diff options
Diffstat (limited to 'MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs')
| -rw-r--r-- | MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs index 39431a9fc..8ea0f58ea 100644 --- a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs +++ b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs @@ -871,6 +871,15 @@ namespace MediaBrowser.MediaEncoding.Encoder 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 var targetDirectory = Path.Combine(_configurationManager.ApplicationPaths.TempDirectory, Guid.NewGuid().ToString("N")); Directory.CreateDirectory(targetDirectory); @@ -884,7 +893,7 @@ namespace MediaBrowser.MediaEncoding.Encoder filterParam, outputThreads.GetValueOrDefault(_threads), vidEncoder, - qualityScale.HasValue ? "-qscale:v " + qualityScale.Value.ToString(CultureInfo.InvariantCulture) + " " : string.Empty, + qualityScale.HasValue ? "-qscale:v " + encoderQuality.Value.ToString(CultureInfo.InvariantCulture) + " " : string.Empty, "image2", outputPath); |