Unfortunately I can’t help in that regard. I keep everything local/unexposed so my solution for them was just running Jellyfin at their place. I was already rsyncing some stuff to a NAS I set up for them (and vice versa), as off-site backup. Since the files were already there it made the most sense to just give them their own instance.
I don’t have the link(s) on hand but there’s a Tizen build of Jellyfin for Samsung TVs. It runs rather slow on my old tube so I wouldn’t recommend it outside of a last resort. It’s actually smoother for me to just open the app on the TV and then remote control it from a browser/app on another device (my Steam Deck is my homelab universal remote). But you can use the Tizen dev tools or a simpler docker container to push it to the TV.
For my folks I got a cheap Walmart brand Android box (Onn 4k Plus). I installed Jellyfin from the app store then black hole’d the thing because I’m wary of cheap Android apps and their history of supply chain attacks. It’s much more responsive and also leaves me with the option of installing additional stuff like Smart Tubes, Retro Arch and whatnot.
I remember him being gifted a golden pager and I’m still holding out hope that he gets the call.