SOLVED: Jellyfin buffering... is my hardware acceleration working?

[RitzyMage]

1) Your kernel is not new enough.  Intel Arc requires kernel 6.2+.
---1a) If you were to run a newer kernel, you only need to worry about installing the intel-opencl-icd package.  Jellyfin-ffmpeg6 comes bundled with all the other Intel drivers you need.

2) HOWEVER, that doesn't matter since the log you shared shows that every video played was direct played.  So you won't see any usage in intel_gpu_top.

Are you using a reverse proxy?  If so, is it running on the same host as Jellyfin?

I am using a nginx on our host to proxy to jellyfin (so that we can connect using HTTPS on port 443).

And are you saying that if I upgrade my kernel, then the hardware acceleration should work?