I installed Jellyfin player on my television. On the computer I can access Jellyfin via its web service. On the phone I have the app. I used it mostly to do refreshes of the library, not really to play anything
Discussion
Check out Kodi with it's jellyfin addon. It adds all the eye candy & intuitive UX the big players have to the client experience, with a ton of customizability. If your computer is linux, it's an easy install. On a TV it needs a separate device...
Worth it if you have a large library though & enjoy cinema a lot.
Not worth it if you primarily value privacy (but it still has added value IMO).
🤝
What type of device is needed for the tv?
"A linux device" was my starting point. A pi 4b worked, but was slow navigating. A minimally beefier NUC does the trick and is ehat I use now. I used an old laptop for a friends setup, and helped set it up on a steamdeck for another friend.