

Streaming remotely via tailscale is fairly easy. Cloudflare tunnel apparently works too, although it is against their ToS.
Can’t speak for Apple TV though. Setting up clients on Android based systems is as easy as entering the server address and then logging in.
The jellyfin service was super easy to set up. I just set up the container in Unraid and was done with that. Took me a minute or two.
Some Synology devices aren’t capable of dealing with docker containers. Just to keep that in mind.