Nvidia Shield TV won't play 4k videos (or 4k HDR) in YouTube App.

Question

I can't find a setting to force 4k and when I hit the stats for nerds button, it says the following:

Dimensions: 1920x1080 *2 Resolution: 2560x1440@60 Optimal Resolution: 3840x2160@60

Also the HDR10 feature isn't showing on my TV as enabled when I hit info. Anyone else have this problem? My TV is a Vizio M50-E1

EDIT: HUGE thanks to /u/nooneisreal for telling me that my cable was too old. Turns out that there is a newer type of HDMI cable and the cable I had (probably 10-15 years old) wasn't correct. $7 fix and it's working great! HDR10 in 4k with some media in plex . Also thanks to /u/Mad1723 for informing me that HDR with youtube isn't supported yet.

Mad1723 · Accepted Answer

The app doesn't support it AFAIK (4K HDR)

nooneisreal · Answer

Which video? Or is it all 4K videos?

thorax · Answer

Thanks for posting this with the update! Was having the same problem and using a new cable solved it.

BiggussDikkuss · Answer

Is the Android Settings > Display > Screen Resolution selected to 4k2k60hz for starters ?

FranknStein7 · Answer

Is the video from your Shield TV passing through a receiver, or is it connected directly to your TV?