If you want to serve multiple resolutions and bitrates you will probably want hardware that can do transcoding. However basically any graphics card (even integrated) will be able to transcode a video stream in real-time at a decent quality.
(If you wanted you can try to pre-transcode offline, but Jellyfin doesn’t support this well)
atzanteol@sh.itjust.works 6 months ago
Or streaming to a device that doesn’t support your encoding. Something like an android tv that isn’t as flexible and may need on the fly transcoding. You can be careful to select a well supported encoding on the server if needed.