Question 4K firestick - how to tell if streaming in 4K?

[jguff330]

I picked up a Vizio px75 and got the 4K fire stick to go with it.
When I use the TV native apps like Netflix and YouTube, I can press the tv info button and it tells me what resolution is currently playing (like if my internet drops it will go down to 1080, and that info screen will reflect that). But on the firestick it just says 4K always, even if I’m watching a video that I know is maximum 1080 resolution.

I like to know for sure if it’s playing in 4K.

 

[Barty1884]

I don't think there's any way to reflect it simply by selecting info but it can be accomplished via System X-Ray.
It's not the most user-friendly way to accomplish this, but it's all that's available for Fire products AFAIK.
https://developer.amazon.com/docs/fire-tv/system-xray.html