Dolby Vision content displaying distorted since tvOS 12.4 update.

I’ll try to test out the replugging of HDMI as others have said this helps but wouldn’t I need to pause the movie on the problem scene to see if it worked and, if I change inputs, wouldn’t the Apple TV force me to run the Dolby Vision test again?

I've been digging into this a bit over the weekend. I can also see the problem in Lost in Space s01e04 on the AppleTv netflix app. On my TV's netflix app it plays without any issue. I plugged in an FireTv 4k stick which also supports DoblyVision and the episode plays without issue in DolbyVision.

It seems highly unlikely that Netflix have a specially encoded apple version of the show sitting on their servers - so it would be fair to conclude that the problem is not with the TV or the encode but with the AppleTv hardware/software introduced around 12.4 update. I think short of apple issuing an OS fix, there's nothing we can do.

I think you’re right and I won’t hold my breath on Apple fixing it any time soon.

We seem to be in a minority with this issue.

Oh well, they lose a sub for ATV+ from me since the problem is more apparent there than anywhere else.

I was also able to pause my Apple TV on a scene with a raised black/color error, unplug and plug back in the HDMI cable from back of the Apple TV device and it did fix the problem until I changed content or tried playing the same scene again. I also tried a another certified cable and different HDMI ports on the TV and got the same behavior.

Interesting, but what does it mean?

Just bought an Apple 4k TV to go with my new Sony Str dn 1080 Atmos receiver, as iTunes has the most Atmos content. Unfortunately I have the exact same issue as you guys on my Sony A8F DV certified TV. Have isolated all possibke causes - it's definitely the Apple 4k TV...

I have to say, I dont think even the 'fixed' image is correct (on mine at least), its just better than the bad image. The shadows are blocked up and have a blueish tinge to them. Just my observations. Hard to tell as I've not seen it as 'correct'

Since I think we’ve established that no one has issues with DV via the smart TV apps ie Netflix but all issues seem to be anything running from ATV through HDMI, can we say that no one has had any issues running DV from any other source through HDMI ? Just to be sure it’s definitely isolated to ATV hardware/software?

As far as I can tell, reading all the threads from different places I could find this issue on, the problem seems isolated to Dolby Vision content from Apple TV+, iTunes content with Dolby Vision (only certain titles as far as i can tell) and certain Dolby Vision videos on Netflix (Lost In Space as an example).

All of these issues are when using the Apple TV 4K as the streamer.

I had the same problem with the Dolby Vision iTunes copy of Once Upon Time in Hollywood as posted previously. Dark scenes throughout would bloom off and on and it became unwatchable, so I had to finish by watching the Blu-ray. It even happens at the beginning of Apple's own Morning Show -- it became so annoying that I just turned it off. I thought it might be my new TV, which supports DV, but apparently not. I have have had no issues with DV in Netflix and Disney+, so it has to be an Apple issue. Severely disappointing.

before and after reseating HDMI

I have the exact same issue, Everything was fine until TVOS 12.4 UPDATE!! , I HAVE AN LG 70UH700V, FIX THOIS!

It happens to me also. I recently bought an Apple TV 4K. It happens not only the trailers but in the series on Apple TV +. My tv is also an LG UH850. It is unacceptable and needs fixing ASAP!

I think it’s more than that. Yesterday I noticed it in the Punisher series too on Netflix!

Running Beta OS on my apple TV and the bug is still in 13.3. So not sure if this is a backend apple problem or a bug in their latest os..

Actually, I am not sure that’s true. The Apple TV status and the TV clearly reflect that the content through AirPlay 2 is Dolby Vision.