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Enable Rockchip MJPEG encoder for Trickplay (#12610)

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Nyanmisaka
2024-09-09 23:24:45 +08:00
committed by GitHub
parent 0d85af019c
commit 36d934f4c0
3 changed files with 34 additions and 20 deletions
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29
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@@ -896,21 +896,30 @@ namespace MediaBrowser.MediaEncoding.Encoder
throw new InvalidOperationException("Empty or invalid input argument.");
}
float? encoderQuality = qualityScale;
if (vidEncoder.Contains("vaapi", StringComparison.OrdinalIgnoreCase))
// 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
var encoderQuality = Math.Clamp(qualityScale ?? 4, 1, 31);
var encoderQualityOption = "-qscale:v ";
if (vidEncoder.Contains("vaapi", StringComparison.OrdinalIgnoreCase)
|| vidEncoder.Contains("qsv", 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;
// vaapi and qsv's mjpeg encoder use jpeg quality as input, instead of ffmpeg defined qscale
encoderQuality = 100 - ((encoderQuality - 1) * (100 / 30));
encoderQualityOption = "-global_quality:v ";
}
if (vidEncoder.Contains("videotoolbox", StringComparison.OrdinalIgnoreCase))
{
// videotoolbox's mjpeg encoder uses jpeg quality scaled to QP2LAMBDA (118) 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 = 118 - ((qualityScale - 1) * (118 / 30));
encoderQuality = 118 - ((encoderQuality - 1) * (118 / 30));
}
if (vidEncoder.Contains("rkmpp", StringComparison.OrdinalIgnoreCase))
{
// rkmpp's mjpeg encoder uses jpeg quality as input (max is 99, not 100), instead of ffmpeg defined qscale
encoderQuality = 99 - ((encoderQuality - 1) * (99 / 30));
encoderQualityOption = "-qp_init:v ";
}
// Output arguments
@@ -926,7 +935,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
filterParam,
outputThreads.GetValueOrDefault(_threads),
vidEncoder,
qualityScale.HasValue ? "-qscale:v " + encoderQuality.Value.ToString(CultureInfo.InvariantCulture) + " " : string.Empty,
encoderQualityOption + encoderQuality + " ",
vidEncoder.Contains("videotoolbox", StringComparison.InvariantCultureIgnoreCase) ? "-allow_sw 1 " : string.Empty, // allow_sw fallback for some intel macs
"image2",
outputPath);