HDR Discussion Thread

[Penton-Man]

Originally Posted by DanBa

=> Active HDR with Dolby Vision....

I would like consumers to see an HDR content shootout between Active HDR with Dolby Vision and, for the lack of an official name, Active HDR with Samsung Vision….

Originally Posted by Penton-Man

https://www.youtube.com/watch?v=qicgLruwMTY#t=41m51s

[Penton-Man]

Originally Posted by zmarty

There is quite a debate going on in the Arrival 4K thread about darkness, brightness, and artistic intent of the HDR disk, so I decided to create another review video:

Real 4K HDR: Arrival 4K Blu-Ray HDR Review (Chromecast Ultra) - YouTube

zmarty, to comment on one of your questions posed at the end of your published YouTube clip -

If some consumers are unhappy by being restricted to watching a movie as it was meant to be in terms of luminance and don’t consider a faithful reproduction of the Director’s original creative intent to be of paramount importance, then looking forward to advances in color coverage, I think they will have no problem with accepting observer metamerism....

Originally Posted by Penton-Man

the susceptibility to observer metamerism…from a scientific viewpoint, e.g. https://cias.rit.edu/media/uploads/f...metamerism.pdf

And a few more for reference:

Y. Asano, M.D. Fairchild and L. Blondé, Observer variability experiment using a four-primary display, AIC Colour 2013, Newcastle, 136-137 (2013).
Y. Asano and M.D. Fairchild, Observer variability experiment using a four-primary display, IS&T 21st Color & Imaging Conference, Albuquerque, 171-176 (2013).
D.L. Long and M.D. Fairchild, Reducing observer metamerism in wide-gamut multiprimary displays, SPIE/IS&T Electronic Imaging Conference, San Francisco, Volume 9394, 93940T (2015).
D.L. Long and M.D. Fairchild, Observer metamerism models and multiprimary display systems, SMPTE Annual Technical Conference, Hollywood, (2015).
M.D. Fairchild and R.L. Heckaman, Measuring observer metamerism: The Nimeroff approach, Color Research and Application 41, 115-124 (2016).
D.L. Long and M.D. Fairchild, Observer metamerism models and multiprimary display systems, SMPTE Motion Imaging Journal 125, 18-29 (2016).
M.J. Murdoch and M.D. Fairchild, Effects of inter-observer variation on color rendering metrics, IS&T 24th Color & Imaging Conference, San Diego, in press (2016).
Zhou, B. Grotton, K. Kruse, A. Skinner, A. DoVale, S. Farnand and M.D. Fairchild, Observer calibrator for color vision research, IS&T Electronic Imaging 2017 Conference, San Francisco, in press (2017).

when consumer TV manufacturers progress closer and closer to fully achieving the BT.2020 colorspace as they compete with each other for those BT.2020 coverage % bragging rights and thusly, consumers’ spending money.

[Penton-Man]

The AIS also recognized two films for Best use of high dynamic range: Warner’s Live by Night (live action feature) and Pixar’s Finding Dory (animated feature) .

[DanBa]

Originally Posted by Penton-Man

I would like consumers to see an HDR content shootout between Active HDR with Dolby Vision and, for the lack of an official name, Active HDR with Samsung Vision….

With 2017 LG OLED TV and Dolby Vision-compliant UHD Blu-ray player, hopefully we will see an HDR content shootout between HDR10 and "Active HDR with Dolby Vision" and Dolby Vision.

Originally Posted by Penton-Man

^ Dan, vis-à-vis thru the CMU, Dolby provides an automatic conversion for that and if the colorist isn’t completely satisfied with the look, he/see can always trim it, manually with the color correction controls.

"Active HDR with Dolby Vision" = Automatic data-driven conversion (at the TV playback time)

Dolby Vision = Automatic data-driven conversion (at the mastering time) + Manual color correction

Color volume mapping with color correction metadata should better preserve the artistic creative intent.
https://forum.blu-ray.com/showpost.p...postcount=1171

[batman2000]

i have a medium size bedroom and i like to know what size hdr dolby vision tv i should get?

[LordoftheRings]

Originally Posted by Penton-Man

From ^ “Unfortunately, the film’s complex, unprecedentedly high frame rate created a problem for theaters, and projecting the film in its full resolution required installing costly new equipment. As such, only six theaters in the world were equipped to show it at 120 fps, with just two in the United States, the AMC Lincoln Square in New York, and The ArcLight Hollywood in Los Angeles.”

For the record, the plan as exclusively revealed on Blu-ray.com (last May), long before the mass media got the news.

