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Merge pull request #11675 from gnattu/fix-vaapi-mjpeg-parameter

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Fix quality parameter for vaapi_mjpeg
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Niels van Velzen 2024-05-16 19:04:34 +02:00 committed by GitHub
commit ddd5c302b4
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1 changed files with 10 additions and 1 deletions
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11
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@ -871,6 +871,15 @@ namespace MediaBrowser.MediaEncoding.Encoder
throw new InvalidOperationException("Empty or invalid input argument."); throw new InvalidOperationException("Empty or invalid input argument.");
} }
float? encoderQuality = qualityScale;
if (vidEncoder.Contains("vaapi", StringComparison.OrdinalIgnoreCase))
{
// vaapi's mjpeg encoder uses jpeg quality divided by QP2LAMBDA (118) as input, instead of ffmpeg defined qscale
// ffmpeg qscale is a value from 1-31, with 1 being best quality and 31 being worst
// jpeg quality is a value from 0-100, with 0 being worst quality and 100 being best
encoderQuality = (100 - ((qualityScale - 1) * (100 / 30))) / 118;
}
// Output arguments // Output arguments
var targetDirectory = Path.Combine(_configurationManager.ApplicationPaths.TempDirectory, Guid.NewGuid().ToString("N")); var targetDirectory = Path.Combine(_configurationManager.ApplicationPaths.TempDirectory, Guid.NewGuid().ToString("N"));
Directory.CreateDirectory(targetDirectory); Directory.CreateDirectory(targetDirectory);
@ -884,7 +893,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
filterParam, filterParam,
outputThreads.GetValueOrDefault(_threads), outputThreads.GetValueOrDefault(_threads),
vidEncoder, vidEncoder,
qualityScale.HasValue ? "-qscale:v " + qualityScale.Value.ToString(CultureInfo.InvariantCulture) + " " : string.Empty, qualityScale.HasValue ? "-qscale:v " + encoderQuality.Value.ToString(CultureInfo.InvariantCulture) + " " : string.Empty,
"image2", "image2",
outputPath); outputPath);