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Revert 'Fix interlace check for H.264 MBAFF coded MP4 files' (#6222)

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Bond_009
2023-01-19 14:19:56 +01:00
parent d57dcf2245
commit 75fe640f2b
5 changed files with 380 additions and 35 deletions
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26
MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
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@@ -625,17 +625,6 @@ namespace MediaBrowser.MediaEncoding.Probing
return attachment;
}
/// <summary>
/// Determines whether a stream code time base is double the frame rate.
/// </summary>
/// <param name="averageFrameRate">average frame rate.</param>
/// <param name="codecTimeBase">codec time base string.</param>
/// <returns>true if the codec time base is double the frame rate.</returns>
internal static bool IsCodecTimeBaseDoubleTheFrameRate(float? averageFrameRate, string codecTimeBase)
{
return MathF.Abs(((averageFrameRate ?? 0) * (GetFrameRate(codecTimeBase) ?? 0)) - 0.5f) <= float.Epsilon;
}
/// <summary>
/// Converts ffprobe stream info to our MediaStream class.
/// </summary>
@@ -748,22 +737,9 @@ namespace MediaBrowser.MediaEncoding.Probing
stream.AverageFrameRate = GetFrameRate(streamInfo.AverageFrameRate);
stream.RealFrameRate = GetFrameRate(streamInfo.RFrameRate);
bool videoInterlaced = !string.IsNullOrWhiteSpace(streamInfo.FieldOrder)
stream.IsInterlaced = !string.IsNullOrWhiteSpace(streamInfo.FieldOrder)
&& !string.Equals(streamInfo.FieldOrder, "progressive", StringComparison.OrdinalIgnoreCase);
// 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 to determine if the file is interlaced
bool h264MbaffCoded = string.Equals(stream.Codec, "h264", StringComparison.OrdinalIgnoreCase)
&& string.IsNullOrWhiteSpace(streamInfo.FieldOrder)
&& IsCodecTimeBaseDoubleTheFrameRate(stream.AverageFrameRate, stream.CodecTimeBase);
if (videoInterlaced || h264MbaffCoded)
{
stream.IsInterlaced = true;
}
if (isAudio
|| string.Equals(stream.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)
|| string.Equals(stream.Codec, "gif", StringComparison.OrdinalIgnoreCase)