Not sure if this applies to all hisense models or just the H8F, but would like to note that apps like VLC/Kodi/Plex (I tested all three) do not support true 4k playback likely due to their using custom video playback code. When displaying 4k test patterns all those apps fail, indicating they are rendering at 1080p and the display is then upscaling to 4k. The pre-loaded media player app passes the tests and seems to display 4k content in its original resolution. Additionally, other apps that use the native video player like Netflix, Amazon, Hulu, etc. do seem to support 4k playback, but seeing as I cannot view test patterns on them it's hard to verify. I have tried changing the android tv resolution over adb, and while this works to force the whole system to render in 4k it results in terrible performance and the test patterns still fail in apps not using the native player.
An easy way to see this for yourself is to adjust the size settings in one of the above apps and view in the original resolution (most of them default to something like 'best fit', choose an option like 'original', 'center', etc.) and you'll see the apps are playing back in a 1080p window, as 4k content will seem zoomed in and 1080p content will fill the screen. Using the same option on the native video player causes 1080p content to display in a 1920x1080 box in the middle of the screen as you'd expect.
Last edited by awfulbliss; 01-24-2020 at 06:44 PM.
Reason: More details