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Add support for remaining audio codecs to Matroska muxer

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This commit is contained in:
Vanilagy
2025-01-06 21:09:12 +01:00
parent 7c65c2e7e9
commit 00408c86ff
6 changed files with 95 additions and 39 deletions
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dev/demux.html
+13 -7
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@@ -46,10 +46,12 @@
const target = new Metamuxer.BufferTarget();
const output = new Metamuxer.Output({
format: new Metamuxer.MovOutputFormat({ fastStart: undefined }),
format: new Metamuxer.MkvOutputFormat(),
target
});
console.log(await input.getFormat());
const audioTrack = await input.getPrimaryAudioTrack();
const videoTrack = await input.getPrimaryVideoTrack();
@@ -57,9 +59,9 @@
const decoderConfig = await audioTrack.getDecoderConfig();
const sampleSource = new Metamuxer.EncodedAudioSampleSource(await audioTrack.getCodec());
const audioDataSource = new Metamuxer.AudioDataSource({ codec: 'alaw', bitrate: 128e3 });
const audioDataSource = new Metamuxer.AudioDataSource({ codec: 'pcm-s16', bitrate: 128e3 });
const videoSampleSource = new Metamuxer.EncodedVideoSampleSource(await videoTrack.getCodec());
output.addAudioTrack(audioDataSource ?? sampleSource);
output.addAudioTrack(sampleSource);
output.addVideoTrack(videoSampleSource);
output.start();
@@ -67,18 +69,22 @@
const videoDecoderConfig = await videoTrack.getDecoderConfig();
/*
for await (const sample of drain.samples()) {
//console.log(sample.timestamp);
//sample.timestamp *= 2;
//console.log(sample);
//console.log(sample)
await sampleSource.digest(sample, { decoderConfig });
}
*/
for await (const { data } of new Metamuxer.AudioDataDrain(audioTrack).data()) {
/*
for await (const { data, timestamp } of new Metamuxer.AudioDataDrain(audioTrack).data()) {
//console.log("wow", data.timestamp);
//console.log(sample)
await audioDataSource.digest(data);
}
*/
for await (const sample of new Metamuxer.EncodedVideoSampleDrain(videoTrack).samples()) {
//console.log(sample)
await videoSampleSource.digest(sample, { decoderConfig: videoDecoderConfig });
@@ -96,7 +102,7 @@
a.click();
URL.revokeObjectURL(url);
}
download(new Blob([target.buffer]), 'converted.mov');
download(new Blob([target.buffer]), 'converted.mkv');
document.body.textContent = performance.now() - start;