High CPU usage on FFmpeg after 10.11 causing buffer underrun.

[Whosondephone]

High CPU usage on FFmpeg after 10.11 causing buffer underrun.

First off I have to say Jellyfin has been the the easiest to set up and most perfect software I have used.  By a large margin. 

I'm running it on a low clocked Intell core 2 quad I pulled out of the trash.  My OS is Debian Trixie.

The client is an LG CX OLED

I only use transcoding for DTS audio.  This same stream used to playback flawlessly on version 10.9.1  The video stream is 4K Dolby Vision HDR.  The Audio is 7.1 DTS stream.

I'm not sure if this is related but I recently tried to build MakeMKV with FFmpeg using the high quality AAC library. I tried to uninstall FFmpeg using apt and still have the issue. 

I had issues with the upgrade to 10.10 so I purged Jellyfin and started fresh.  The 10.10.1 update hasn't resolved the issue either.

Was there a change to Jellyfin's FFmpeg implementation?  Perhapse my machine is too old to run the latest version.

[Fate]

possibly it does more transcoding in the new version..

hard to tell, do you have transcoding logs of a working and a non working stream?