I left Apple for Samsung S9, but I still have my Apple devices. Apple still hamstrings the user way, way, wayyyyyy too much for my preferences.. I forgot that I'm able to take UHD video with this device. I'll join together some video/audio and test for myself.
As for discs, I don't need beyond 1080p... I can already see "artist" affects I didn't see before accepting 1080p. LOL! (Yes, I do it when I type it..it's not just a something to type..) "Wall-E" was why I decided 1080p is pretty cool as an example for movies. But beyond that; Mars and other non-dramatic stuff rocks.