Torrents indicate their resolution, and usually bitrate too.
But keep in mind, while it might say the resolution in the name, that doesn’t mean it’s not compressed to all hell. You’ll want to also check the file size and runtime to estimate the quality.
It runs just fine for me on Android 14. I don’t remember if it found the other devices automatically, but setting them up manually is trivial too. And devices can inform each other about each other if you enable it.