How to install rffmpeg?

[Timekeeper]

My current setup for Jellyfin v10.9.3 is Truenas Scale Dragonfish using sandboxes. 
I followed this video here: https://www.youtube.com/watch?v=S0nTRvAHAP8
I have a jail with docker. Jellyfin is running on Dockge as a container using the Linuxserver.io image.
I do know there is a mod for rffmpeg for this image. Has anyone tried to do something similar to this? Thanks.

[TheDreadPirate]

Is your server not capable of transcoding locally?

[Timekeeper]

I'm able to transcode locally. Yesterday I stumbled across rffmpeg in the documentation and wondered if it was possible to use my main machine to do the transcoding instead.

[TheDreadPirate]

I've been told it is theoretically possible, but I'm not away of anyone successfully doing it nor do we have documentation to integrate it with Jellyfin.