I have YouTube version 2.12.01 that was released on August 14, 2022 pursuant to the app info in the App Store on my Apple TV 4K, second generation. But when I play A video that states it is either 4K or 8KHDR, the settings dialog on my Sony TV does not show that it is playing at HDR. Normally, when I hit the settings button on my Sony TV and bring up the dialog box on the right side of the screen, an HDR source will show HDR in the top right corner of the settings dialogue. That is not happening with YouTube on my Apple TV.
Further, when I pull up the stats for nerds, it is showing the color SBT 709 and not BT 2020. So the question is how do I enable HDR through YouTube on my Apple TV. Or, is it actually playing but that the TV is not showing it as HDR.
Could it be that the version dated August 14 as broken HDR on Apple TV? I’m not sure I understand what’s going on with this. I do have the premium YouTube subscription. Not that should make a difference.