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Merge pull request #6222 from orryverducci/mbaff-interlace-detection

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Cody Robibero 2021-12-11 13:54:52 -07:00 committed by GitHub
commit 2a82f8dc40
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1 changed files with 17 additions and 5 deletions
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22
MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
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@ -649,11 +649,6 @@ namespace MediaBrowser.MediaEncoding.Probing
stream.IsAVC = false;
}
if (!string.IsNullOrWhiteSpace(streamInfo.FieldOrder) && !string.Equals(streamInfo.FieldOrder, "progressive", StringComparison.OrdinalIgnoreCase))
{
stream.IsInterlaced = true;
}
// Filter out junk
if (!string.IsNullOrWhiteSpace(streamInfo.CodecTagString) && !streamInfo.CodecTagString.Contains("[0]", StringComparison.OrdinalIgnoreCase))
{
@ -725,6 +720,23 @@ namespace MediaBrowser.MediaEncoding.Probing
stream.AverageFrameRate = GetFrameRate(streamInfo.AverageFrameRate);
stream.RealFrameRate = GetFrameRate(streamInfo.RFrameRate);
// Some interlaced H.264 files in mp4 containers using MBAFF coding aren't flagged as being interlaced by FFprobe,
// so for H.264 files we also calculate the frame rate from the codec time base and check if it is double the reported
// frame rate (both rounded to the nearest integer) to determine if the file is interlaced
float roundedTimeBaseFPS = MathF.Round(1 / GetFrameRate(stream.CodecTimeBase) ?? 0);
float roundedDoubleFrameRate = MathF.Round(stream.AverageFrameRate * 2 ?? 0);
bool videoInterlaced = !string.IsNullOrWhiteSpace(streamInfo.FieldOrder)
&& !string.Equals(streamInfo.FieldOrder, "progressive", StringComparison.OrdinalIgnoreCase);
bool h264MbaffCoded = string.Equals(stream.Codec, "h264", StringComparison.OrdinalIgnoreCase)
&& string.IsNullOrWhiteSpace(streamInfo.FieldOrder)
&& roundedTimeBaseFPS == roundedDoubleFrameRate;
if (videoInterlaced || h264MbaffCoded)
{
stream.IsInterlaced = true;
}
if (isAudio
|| string.Equals(stream.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)
|| string.Equals(stream.Codec, "gif", StringComparison.OrdinalIgnoreCase)