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Add support for all audio codecs in the ISOBMFF muxer (& some fixes)

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This commit is contained in:
Vanilagy
2025-01-05 13:50:50 +01:00
parent 316e16211b
commit ee81e1b674
10 changed files with 560 additions and 155 deletions
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dev/demux.html
+34 -16
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@@ -40,35 +40,49 @@
source
});
//const videoTrack = await input.getPrimaryVideoTrack();
//console.log(await videoTrack.computeSampleStats());
//return;
const target = new Metamuxer.ArrayBufferTarget();
const output = new Metamuxer.Output({
format: new Metamuxer.Mp4OutputFormat({ fastStart: undefined }),
format: new Metamuxer.MovOutputFormat({ fastStart: undefined }),
target
});
const audioTrack = await input.getPrimaryAudioTrack();
const videoTrack = await input.getPrimaryVideoTrack();
const drain = new Metamuxer.EncodedVideoSampleDrain(videoTrack);
const drain = new Metamuxer.EncodedAudioSampleDrain(audioTrack);
console.log(await videoTrack.computeSampleStats())
document.body.textContent = performance.now() - start;
const decoderConfig = await videoTrack.getDecoderConfig();
const sampleSource = new Metamuxer.EncodedVideoSampleSource(await videoTrack.getCodec());
output.addVideoTrack(sampleSource);
const decoderConfig = await audioTrack.getDecoderConfig();
const sampleSource = new Metamuxer.EncodedAudioSampleSource(await audioTrack.getCodec());
const audioDataSource = new Metamuxer.AudioDataSource({ codec: 'ulaw' });
const videoSampleSource = new Metamuxer.EncodedVideoSampleSource(await videoTrack.getCodec());
output.addAudioTrack(audioDataSource ?? sampleSource);
output.addVideoTrack(videoSampleSource);
output.start();
let j = 0;
for await (const sample of drain.samples(undefined, undefined)) {
await sampleSource.digest(sample, { decoderConfig });
const videoDecoderConfig = await videoTrack.getDecoderConfig();
if (j++ < 12) {
console.log(sample);
}
/*
for await (const sample of drain.samples()) {
//sample.timestamp *= 2;
//console.log(sample);
//console.log(sample)
await sampleSource.digest(sample, { decoderConfig });
}*/
for await (const { data } of new Metamuxer.AudioDataDrain(audioTrack).data()) {
//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 });
}
await output.finalize();
console.log(target)
@@ -80,8 +94,11 @@
a.click();
URL.revokeObjectURL(url);
}
download(new Blob([target.buffer]), 'converted.mp4');
download(new Blob([target.buffer]), 'converted.mov');
document.body.textContent = performance.now() - start;
/*
const input2 = new Metamuxer.Input({
formats: Metamuxer.ALL_FORMATS,
source: new Metamuxer.BufferSource(target.buffer)
@@ -97,6 +114,7 @@
break;
}
}
*/