A lot of newer Android-TV-Settop-Boxes are ready for AV1, for example products from Orbsmart.de like my Orbsmart S87L.
On that box is Kodi preinstalled and you can install everything from android-stores, also the Jellybin-client.
Don't forget: Jellybin is a very good open-source-software, but a client-server-system. So you need Hardware for the server-software.
Jellyfin 10.9 Coming Soon! (lemmy.ca)
Release target is tentatively mid April according to here..