I have a vps where I host a few things and I tried adding jellyfin. It worked and while scanning media railed the CPU/ram, once it was done everything was smooth. However, despite having all dependencies a bunch of videos didn’t play. I also don’t need the music and ebooks side of jellyfin as I’ll be using other things for those (funkwhale for music, still looking into the books and comics ) So, which self hosted alternatives do I have for videos and books/comic books? I need things that only do that but don’t well. The video one needs to have a client I can install on a android device I have plugged ony tv
You probably just need to transcode your videos to match whatever client you’re watching on. I run jellyfin from a raspberry pi without any problem once things are encoded properly.
For books and manga I use calibre-web, having used Calibre for a while before self hosting.
This is what I suspect too. Maybe OP has a weak server or they don’t have transcoding turned on and have a file that’s incompatible with the client they’re trying to play media on.