My GF has it set up on her iPad, phone, computer. App is on our TV and has no issues. We have Netflix at home. She’s non technical and hasn’t had any trouble once I gave her a login.
The only hiccup was when she tried to watch during one of her lectures. I had to explain that Jellyfin is only at home ;) (for now)
Tailscale got me outside-the-home Jellyfin with a grand total of maybe 30 minutes of effort, including signing up, getting my server connected, and getting it on my MacBook, AppleTV, and phone. I'd never used it before.
The pain just kept adding up. It was quite nice most of the time. But every single time I reached for my phone, I was wondering how badly it was going to go. Quitting Jellyfin seemed like an excellent choice.
Upnp/dlna is much cruder; very direct raw BubbleUPnP client. But it works so well for me. Their transcoding server also is quite good and I can run it on any machine I want, isn't coupled to anything, can switch between them easily.
Bubbleupnp is also great because it lets me turn tablets into cast screens. I love that so much. Good general protocols rock; having media server, media renderer, then separate control points was a great model, good job UPnP.
The fact that it has component video out makes it a swiss army knife for everything else 240p/480i/480p.
I'm wanting to set it up for around 20 households to share, and with transcoding that exceeds a single (cheap) node.
https://jellyfin.org/docs/general/post-install/transcoding/h...
The jellyfin DB itself is unfortunately sqlite instead of being DB agnostic. Maybe you could hack together something such that only one node handles writes and everyone else handles reads... if getting multiple cheap nodes gets your more bandwidth. I have to imagine that jellyfin fairly quickly stops being in charge of the media stream directly.
But yeah I think the transcoding and the size of your data pipe is the only "hard" part. The DB read/writes themselves are going to not be an issue (I think)
[1] https://jellyfin.org/posts/jellyfin-release-10.11.0/#the-lib...