Doom9's Forum - View Single Post - madVR - high quality video renderer (GPU assisted)

huhn · 3rd November 2018, 18:07

measuring peak brightness is done by every local dimming TV well obviously because that's how you know how to dim the back light.

in theory this gives you HDR10+ (except for better encoding i still don't known what the big deal about this is instead of just sending it as HDR10 and let the TV measure it) and madVR could repack it like that.
but i really have a feeling madVR is using this to do a better job at tone mapping. so no the core reason to use HDR10+ is not given with this.

DV is a different beast on BD it adds extra high lights which are completely missing with out it and it has a higher insane peak nit that can't be put into HDR+.
and it's to me very obvious that it is very useful for HDR -> SDR conversation.

@NoTechi

an SDR 3D lut is used for HDR-SDR conversion and to get the best possible result there a gamma of 2.2 is needed.
because it really looks like madVR is mapping the PQ to 2.2 so to get the same brightness the PQ would have and to get the gamma processing kind of working.

3rd November 2018, 18:07	#53554 \| Link
huhn Registered User Join Date: Oct 2012 Posts: 7,926	measuring peak brightness is done by every local dimming TV well obviously because that's how you know how to dim the back light. in theory this gives you HDR10+ (except for better encoding i still don't known what the big deal about this is instead of just sending it as HDR10 and let the TV measure it) and madVR could repack it like that. but i really have a feeling madVR is using this to do a better job at tone mapping. so no the core reason to use HDR10+ is not given with this. DV is a different beast on BD it adds extra high lights which are completely missing with out it and it has a higher insane peak nit that can't be put into HDR+. and it's to me very obvious that it is very useful for HDR -> SDR conversation. @NoTechi an SDR 3D lut is used for HDR-SDR conversion and to get the best possible result there a gamma of 2.2 is needed. because it really looks like madVR is mapping the PQ to 2.2 so to get the same brightness the PQ would have and to get the gamma processing kind of working.