auxinput
Are you streaming youtube from a device such as Roku or Amazon firestick? Like I said before, the youtube app on these really sucks and you get all the "lossy" type of audio and video from this. Computer web browser is superior, but if you're still getting "lossy" sound, then your computer audio system is not high enough level.YT sounds at least a bit lossy to me no matter how I stream it. Are you claiming your Apple TV yields lossless and hi-res from YT? Do you pay a premium to subscribe to that?