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avoid transcoding to 3ch audio for HLS streaming

This commit is contained in:
nyanmisaka 2020-12-24 19:41:02 +08:00
parent afdc98746b
commit bc6ec08322
1 changed files with 10 additions and 0 deletions
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10
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
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@ -1722,6 +1722,16 @@ namespace MediaBrowser.Controller.MediaEncoding
: transcoderChannelLimit.Value;
}
// Avoid transcoding to audio channels other than 1ch, 2ch, 6ch (5.1 layout) and 8ch (7.1 layout).
// https://developer.apple.com/documentation/http_live_streaming/hls_authoring_specification_for_apple_devices
if (isTranscodingAudio
&& resultChannels.HasValue
&& resultChannels.Value > 2
&& resultChannels.Value < 6)
{
resultChannels = 2;
}
return resultChannels;
}