Originally Posted by Omni009
Update on my ATV 4K issues, I was able to swap out the cable, but it made no difference. I was able to force output regular HDR rather than DV for the movies I was talking about, and just like with the non-DV movies I own, the regular HDR looks just fine. So it must be an issue with the DV on ATV 4K specifically. I just hope a new firmware or something can fix it.
In your original post, you mentioned “I'm using the same DV settings I use for my UHD player“. Do you mean that you’ve adjusted any of the settings of the DV mode in your TV away from their defaults...? If so, that
may be your problem.
I do agree that the photos show what appears to be OLED’s “near black artifacts” which would indicate that maybe you’ve attempted to tweak the “brightness” setting in your TV’s Dolby Vision mode and it is set too high.
Many users do not realize this, but Dolby works with each manufacturer, individually, to provide a custom Dolby Vision LUT intended to achieve optimum results from the Dolby Vision mode on each specific TV. Other than for disabling the artificial motion settings and picture enhancements (sharpening and/or noise reduction), the Dolby Vision “picture” settings should not be touched.
If this is indeed what has happened, I would suggest playing a DV title to activate the DV mode on your TV, then go into the “Picture” settings of your TV and reset the Dolby Vision mode to it’s default. You can adjust the motion settings and disable the artificial enhancements (that I mentioned above), but leave everything else alone.
Since physical discs and streamed content use different Dolby Vision "authoring" profiles, this might also be why one is exposing an issue while the other is not.
Since Dolby Vision is a locked “end to end” proprietary HDR system, an AVR can do nothing to the signal except pass it as it is. Your AVR’s processing should not present a problem as long as all of the specific HDMI 2.0 protocols are enabled within.