1 files changed, 6 insertions, 0 deletions
diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index 429cc542c..329dd2c4c 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -1760,6 +1760,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         {
             args += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture);
         }
+        else if (state.AudioStream?.CodecTag is not null && state.AudioStream.CodecTag.Equals("ac-4", StringComparison.Ordinal))
+        {
+            // ac-4 audio tends to hava a super weird sample rate that will fail most encoders
+            // force resample it to 48KHz
+            args += " -ar 48000";
+        }
 
         args += _encodingHelper.GetAudioFilterParam(state, _encodingOptions);