Devices: Hisense H8C, Nvidia Shield TV
Main Problem: Youtube not playing 4k content.
Side Problem: Confused over HDMI ports.
I have 4 HMDI ports on the Hisense H8C. This is what is said about them in the manual,
This 4k TV has two different software versions of HDMI ports to connect HDMI-enabled devices. The two high-powered HDMI version 2.0 (HDMI 3 , HDMI 4) inputs enable you to connect ultra-HD external devices that require more bandwidth to transmit to the TV screen. For example, if you have and Xbox or Blu-ray player that supports the 2.0 standard. The two HDMI version 1.4 inputs are great for any of your external devices that support a standard full high-definition resolution of 1080p.
Cool, I understand that. What confuses me are the labels for the ports. HDMI 1&2 are labeled "4k@60Hz." HDMI 3&4 are labeled "4k@30Hz." Does this not seem to contradict what was said about the ports? Specifically that HDMI 3&4 are the 2.0 inputs?
I have a High Speed with ethernet HDMI cable running from the Shield to the TV into HDMI input 3. When I go into the TV's setting and check out the signal diagnosis it says the video format is 3840*2160@60Hz. When I go into the picture setting it has the option to change the HDMI 2.0 format and it's greyed out but it's also on "enhanced."
I feel like this side problem is contributing the main problem of not being able to play 4k content on youtube. It maxes out at 1440p.
It's weird that you are not getting at least 4K@30Hz with the cable you have but I guess to resolve your issue you should connect the shield on HDMI ports 1 or 2.
Ports 1 and 2 are HDMI 2.0 version, ports 3 and 4 are HDMI 1.4 version.
You should be able to get 4K at 2160p/24, 2160p/25 and 2160p/30 with all ports but if you want to get those including 2160p/50 and 2160p/60 then you have to connect the device to port 1 or 2.
Also, make sure the HDMI cable you have is 2.0 version, that way you will get the fullest resolution your TV supports at ports 1 and 2, but if the cable is 1.4 version then you'll get stuck at 2160p/30 on all ports.
if you want to know more information about HDMI versions and what they support, you can visit this link at wikipedia, look at the second table "Refresh Frequency Limits at Various Resolutions" in "version comparison" section: https://en.wikipedia.org/wiki/HDMI#Version_comparison