I just picked up a Shield TV to replace my Apple TV 4K, since I'm always frustrated by not being able to watch things in Google Play Movies (where we often rent movies and have a decent library). On the Shield, movies say they are 4K and HDR, but playback is only happening in 4K/SDR. I've checked the settings and it is set to use rec.2020. Anyone know what I'm missing?
Only the Chromecast Ultra and some Samsung TV's support hdr in Google Play Movies. It is a shame Google hasn't rolled this out to more devices.