Hey all, very recently I’ve been having an issue where my Apple TV 4K will work fine for a few minutes but then it will keep turning black for a second and then keeps saying “Dolby Vision” on and off. It seems to be a software issue since it worked fine until the new update. Has anyone else had this?
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Random black flicker currently Dolby Vision
- Thread starter bendrumin
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the dolby vision badge is probably coming from your TV, and not the aTV
It's showing that the signal coming into the TV has changed from something else to dolby vision.
In your case it might be from "unknown" to dolby vision.
I've not had problems, or seen others mention any about video signals
you might want to go in and verify all of your video settings in the aTV, as the recent updates have seemed to change settings on their own.
Try reseating the HDMI cables. (fully unplug and plug both ends back in)
you can also try unplugging the TV and aTV from power for a few seconds.
In the aTV video settings, if you've upped the chroma to 4:4:4 or changed other settings, you might be running into issues with a slower speed HDMI cable, so a new cable might help. (don't go buy a new cable as the first thing you try)
If you changed which HDMI port on your TV the aTV is plugged into, normally HDR has to be enabled on a port by port basis, so you might need to verify those settings also.
If you've never seen the dolby vision badge before, I suggest turning on match rate and range in the video settings on the aTV. If you've got it set for DV, and have matching off, then everything is playing in dolby vision. Which means that the aTV is having to convert everything, which can lead to blown out and over saturated colors when coming from a SDR source, since it's just doing it by a formula, and not with human guidance of what it should look like.
Matching rate can help smooth out some videos. If your video is 24 frames/sec and the aTV is outputting 30 f/s then the aTV will have to put a few frames out twice to make up the difference.
The frames displayed on the TV will be - 1 1 2 3 4 5 6 6 7 8 (just an example, not sure of the actual numbers)
on certain shots, like a wide panning landscape shots or others with long smooth motion, Your eye will see that double frame as a slight stutter. (tech term is judder)
It's showing that the signal coming into the TV has changed from something else to dolby vision.
In your case it might be from "unknown" to dolby vision.
I've not had problems, or seen others mention any about video signals
you might want to go in and verify all of your video settings in the aTV, as the recent updates have seemed to change settings on their own.
Try reseating the HDMI cables. (fully unplug and plug both ends back in)
you can also try unplugging the TV and aTV from power for a few seconds.
In the aTV video settings, if you've upped the chroma to 4:4:4 or changed other settings, you might be running into issues with a slower speed HDMI cable, so a new cable might help. (don't go buy a new cable as the first thing you try)
If you changed which HDMI port on your TV the aTV is plugged into, normally HDR has to be enabled on a port by port basis, so you might need to verify those settings also.
If you've never seen the dolby vision badge before, I suggest turning on match rate and range in the video settings on the aTV. If you've got it set for DV, and have matching off, then everything is playing in dolby vision. Which means that the aTV is having to convert everything, which can lead to blown out and over saturated colors when coming from a SDR source, since it's just doing it by a formula, and not with human guidance of what it should look like.
Matching rate can help smooth out some videos. If your video is 24 frames/sec and the aTV is outputting 30 f/s then the aTV will have to put a few frames out twice to make up the difference.
The frames displayed on the TV will be - 1 1 2 3 4 5 6 6 7 8 (just an example, not sure of the actual numbers)
on certain shots, like a wide panning landscape shots or others with long smooth motion, Your eye will see that double frame as a slight stutter. (tech term is judder)
Yeah, I also think it’s a problem with your TV and not the Apple TV.
I had a very similar issue a year ago where the screen would suddenly go black after a few minutes. It turns out the motherboard in my TV was going bad. After I had that replaced the problem went away.
I had a very similar issue a year ago where the screen would suddenly go black after a few minutes. It turns out the motherboard in my TV was going bad. After I had that replaced the problem went away.
Did you ever solve this? This is driving me absolutely nuts. I've spent over $150 swapping out HDMI cables.