SOLVED: Problem with hardware encoding in Docker

[auxin7]

Ok, the missing firmware pointed me to the right direction. I came upon this post:

https://unix.stackexchange.com/questions...odule-i915

So I ran

sudo apt-get install firmware-linux

and

sudo apt-get install firmware-intel-graphics

After that i rebooted the system and the commands from the Jellyfin instructions came back postive/green.

When using OpenMediaVault you can also get the Apt-Tool plugin and to it via the web-interface