Tune x264/5 encoding params for realtime playback

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>

1 files changed, 3 insertions, 3 deletions

diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index 016c5b163..662e2acbc 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -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);