norambna

What team? He wrote he was the only one working on Nova for the past year.

Yes, Kodi (via LibreELEC) and then JellyCon on top.

For other Amlogic ARM devices, like the Minix U22X-J (Max) or Ugoos AM6+ I mentioned above, CoreELEC is the LibreELEC alternative.

Chances are very high that Kodi will detect your own TV's remote and you can use that! https://kodi.wiki/view/CEC
If that doesn't work, there are many cheap options.

I also use the official JellyFin client on my android phone with MPV as player and that also works perfectly fine. And the Jellyfin Media Player on my laptop is also flawless.

In my experience, the older Chromecasts are probably the only clients with problems.

If I had to buy a client device, I'd probably go with a Minix U22X-J (Max) or Ugoos AM6+ https://discourse.coreelec.org/t/amlogic-ng-and-dolby-vision/24738

I've been using Jellyfin for over 2 years. My main clients are a Raspberry 4 and a Raspberry 5 using Kodi + the Jellyfin plugin. This combo has been flawless.

I also have an older Chromecast and I experience there similar problems with subtitles.