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Fix frame rate probing for interlaced MKV files

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This commit is contained in:
Orry Verducci 2020-10-25 16:35:03 +00:00
parent a69397d714
commit 84fd5a0953
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))
{