Netflix movie frame stutter with Apple TV 4K

colinw123

macrumors member
Original poster
Jan 21, 2013
75
10
Hi,

For some time now if i watch any movies on Netflix using my Apple TV 4K i get the odd frame stutter throughout the film.

TV Shows are fine and silky smooth, it only seems to happen to the films.

I have frame rate set to enabled, and dynamic range set to disabled as i don't like HDR, so watch the 4k Netflix content in SDR.

Any ideas why this is happening at all please.


Thanks.
 

Sperious

macrumors newbie
Sep 29, 2019
18
9
Sweden
I believe this is because some of the original Netflix productions are shot at true 24.000 frames per second as opposed to the more common 23.976 frames per second that most movies and basically all tv shows are shot at. The Apple TV currently doesn’t support 24.000 fps. When the Apple TV is in 24p mode it is actually in 23.976p mode.

edit: Lots of info on this here:

 

archer75

macrumors 68030
Jan 26, 2005
2,702
1,235
Oregon
That's correct. Though some TV's can compensate for that. On my LG OLED I don't see any stutter in that content while others do.
 

Sperious

macrumors newbie
Sep 29, 2019
18
9
Sweden
That's correct. Though some TV's can compensate for that. On my LG OLED I don't see any stutter in that content while others do.
I do see stutter on my LG OLED B7. But I have deactivated every kind of image altering function on the LG. I’m currently letting the ATV switch frame rates based on the source material but I’m finding the LG extremely slow and buggy at switching frame rates.

I have tried setting the Apple TV to always output at 60p and turned on the correct settings on the LG to let it detect and adjust for 24p over 60p. It looks mostly fine, but every once in a while I feel as though the LG makes a mistake and I get a short moment of soap opera effect or stuttering.

I don’t find the function to be 100% reliable and so I’m stuck letting the Apple TV send the native frame rate to the LG and waiting several seconds for the TV to switch. Quite often something goes wrong and the LG hangs and shows the “no input” screen saver thingy. Then, after several more seconds it finds the signal again. I use the Apple recommended high speed Belkin HDMI cables.
 
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archer75

macrumors 68030
Jan 26, 2005
2,702
1,235
Oregon
I do see stutter on my LG OLED B7. But I have deactivated every kind of image altering function on the LG. I’m currently letting the ATV switch frame rates based on the source material but I’m finding the LG extremely slow and buggy at switching frame rates.

I have tried setting the Apple TV to always output at 60p and turned on the correct settings on the LG to let it detect and adjust for 24p over 60p. It looks mostly fine, but every once in a while I feel as though the LG makes a mistake and I get a short moment of soap opera effect or stuttering.

I don’t find the function to be 100% reliable and so I’m stuck letting the Apple TV send the native frame rate to the LG and waiting several seconds for the TV to switch. Quite often something goes wrong and the LG hangs and shows the “no input” screen saver thingy. Then, after several more seconds it finds the signal again. I use the Apple recommended high speed Belkin HDMI cables.
There is a setting related to motion that will fix that. I don't recall the name off the top of my head or what I have it set to. I'd have to look when I get home. But it fixes all motion related issues without introducing the soap opera effect. I have the B6.
 

BODYBUILDERPAUL

macrumors 68000
Feb 9, 2009
1,527
1,210
Barcelona
I got to admit I've enjoyed the ATV discussions on AV/AVSForums and read about this just today.
Any reason why Apple still have not implemented this 24fps auto detection?

And please Apple give iTunes films Dolby True HD. I'm really fed up of iTunes low volume, dull sound quality on films. It's a shame when YouTube vlogs sound more punchy and alive than what Apple still offers.