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Merge pull request #4860 from nyanmisaka/3ch-transcode-hls

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Avoid transcoding to 3ch audio for HLS streaming
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dkanada 2020-12-28 13:38:04 +09:00 committed by GitHub
parent f2e05bd183 470f40442c
commit 2913e2604c
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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
&& state.TranscodingType != TranscodingJobType.Progressive
&& resultChannels.HasValue
&& (resultChannels.Value > 2 && resultChannels.Value < 6 || resultChannels.Value == 7))
{
resultChannels = 2;
}
return resultChannels;
}