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Merge pull request #4369 from orryverducci/mkv-interlaced-fix

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Fix frame rate probing for interlaced MKV files
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Bond-009 2020-10-25 21:26:04 +01:00 committed by GitHub
commit 655a4f8600
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1 changed files with 10 additions and 0 deletions
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10
MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
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@ -666,6 +666,16 @@ namespace MediaBrowser.MediaEncoding.Probing
stream.AverageFrameRate = GetFrameRate(streamInfo.AverageFrameRate);
stream.RealFrameRate = GetFrameRate(streamInfo.RFrameRate);
// Interlaced video streams in Matroska containers return the field rate instead of the frame rate
// as both the average and real frame rate, so we half the returned frame rates to get the correct values
//
// https://gitlab.com/mbunkus/mkvtoolnix/-/wikis/Wrong-frame-rate-displayed
if (stream.IsInterlaced && formatInfo.FormatName.Contains("matroska", StringComparison.OrdinalIgnoreCase))
{
stream.AverageFrameRate /= 2;
stream.RealFrameRate /= 2;
}
if (isAudio || string.Equals(stream.Codec, "gif", StringComparison.OrdinalIgnoreCase) ||
string.Equals(stream.Codec, "png", StringComparison.OrdinalIgnoreCase))
{