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Tune x264/5 encoding params for realtime playback

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Some options that are too performance-intensive are disabled, while
others are left enabled to trade-off between real-time playback and quality.

Signed-off-by: nyanmisaka <nst799610810@gmail.com>
This commit is contained in:
nyanmisaka
2024-08-30 00:56:44 +08:00
parent 84bbe86fd2
commit d7be6a5ab0
2 changed files with 5 additions and 14 deletions
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6
Jellyfin.Api/Controllers/DynamicHlsController.cs
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@@ -45,6 +45,7 @@ public class DynamicHlsController : BaseJellyfinApiController
private const TranscodingJobType TranscodingJobType = MediaBrowser.Controller.MediaEncoding.TranscodingJobType.Hls;
private readonly Version _minFFmpegFlacInMp4 = new Version(6, 0);
private readonly Version _minFFmpegX265BframeInFmp4 = new Version(7, 0, 1);
private readonly ILibraryManager _libraryManager;
private readonly IUserManager _userManager;
@@ -1851,13 +1852,12 @@ public class DynamicHlsController : BaseJellyfinApiController
args += _encodingHelper.GetHlsVideoKeyFrameArguments(state, codec, state.SegmentLength, isEventPlaylist, startNumber);
// Currently b-frames in libx265 breaks the FMP4-HLS playback on iOS, disable it for now.
if (string.Equals(codec, "libx265", StringComparison.OrdinalIgnoreCase))
if (string.Equals(codec, "libx265", StringComparison.OrdinalIgnoreCase)
&& _mediaEncoder.EncoderVersion < _minFFmpegX265BframeInFmp4)
{
args += " -bf 0";
}
// args += " -mixed-refs 0 -refs 3 -x264opts b_pyramid=0:weightb=0:weightp=0";
// video processing filters.
var videoProcessParam = _encodingHelper.GetVideoProcessingFilterParam(state, _encodingOptions, codec);