Transferring to a new server

[TheDreadPirate]

Correct. We bundle all the Intel media and openCL drivers with our docker image. Intel deprecated support for kernel 4.4.X for the Intel compute runtime that was bundled with 10.9.0+.

The best option, IMO, is to use your NAS as just a NAS and have Jellyfin run on a PC. Even something like an Intel N100 equipped mini PC. That way your OS isn't locked down like DSM is.

Your other option is to use the linuxserver docker image since you can specify a specific version of the Intel compute runtime you want to install. So you could install an older compute runtime that still supports kernel 4.4.X. But the official Jellyfin image and linuxserver image are not easily interchangeable so you may have issues migrating your existing data to the linuxserver image.