HDMI 2.1: HDR Dynamic Metadata

[bruceames]

Originally Posted by Geoff D

Different TVs have different levels of maximum performance, in terms of brightness or colour gamut or whatever, right? What the dynamic metadata allows the HDR TV to do is to actually adjust the brightness, colour etc on a "content dependent" shot-by-shot basis to better suit the performance of the TV and to better convey the original intent of the HDR grade. (This also applies to the SDR transform too)

The current static metadata has nothing like this level of finesse which is why I think we're seeing such radically different opinions of these UHD discs so far, and why people are having to do so much tweakery from movie to movie. All it's doing is adjusting the image in a cruder way, not on a shot-by-shot basis but on a fixed global level.

Make sense?

So Geoff, the dynamic data (which will probably be Dolby Vision) doesn't actually make the picture have a higher dynamic range than HDR10, but simply acts as a live calibrator to give more accurate colors and brightness levels?