Is this really 12-bit video ? How can you tell if you’re really producing 12-bit video? Aside from a handful of DCI projectors, few displays can actually render in 12-bit color. Even if you found a proper 12-bit display, it would be challenging to visually tell the difference between 10 and 12 bit video.
These are 10 second 29.97fps 3840×2160 (UHD/4K) film grain loops