After going through all the video apps, it would appear Netflix is the only one that allows you to change the video playback quality.
HBOGo doesn’t
Amazon Prime Video doesn’t
CBS All-Access doesn’t
CW doesn’t
Hulu - I don’t have the service, so IDK
On 4K Streaming; from my experience, a Dolby Vision 4K UHD movie, streamed, has about the same picture quality a regular HDTV Blu-Ray.
However, the Apple TV itself doesn’t support Dolby Atmos or DTSX, so iTunes Movies don’t either. If you’re heard movies with these sound formats, you know there’s just no comparison to Dolby TrueHD and DTS-HD. Moreover, there’s no 3D versions on steaming. I still love 3D and ALWAYS opt for 3D over 4K. 4K seems more like a gimmick really, as you have to squint hard and really pay attention to notice the difference between it and regular HDTV.
I mean, I’m willing to bet that the reason HDTV’s aren’t getting HDR, is because people would realize there’s no reason for 4K.
Therefore, quality coupled with data caps, means I’ll be buying physical media for the foreseeable future. Even if I have to buy for foreign counties. I mean, I already had to buy a British region B Blu-ray player to watch the remastered Terminator 2: Judgment Day 3D Blu Ray that came out December 5th 2017. Only the 4K version came to the States.
