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Add support for PCM codecs in MP4, add 64-bit float PCM support

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Vanilagy
2025-06-16 10:49:55 +02:00
parent 0ca1425036
commit 05881ff1f5
12 changed files with 254 additions and 64 deletions
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src/matroska/ebml.ts
+1
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@@ -575,6 +575,7 @@ export const CODEC_STRING_MAP: Partial<Record<MediaCodec, string>> = {
'pcm-s32': 'A_PCM/INT/LIT',
'pcm-s32be': 'A_PCM/INT/BIG',
'pcm-f32': 'A_PCM/FLOAT/IEEE',
'pcm-f64': 'A_PCM/FLOAT/IEEE',
'webvtt': 'S_TEXT/WEBVTT',
};
src/matroska/matroska-demuxer.ts
+2
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@@ -707,6 +707,8 @@ export class MatroskaDemuxer extends Demuxer {
} else if (this.currentTrack.codecId === 'A_PCM/FLOAT/IEEE') {
if (this.currentTrack.info.bitDepth === 32) {
this.currentTrack.info.codec = 'pcm-f32';
} else if (this.currentTrack.info.bitDepth === 64) {
this.currentTrack.info.codec = 'pcm-f64';
}
}