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rKunda

macrumors 68000
Original poster
Jul 14, 2008
1,612
598
We just added an Apple TV recently so a new TV we bought. We're having an issue.

When watching a show, there's a flicker of static on the right side of the screen, uniformly from top top bottom, that extends in from the edge maybe 6 inches. It happens at regular intervals, but not on an exact time interval.
This doesn't happen when using the TV normally, but only the Apple TV. We did replace the HDMI cable just in case.

Anyone seen this happen?
 
What do you have the ATV set at as perhaps your TV doesn’t like what you’ve got it set to?
Does it happen if you set to 4KSDR with Match Dynamic Range enabled?
 
What do you have the ATV set at as perhaps your TV doesn’t like what you’ve got it set to?
Does it happen if you set to 4KSDR with Match Dynamic Range enabled?

I’ll need to check.
 
Something else worth doing is using the Check HDMI Connection tool that’s in Video and Audio Settings
 
does it only happen when watching videos?
does it also happen when in menus or games?

have you tried a different HDMI port on your TV?
are there any electrical cables running beside the HDMI cable, or in the area? try not to coil HDMI and power together

were both cables you tried the same?
when getting into 4k and HDR, your cable selection becomes a little more important. They don't need to be stupid expensive, but you also shouldn't grab them out of the bargin bin. they also need to be at least HDMI version 2.1, so if they've been sitting around for a few years, they might not work.

also just had a thought, is it about the same size as the control center? (hold down the TV button, it's what pops up when you want to shut the aTV down)
not sure what that means, but it might lead somewhere


as others have said, match rate and range in the video settings are both very important in getting you the closest to the original video,

without match range, it converts everything to what your main video setting is, so if you're in HDR, then everything is shown in HDR, Which can lead to over done colors when it up converts from regular video, since it's just being done by an algorithm.

without match rate, it can lead to a bit of stuttering in your videos. If the video is 24 frames/sec and the aTV is outputting 30 f/s then somehow it's got to do something to make up those 6 extra frames, so it will show some frames twice (1 2 3 4 4 5 6) which your eye will see, particularly in long panning shots.
 
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