Apple 4K and HDCP issue

Punchline for me was I changed the HDMI format output [in AppleTV(ATV) settings>Video/Audio] from YCrCb to RGB High.

Apple recommended to go to settings>video/audio>Check HDMI Connection, but my ATV doesn’t have that as an option.

Other things that worked for the HDCP error between my directly connected ATV and non-4k Vizio, was to change the video format to 720p. But, 1080pSDR eventually worked with Hulu after changing to RGB.

I knew it was an ATV problem because:

-I tried 4 different HDMI cables (high speed, non high speed, hdmi with Ethernet, older

-I tried different hdmi ports on the Vizio

-Updated ATV

-Reset ATV

-Uninstalled/Reinstalled Hulu App

:No change in being able to watch a primetime series without getting the HDCP error.

In the end, I plugged a different ATV (same model) into that tv with same cables and it worked fine with no error.

So, sometimes it’s not the cable, or updating, or anything else except messing around with the AppleTV output settings to interface with your specific television.

Just write down or snap a photo of what your current ATV video output settings are, and then start changing stuff.

If it completely makes the picture messed up, just wait 30 seconds and the ATV will automatically revert back to its original setting as a failsafe.

if it was me then I would do the last troubleshooting step and test it with another tv