The Future of Ultra-HD: A Recent SMPTE Meeting Update | Ultra High Definition Television (UHDTV) |

Two standards are actually being developed. Simply called UHDTV1 and UHDTV2, the easiest way to distinguish them is by their frame dimensions.

UHDTV1 would have a 4k resolution of 3,840 x 2,160 pixels whereas UHDTV2 would have a whopping 8k resolution of 7,680 x 4,320 pixels.

The standards would contain 10 and 12 bit depth, with chroma subsampling options at 4:4:4, 4:2:2 and 4:2:0. 8 bit, as well as interlacing and fractional framerates, would be discarded.

The likely base framerate would be 120 frames per second, due in part that 120 is divisible by many popular framerates such as 24, 30, and 60.

At such a high framerate, the “flicker fusion threshold,” a technical term for image flicker, would be greatly reduced.