Originally Posted by noko
Maybe, plus some confusion as well. Info was from AnAndTech:
4:2:0 is a color compressed video signal that does indeed cause degradation. Looks like HDMI 2.0 can support 4:4:4 as an option.
HDMI 2.0a extends color to 10 bit, 12 bit and HDR - anyways read the AnAndTech article maybe that will be clearer then my confusion aspect of what is going to happen. I just can't see new UHD Blu-Ray players not supporting all those HDMI 2.0 UHDTV's that has been sold in the last several years.
It's 4:2:0 on the media source but it's decompressed on the output source to 4:4:4 as long as the output source is HDMI 2.0 compliant and the TV has the appropriate HDMI port for it. It'll look something like this:
HDMI 1 (HDCP, ARC) 4:2:0
HDMI 2 (HDCP) 4:2:0
HDMI 3 (HDCP with 3.5mm audio in) 4:4:4 at 60Hz
HDMI 4 (HDCP 2.2, MHL) 4:2:0
HDMI 2.0a is too new and no content exists for it yet, and even the next generation UHD Blu Rays will still retain 4:2:0 compression. The goal is for 4k 60fps which eats up bandwidth and space, and the first thing to go to save space almost always the extra color detail that most people can't see anways because most TV's haven't caught up to that kind of color accuracy.