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Add option to extract keyframe only during trickplay image generation

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This would be significantly faster than decoding every frame, but it does have compatibility issues. Not all decoders support this mode, notably the VP9 decoder, CUVID decoders, and QSV decoders.

Some videos with very long key-frame intervals may also perform poorly with this mode, as the image timing could become too inaccurate to reflect the actual frame.

Signed-off-by: gnattu <gnattuoc@me.com>
This commit is contained in:
gnattu 2024-05-08 13:50:03 +08:00
parent c050abf3e8
commit 68bfabbaba
4 changed files with 15 additions and 0 deletions
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6
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@ -807,6 +807,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
int? threads,
int? qualityScale,
ProcessPriorityClass? priority,
bool enableKeyFrameOnlyExtraction,
EncodingHelper encodingHelper,
CancellationToken cancellationToken)
{
@ -862,6 +863,11 @@ namespace MediaBrowser.MediaEncoding.Encoder
inputArg = "-threads " + threads + " " + inputArg; // HW accel args set a different input thread count, only set if disabled
}
if (enableKeyFrameOnlyExtraction)
{
inputArg = "-skip_frame nokey " + inputArg;
}
var filterParam = encodingHelper.GetVideoProcessingFilterParam(jobState, options, vidEncoder).Trim();
if (string.IsNullOrWhiteSpace(filterParam))
{