Apple TV no surround Sound

[TheDreadPirate]

For each of these log files, what device is playing which? Not that it makes much of a difference, which generation Apple TV 4k?

For the record, Apple TV's don't support DTS anything. 3 of the logs the DTS or Dolby Digital is being transcoded to 5.1 AAC. Your Apple TV should be playing that back as proper surround sound. The last one, for House of the Dragon - S01E02 is, already AAC stereo.

And Air Play does support casting surround sound. IMO, this might be a bug in the Apple TV client.

BTW, which jellyfin client are you using? Both on your phone and Apple TV.