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Add limiting max keyframe interval when full transcoding

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This commit is contained in:
Vasily 2019-10-09 13:46:01 +03:00
parent 986ea5c636
commit 2f6879e869
1 changed files with 12 additions and 0 deletions
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12
MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs
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@ -927,6 +927,18 @@ namespace MediaBrowser.Api.Playback.Hls
" -force_key_frames:0 \"expr:gte(t,{0}+n_forced*{1})\"",
GetStartNumber(state) * state.SegmentLength,
state.SegmentLength.ToString(CultureInfo.InvariantCulture));
if (state.TargetFramerate.HasValue)
{
// This is to make sure keyframe interval is limited to our segment,
// as forcing keyframes is not enough.
// Example: we ecoded half of desired length, then codec detected
// scene cut and inserted a keyframe; next forced keyframe would
// be created outside of segment, which breaks seeking.
keyFrameArg += string.Format(
" -g {0} -keyint_min {0}",
(int)(state.SegmentLength * state.TargetFramerate)
);
}
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;