This work by nwgat is licensed under a
Creative Commons Attribution-ShareAlike 4.0 International License.

I only ask for a link to http://nwgat.ninja/4k
wherever the content is used

The red files can be exported to tiff/openexr with REDCINE-X PRO

y4m format

Spec

Width : 4 096 pixels x 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 24.000 fps
Scan type : Progressive
Compression mode : Lossless
Bits/(Pixel*Frame) : 8