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Fix MP3 encoder emitting incorrect timestamps, fixed overaggressive audio sample gap filling (fixes #233)

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Vanilagy
2025-12-05 12:41:36 +01:00
parent 3dd7a9cb58
commit 5b703a1c78
3 changed files with 31 additions and 15 deletions
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src/media-source.ts
+19 -13
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@@ -1356,21 +1356,27 @@ class AudioEncoderWrapper {
(audioSample.timestamp + audioSample.duration) * audioSample.sampleRate,
);
if (this.lastEndSampleIndex !== null && startSampleIndex > this.lastEndSampleIndex) {
const sampleCount = startSampleIndex - this.lastEndSampleIndex;
const fillSample = new AudioSample({
data: new Float32Array(sampleCount * audioSample.numberOfChannels),
format: 'f32-planar',
sampleRate: audioSample.sampleRate,
numberOfChannels: audioSample.numberOfChannels,
numberOfFrames: sampleCount,
timestamp: this.lastEndSampleIndex / audioSample.sampleRate,
});
if (this.lastEndSampleIndex === null) {
this.lastEndSampleIndex = endSampleIndex;
} else {
const sampleDiff = startSampleIndex - this.lastEndSampleIndex;
await this.add(fillSample, true); // Recursive call
if (sampleDiff >= 64) {
// The gap is big enough, let's add a correction sample
const fillSample = new AudioSample({
data: new Float32Array(sampleDiff * audioSample.numberOfChannels),
format: 'f32-planar',
sampleRate: audioSample.sampleRate,
numberOfChannels: audioSample.numberOfChannels,
numberOfFrames: sampleDiff,
timestamp: this.lastEndSampleIndex / audioSample.sampleRate,
});
await this.add(fillSample, true); // Recursive call
}
this.lastEndSampleIndex += audioSample.numberOfFrames;
}
this.lastEndSampleIndex = endSampleIndex;
}
if (this.customEncoder) {