Watch Vincent Teoh's explanation and comparison of Apple TV Dolby Vision vs Dolby Vision converted in real time to HDR10. It's worth watching to the end.Wait, what Netflix does is different: I can understand that they have the contents at their best (DV) and they convert server-side to HDR10 if the device is not capable to play DV. That’s what I see through my firestick or Panasonic 820, without doing any conversion player-side.
Are you saying that ATV plays instead always DV version and converts it real-time to HDR10? And it does it in a wrong way by presenting wrong metadata?
Is that true for any provider? Amazon prime video, Disney +, etc.?
Why it doesn’t just select the most appropriate version according the device?
Amazon has very little Dolby Vision content. As for Disney+, I don't know. I keep meaning to spend some time with Xcode so that I can view the Apple TV developer menu like Vincent does where it displays the source as Dolby Vision even for the HDR10 output.