Error when transcoding after updating proxmox (Jellyfin)

[rcv11x]

hi, i have updated proxmox and before jellyfin worked fine and transcoded if necessary, now when i play something it tells me that the media is not compatible, and in the transcoding log i get this error, what could have happened, has it broken something?

note: jellyfin I have it with lxc and I installed it with the tteck script.

error_log.txt

[tteck]

Recheck FFmpeg path: /usr/lib/jellyfin-ffmpeg/ffmpeg

[iodize6399]

I corrected a syntax error and executed to no avail

root@jellyfin:~# adduser $(id -u -n) video && adduser $(id -u -n) render
The user `root' is already a member of `video'.
The user `root' is already a member of `render'.
root@jellyfin:~# ls -l /dev/dri/
total 0
drwxr-xr-x 2 root root           80 Jan  1 01:20 by-path
crw-rw---- 1 root video    226,   0 Jan  1 01:20 card0
crw-rw---- 1 root ssl-cert 226, 128 Jan  1 01:20 renderD128

root@jellyfin:~# chgrp render /dev/dri/renderD128
root@jellyfin:~# ls -l /dev/dri/
total 0
drwxr-xr-x 2 root root         80 Jan  1 01:20 by-path
crw-rw---- 1 root video  226,   0 Jan  1 01:20 card0
crw-rw---- 1 root render 226, 128 Jan  1 01:20 renderD128

[tteck]

Aww... I see.

chown root:render /dev/dri/renderD128
chmod 0660 /dev/dri/renderD128

[iodize6399]

root@jellyfin:~# ls -l /dev/dri/
total 0
drwxr-xr-x 2 root root           80 Jan  1 15:07 by-path
crw-rw---- 1 root video    226,   0 Jan  1 15:07 card0
crw-rw---- 1 root ssl-cert 226, 128 Jan  1 15:07 renderD128

root@jellyfin:~# chown root:render /dev/dri/renderD128
chmod 0660 /dev/dri/renderD128
root@jellyfin:~# ls -l /dev/dri/
total 0
drwxr-xr-x 2 root root         80 Jan  1 15:07 by-path
crw-rw---- 1 root video  226,   0 Jan  1 15:07 card0
crw-rw---- 1 root render 226, 128 Jan  1 15:07 renderD128

Still doesnot persist after a host reboot.

[shaulbarlev]

This is my workaround to solve the renderD128 group changing from render:
Do the following inside the Jellyfin LXC:
crontab -e
add this to the end:
@reboot chgrp render /dev/dri/renderD128

let me know if this helped
cheers

[DoTheSneedful]

Try sudo adduser jellyfin ssl-cert then restart the CT

Quite frankly I don't know why /dev/dri/renderD128 has that group but I assume it's related to proxmox setting up the GPU passthrough. Adding the jellyfin user to that group fixed this for me and it survives CT/host restarts without needing to do anything else.

[tteck]

Need testers #2523 (comment)