SOLVED: Movies Won't Stream, Getting "Server Error"

[LLStudio]

I was having some trouble with ffmpeg. It says I have ffmpeg version 6.1.1-3ubuntu5, but I don't think that was the jellyfin specific library. Trying "sudo apt install jellyfin-ffmpeg6" as suggested from another forum post tells me that it cannot be found, and the generic .deb files don't mention noble. It sounds like the solution I need is in that post, but I can't figure out what command to put in the terminal or line to edit from the post.

https://forum.jellyfin.org/t-ubuntu-24-0...ort?page=2

edit: I installed it using the directions here: https://jellyfin.org/docs/general/instal...eric-amd64