How do I know what resolution is being displayed?

[Mark Tiede 2]

So I got an Xbox One X which has games that display 4k.  And also the YouTube app displays 4k videos.  How do I know that I have everything set up correctly and the TV is ACTUALLY displaying 4k video mode?

Sometimes even HD looks really good and I haven't watched 4k stuff to know if I'm really seeing it.

It would be nice if there were an option in the TV for displaying the actual resolution in the corner or something.  I tried to set things up through my Denon AVR X2000 receiver and the Xbox complained about the TV not being able to do 4k.  I don't know if I had something set up wrong or not, so I just hooked the Xbox up to the TV in hdmi 1.  And I think the Xbox THINKS it is now capable of at least SOME 4k, but it would be nice to verify that the TV is doing what I think it is doing.

Anybody know an app or something that would help?

 

oh, I DID see a "+HDR" on the screen for a moment at some point.  Don't remember what triggered it nor how to get it to display it again.

[Mark Tiede 2]

Ah, I got it.  I don't usually use the LG remote since I have the Logitech Harmony Elite to control all my devices, but apparently there is one thing it may do that the Elite does not.  If I click on the picture, then the SOURCE shows up in the upper left corner.  If I click THAT, then it shows the actual resolution, hdr, etc. 

THAT was what I was looking for!