } from "./misc"; import { Muxer } from "./muxer"; import { OutputAudioTrack, OutputSubtitleTrack, OutputTrack, OutputVideoTrack } from "./output"; @@ -194,6 +194,7 @@ class VideoEncoderWrapper { bitrate: this.codecConfig.bitrate, framerate: this.source._connectedTrack?.metadata.frameRate, latencyMode: this.codecConfig.latencyMode, + ...getVideoEncoderConfigExtension(this.codecConfig.codec) }); assert(this.source._connectedTrack); @@ -438,6 +439,7 @@ class AudioEncoderWrapper { numberOfChannels: audioData.numberOfChannels, sampleRate: audioData.sampleRate, bitrate: this.codecConfig.bitrate, + ...getAudioEncoderConfigExtension(this.codecConfig.codec) }); assert(this.source._connectedTrack);