I tried another test to Airplay Dolby Vision/4K video from my iPhone 12 Pro Max. For this test, I am using the "Dolby Vision" logo that briefly appears at the top, right corner of the screen to indicate whether the video is streaming at 4K. I am assuming that when the logo appears, the video is 4K even if the "Info" section shows "HD".
I don't have an issue with Apple TV+, Netflix, or Disney+. I see the "Dolby Vision" logo appear for 4K content. My issue is with Amazon Prime, Paramount+, and Hulu. I could have sworn I had the problem with HBOMAX. It seems to work now. There was a recent update where HBOMAX changed their player. It now has compatibility issues with the Apple TV remote. But this is for another thread.
My test: From my iPhone:
- I airplay'd Star Trek Discovery to the Apple TV 4K 2021. The "Dolby Vision" logo did not appear.
- I airplay'd Star Trek Discovery to my LG CX. The "Dolby Vision" logo appeared.
When I tried this test with Hulu and Amazon Prime, the "Dolby Vision" logo did not appear on either. I think their iPhone apps might not stream 4K to mobile devices. I can't confirm this with Amazon Prime, but I can for Hulu. A 4K title on my Apple TV's Hulu app does not have "4K" in its description on their iPhone app.
Although "HD" appearing under "Info" is an Apple problem, I think not streaming the correct quality to get the "Dolby Vision" logo might be an issue for the streaming services like Paramount+, Hulu, and Amazon Prime where it doesn't appear as expected. Paramount+ only streams to some 4K devices. The 5th gen Apple TV 4K is one of them. Perhaps they need to update their code to recognize the Apple TV 4K 2021 model?
My Apple TV 4K 2021 video settings are:
- Format: 4K Dolby Vision
- Match content: Off
- Check HDMI Connection: Tested successfully for 4K video. My HDMI cable is HDMI 2.1and supports the higher frame rate.
And audio settings are:
- Audio Output: TV Speakers (I actually eARC from the TV to an integrated amp.)
- Audio Format: Auto, Atmos Available