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fix: hls播放mp2音画不同步

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wudechang 2024-12-18 14:55:59 +08:00 committed by gemstone
parent 0655c9d62f
commit afd19916a8
1 changed files with 18 additions and 0 deletions
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18
packages/xgplayer-transmuxer/src/mpeg-ts/fixer.js
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@ -1,6 +1,7 @@
import { AudioSample, WarningType } from '../model'
import { AAC } from '../codec'
import { isSafari } from '../utils'
import { AudioCodecType } from '../model/types'
const LARGE_AV_FIRST_FRAME_GAP = 90000 / 2 // 500ms
const AUDIO_GAP_OVERLAP_THRESHOLD_COUNT = 3
@ -230,6 +231,23 @@ export class TsFixer {
const samples = audioTrack.samples
if (!samples.length) return
if (audioTrack.codecType === AudioCodecType.MP3) {
if (this.lastAudioSample) {
samples.unshift(this.lastAudioSample)
}
for (let index = 0; index < samples.length; index++) {
const x = samples[index]
if (samples[index + 1]) {
x.duration = samples[index + 1].pts - x.pts
} else {
break
}
x.pts -= this._baseDts
x.dts = x.pts
}
this.lastAudioSample = samples.pop()
return
}
samples.forEach(x => {
x.pts -= this._needForceFixLargeGap ? this._baseAudioDts : this._baseDts
x.dts = x.pts