Dolby Vision content displaying distorted since tvOS 12.4 update.

I’ve found a work around for my LG 65UH8500. When a Dolby Vision show or movie starts playing from iTunes or Apple TV+ (I have Apple TV video set to 4K HDR @60Hz and Match Dynamic and Frame On), I pause the show or movie and turn off and back on the HDMI Ultra HD Deep Color option of the HDMI port where I have my Apple TV connected t (TV Settings - All Setting - General - HDMI Ultra HD Deep Color). The TV has to restart when you turn the option off and then again when you turn it back on, so the Auto Power Sync option has to be turned off too (TV Settings - All Setting - General -Simplink - Auto Power Sync). After doing this, the dark images and all content is shown correctly and I have to say it looks superb. Dolby Atmos also works perfectly. Of course, it’s a pain to have to this every time a Dolby Vision show starts, but at least you can enjoy shows and movies without downgrading to HDR 10. Hope it’s helpful and Apple, please fix this soon!!!

Hi,

On the Philips tv it’s the following procedure.

• Pause the movie on the Apple TV
• On the Television go to Frequent Setting > All Settings > General Settings > HDMI Ultra HD
• Set the port to STANDARD  the display will switch to HDR
• Set the port back to OPTIMAL the display will switch to Dolby Vision    
• Resume the movie

A bit of a pain to have to do but I’ve tested it on a few problem titles, and it seems to eliminate the issues. Hope that helps.

All Dolby Vision content on Apple TV is affected for me. Try watching the first two minutes of Daredevil Season 3 Episode 3. The scene where Fisk is in the bullet ridden car after it pulls up to the hotel is awful. I have an LG 75UH8500.

Apple is aware of the issue and is theoretically working on a fix. They had me send them videos of the files so the engineers could see them. If you call make sure they bump you up to a senior tech because the person answering the phone might not be aware of the issue.

Thanks for that tip about turning off HDMI Ultra HD Deep Colour off then back on, romorg.

I tried watching the Matrix again using this method and Dolby Vision displayed correctly once this trick is applied. My TV is an LG UH850V.

I have been told by customer support they are aware of this fault, but still waiting on a future update.

I have an update for the problem. I have an LG TV UH850V model as I have previously posted and I tested my iPad Pro with a USB-C to HDMI 2.0 converter by Apple and guess what no problem with the Apple TV+ content! So the problem must lie in the Apple TV 4K software or hardware and not on the iTunes or Apple TV+ Dolby vision encoding. The problem is there for months and Apple had done nothing to fix this.

I called this in last week as well and have an active case open with Apple. Received a call back today stating that engineering is most definitely aware of the overall issue and working to resolve. Remember, the more people that call in for case numbers, the more traction it will get. Thanks.

I can confirm this is a bug with iTunes content specifically. On my 2018 Vizio P series I have no trouble with Dolby vision on any other input device or app except for Apple TV’s movie rental or tv show content. The Dolby vision content through Apple results in dark scenes being totally distorted, crushed blacks, and all around painful on the eyes. It’s such garbage I had to set the Apple TV to 60hz HDR10. The only way to rectify the issue is to disable Dolby vision on the Apple TV. Again, This is not a problem on my Xbox or built in smart TV apps. It only happens on the Apple TV and only on the Apple content specifically (not Netflix etc).

i guess Apple just doesn’t care to fix it? This bug is clearly known to them and has been around for almost a year now by measure.

Really sad how buggy Apple has become. Latest Mac OS is so buggy I switched to Windows 10. Shame. Steve Jobs would have never tolerated it. RIP.

I think my Dolby Vision has been fixed skin the new update! The blur and yellow tint seem to be gone.

im on the beta update 13.4

You can also try pausing the program, unplug and then plug the HDMI back in on the TV or Apple TV device side to temporarily fix it.

Yes. Apple all but admitted it was 100% related to its firmware update. It has to be. My fire TV displays and native TV apps display Dolby Vision just fine. I’m not sure what Apple Is doing with their Dolby Vision, but it is a bit frustrating that a $35 dollar Amazon dongle works perfectly and the $180 ATV is buggy. If I didn’t own so much iTunes content I’d just use the Fire TV and my problem would be solved.

Yes, the iPad Pro plays Dolby vision (Lights up the Dolby vision logo) content with no distortion in my tv with the adapter. The Apple TV however has the distortion problems that other people have.

No. I’m running 13.1.1. I have a ticket in, they think it is a firmware issue but are awaiting confirmation from the engineers.

Romorg, thanks for posting that work around. I can confirm this works on my Philips 55PUS7304

set as well.

half a year has passed since original post and people (incl. me) still experience frustration on buying Dolby Vision enabled TVs to discover that AppleTV 4K doesn't deliver Dolby Vision promised by Apple even on their own shows. blame it on cables, Apple, as you do, nice try

I’m sorry. You are correct that’s what I meant.

my image is t a little blurry on Apple TV app, iTunes movies, movies anywhere and vudu. But on the tv built in apps everything is clear.

top pic is Apple TV bottom pic is tv built vudu app