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@ -666,6 +666,16 @@ namespace MediaBrowser.MediaEncoding.Probing
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stream.AverageFrameRate = GetFrameRate(streamInfo.AverageFrameRate);
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stream.RealFrameRate = GetFrameRate(streamInfo.RFrameRate);
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// Interlaced video streams in Matroska containers return the field rate instead of the frame rate
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// as both the average and real frame rate, so we half the returned frame rates to get the correct values
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//
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// https://gitlab.com/mbunkus/mkvtoolnix/-/wikis/Wrong-frame-rate-displayed
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if (stream.IsInterlaced && formatInfo.FormatName.Contains("matroska", StringComparison.OrdinalIgnoreCase))
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{
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stream.AverageFrameRate /= 2;
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stream.RealFrameRate /= 2;
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}
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if (isAudio || string.Equals(stream.Codec, "gif", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(stream.Codec, "png", StringComparison.OrdinalIgnoreCase))
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{
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