Concern over 4k and replacing

[Penton-Man]

Originally Posted by Wendell R. Breland

It is Rec. 709, H.264, 8 bit, 4:2:0. Rec. 2020 (for UHD) requires 10 or 12 bit.

Since you mention Rec.2020, in order to give you an idea of the specifics of the direction for UHD technology with regards to future standards setting…amongst the actual folks (engineers and scientists) that brought you Recommendation ITU-R BT.2020, currently there is ongoing discussion as to UHD profiles because we need to set the complete UHDTV ecosystem chain and standards help make sure we agree on a single common version for UHDTV or Ultra HD; whatever is your phrase of choice.

So, people are considering a first UHD-1 phase which could be 4K (p50/60) including the possibility of 1080p100/120. This profile would be limited to the Rec.709 color space but, would have 10-bit bit-depth
(with 12-bit optional) and some HDR capabilities. Then, a more advanced UHD-1 profile would support 100 and 120 fps 4K resolution as well as the ITU-R BT.2020 color space and HDR capability. On the far distant horizon, the most advanced profile would be
the 8K/120 system, to include all parameters defined in ITU-R BT.2020.

Audio in the profiles would expand from 5.1 support up to fully immersive and object-based methods as they were to become available over time.

*4K = 2160p
*8K = 4320p