iPad Pro Letterbox bars are not completely turned off on new M4 iPad Pro, in YouTube app.

[The Cockney Rebel]

I would have thought they’d be completely black, as it’s OLED?

 

[casperes1996]

They would be if YouTube sent 0,0,0,(0/1) RGBA to the display engine. If YouTube doesn’t send a black signal just a very very dark grey then they will be on.

 

[Sheepish-Lord]

Check to see if “ambient” mode is on in the settings while playing the video. That’s usually it.

 

[nepalisherpa]

I would have thought they’d be completely black, as it’s OLED?

Play any video, click on the little gear icon on top-right corner, go to Additional Settings, and turn off "Ambient mode".

 

[The Cockney Rebel]

It’s daytime now, but I turned off Ambient Mode, and it looks better.

Thanks.