SOLVED: HW acceleration not working – M4 Mac Mini

[Erlend]

Hi! This Friday I got my M4 Mac Mini – and (among other things) I'm trying to get it to work as a media server. After being on Plex, I wanted to give Jellyfin a try. And setup has almost been perfectly smooth.

Everything works as expected, but I can't get HW acceleration to work.

I've followed the guide here, but when I do the test (running a video in a browser client, and taking down the bit rate) I get the "ffmpeg uses 600% CPU" thing. Any advice?

I'm not quite sure where I should start troubleshooting, heh. 

• I've tried to restart Jellyfin a couple of times.
  
• Also restarted the Mac running the server.
  
• And I've tried a couple of different media files.
  

I'll add an image of my settings as well. I won't claim to know what everything means – so maybe I've turned on (or off) something stupid? :P

Thanks!
-Erlend