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adjust the first codec for hls streaming

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nyanmisaka 2020-10-31 21:20:20 +08:00
parent 3e4b27195c
commit 0d846fa06d
1 changed files with 21 additions and 27 deletions
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48
src/scripts/browserDeviceProfile.js
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@ -338,54 +338,48 @@ define(['browser'], function (browser) {
}
const canPlayAacVideoAudio = videoTestElement.canPlayType('video/mp4; codecs="avc1.640029, mp4a.40.2"').replace(/no/, '');
const canPlayAc3VideoAudio = supportsAc3(videoTestElement);
const canPlayEac3VideoAudio = supportsEac3(videoTestElement);
const canPlayAc3VideoAudioInHls = supportsAc3InHls(videoTestElement);
// Only put mp3 first if mkv support is there
// Otherwise with HLS and mp3 audio we're seeing some browsers
// safari is lying
if (supportsAc3(videoTestElement)) {
if (canPlayAc3VideoAudio) {
videoAudioCodecs.push('ac3');
const eAc3 = supportsEac3(videoTestElement);
if (eAc3) {
if (canPlayEac3VideoAudio) {
videoAudioCodecs.push('eac3');
}
// This works in edge desktop, but not mobile
// TODO: Retest this on mobile
if (supportsAc3InHls(videoTestElement)) {
// Transcoding codec is the first in hlsVideoAudioCodecs
// Put ac3/eac3 first only when the audio channels > 2 and need transcoding
if (canPlayAc3VideoAudioInHls && physicalAudioChannels > 2) {
hlsVideoAudioCodecs.push('ac3');
if (eAc3) {
if (canPlayEac3VideoAudio) {
hlsVideoAudioCodecs.push('eac3');
}
}
}
if (canPlayAacVideoAudio) {
videoAudioCodecs.push('aac');
hlsVideoAudioCodecs.push('aac');
}
if (supportsMp3VideoAudio) {
videoAudioCodecs.push('mp3');
// PS4 fails to load HLS with mp3 audio
if (!browser.ps4) {
// mp3 encoder only supports 2 channels, so only make that preferred if we're only requesting 2 channels
// Also apply it for chromecast because it no longer supports AAC 5.1
if (physicalAudioChannels <= 2) {
hlsVideoAudioCodecs.push('mp3');
}
hlsVideoAudioCodecs.push('mp3');
}
}
if (canPlayAacVideoAudio) {
if (videoAudioCodecs.indexOf('aac') === -1) {
videoAudioCodecs.push('aac');
}
hlsVideoAudioCodecs.push('aac');
}
if (supportsMp3VideoAudio) {
// PS4 fails to load HLS with mp3 audio
if (!browser.ps4) {
if (hlsVideoAudioCodecs.indexOf('mp3') === -1) {
hlsVideoAudioCodecs.push('mp3');
// For ac3/eac3 directstream
if (canPlayAc3VideoAudio) {
if (canPlayAc3VideoAudioInHls && hlsVideoAudioCodecs.indexOf('ac3') === -1) {
hlsVideoAudioCodecs.push('ac3');
if (canPlayEac3VideoAudio && hlsVideoAudioCodecs.indexOf('eac3') === -1) {
hlsVideoAudioCodecs.push('eac3');
}
}
}