HDR10, Active HDR, Dolby Vision and other HDR schemes

[FilmFreakosaurus]

And yet, besides dynamic HDR, Dolby Vision has 12 bit depth and higher chroma sampling than HDR10 (and maybe HDR10+), which seems to be one of the more forward thinking approaches so far as long as the studios follow the correct encoding and mastering standards.

Why the BDA didn't just mandate 12 bit, 4:2:2 and higher as a base standard to begin with... Though, Universal would probably still find a way to screw even that up.

[Geoff D]

Originally Posted by FilmFreakosaurus

And yet, besides dynamic HDR, Dolby Vision has 12 bit depth and higher chroma sampling than HDR10 (and maybe HDR10+), which seems to be one of the more forward thinking approaches so far as long as the studios follow the correct encoding and mastering standards.

Why the BDA didn't just mandate 12 bit, 4:2:2 and higher as a base standard to begin with... Though, Universal would probably still find a way to screw even that up.

If we got a new disc storage format then perhaps they would've started with 12-bit as a base, but with a mere extension to the BD spec for that 100GB maximum then it was always likely to be at the lower end. Perhaps if Dolby's special quart-in-a-pint-pot processing was actually embraced as the standard from the start (it's only optional on UHD Blu, after all) then we could've had all that, but it wasn't so we didn't. Personally I'm still staggered by how good HDR10 can look so DV will be the cherry on top.

Originally Posted by Robert Zohn

Sorry for saying "2017" X1 Extreme processor TVs. My bad.

All of Sony's active HDR benefits are built-into Sony's 2016 mid year flagship TV.

Yes, I remember matey from Sony talking about this active presentation in that AVS interview, it maps when it needs to map but is intelligent enough to recognise when it doesn't need to, correct?

[Zhorik]

Originally Posted by FilmFreakosaurus

And yet, besides dynamic HDR, Dolby Vision has 12 bit depth and higher chroma sampling than HDR10 (and maybe HDR10+), which seems to be one of the more forward thinking approaches so far as long as the studios follow the correct encoding and mastering standards.

Why the BDA didn't just mandate 12 bit, 4:2:2 and higher as a base standard to begin with... Though, Universal would probably still find a way to screw even that up.

Wasn't it mentioned in the HDR thread that HDR-10 can do 4:2:2?

[Geoff D]

Originally Posted by Zhorik

Wasn't it mentioned in the HDR thread that HDR-10 can do 4:2:2?

Of course it can, it can also do 4:4:4, but the salient point is that this is not featured in the UHD Blu-ray specification itself which is the limiting factor here, not HDR10 as a format. And while Dolby are reverse engineering a 4:2:2 output from a 4:2:0 2160p base layer combined with a 4:2:2 1080p enhancement layer, that's decidedly not the same thing as encoding a 2160p 4:2:2 signal directly to disc.

[Robert Zohn]

Originally Posted by FilmFreakosaurus

And yet, besides dynamic HDR, Dolby Vision has 12 bit depth and higher chroma sampling than HDR10 (and maybe HDR10+), which seems to be one of the more forward thinking approaches so far as long as the studios follow the correct encoding and mastering standards.

Why the BDA didn't just mandate 12 bit, 4:2:2 and higher as a base standard to begin with... Though, Universal would probably still find a way to screw even that up.

All true, but no TV panel is 12bit so DV's 12bit and better color sampling is thrown out. With that said, I would think it might have some value to have higher chroma sampling and bit depth before the signal gets to the panel.