Leon The Professional - OK SCENE - YouTube

[LordoftheRings]

Originally Posted by batman2000

i have a medium size bedroom and i like to know what size hdr dolby vision tv i should get?

How big is your wall?

[FilmFreakosaurus]

Originally Posted by batman2000

i have a medium size bedroom and i like to know what size hdr dolby vision tv i should get?

How far away will you sit? It's the same set of calculations as a living room scenario.

[Zhorik]

With HLG, HDR-10 and Dolby Vision, with say a 500 nit TV,

is the 1000 nits (for HDR-10) and 4000 nits (for DV) compressed in the 500 nits or

is it 0-100 nits SDR + 101-500 nits highlights compressed? or

is it 0-100 nits SDR + 101-500 nits highlights with clipping at 500 for above that?

[Geoff D]

HLG is a relative brightness system, not absolute like HDR10, so concerns about clipping/mapping are moot because the image is designed to be rebuilt by the TV itself.

As for HDR10 it all depends on the implementation, but AFAIK none of the <1000-nit displays operate with a 100-nit SDR-style baseline and then HDR sauce on top (which wouldn't actually be a bad idea given that some UHD movies can end up looking extremely dark on underpowered displays). Some manufacturers prefer to clip content past a certain point, others prefer to map the whole range, but you'd have to go to somewhere like AVS and pick their brains for specifics.

DV is designed to map the image to the TV's capabilities as best it can using content-derived metadata to do so, but in terms of specifics I have none to give you.

[Penton-Man]

Originally Posted by DanBa

Color volume mapping with color correction metadata should better preserve the artistic creative intent.
https://forum.blu-ray.com/showpost.p...postcount=1171

Along with Prin et al., Charles also has been known to post free advice in Illuminata Delecta.

[Penton-Man]

@ LordoftheRings, in retrospect, to be geographically and politically precise, in my original post on the subject from last May ( For the record, the plan as exclusively revealed on Blu-ray.com (last May), long before the mass media got the news.) I should have said 4 venues (rather than 3) having insensitively lumped together mainland China and Taiwan as one in my flight of ideas.

With regards to Luc B., little known fact....

Originally Posted by Penton-Man

On a sensitive note, Luc is a founding member of the Brain & Spine Institute based at the Pitié-Salpêtrière Hospital in Paris.

[Penton-Man]

Originally Posted by Geoff D

DV is designed to map the image to the TV's capabilities as best it can using content-derived metadata to do so, but in terms of specifics I have none to give you.

Basically, the metadata is saved into the mastered media and it’s used to more “intelligently” (that’s according to Dolby, personally I have a problem with personification) scale the HDR highlights to fit within any given HDR display’s peak highlights, also to handle how to down convert the image for SDR displays, and also, something not mentioned much, to determine how to respond when a TV’s automatic brightness circuit switches in.

Some aspects In more detail…..
http://www.freshpatents.com/-dt20160...0160248939.php

[LordoftheRings]

Originally Posted by Penton-Man

@ LordoftheRings, in retrospect, to be geographically and politically precise, in my original post on the subject from last May ( For the record, the plan as exclusively revealed on Blu-ray.com (last May), long before the mass media got the news.) I should have said 4 venues (rather than 3) having insensitively lumped together mainland China and Taiwan as one in my flight of ideas.

With regards to Luc B., little known fact....

Originally Posted by Penton-Man
"On a sensitive note, Luc is a founding member of the Brain & Spine Institute based at the Pitié-Salpêtrière Hospital in Paris."

That, I didn't know. I'm very very happy to participate in this thread and learn. Luc Besson is one of my . . . favorite French film directors.
'Lucy' by the way; it is a very underrated film. A film for the brain, truly...highly intelligent imagination. There is no doubt in my mind.
______

On another previous mentioned note:



I've watched the 3D version last night. Technically; pretty powerful.
Film merit: 88 (out of 100) ... Underrated, very.
The film has soul written all over it...deep soul that reaches the stars above the sky.

[Penton-Man]

Originally Posted by LordoftheRings

That, I didn't know. I'm very very happy to participate in this thread and learn....

And your, as well as everyone’s sincere participation is welcomed.

Originally Posted by LordoftheRings

'Lucy' by the way; it is a very underrated film....

My general view regarding many film critics - from start here, proceed following the arrows to the far left, then straight down to the first orange box ->

[Penton-Man]

Originally Posted by LordoftheRings

I've watched the 3D version last night. Technically; pretty powerful.

Indeed….”Shooting Ang Lee’s experimental 'Billy Lynn’s Long Halftime Walk' was an epic feat. Grading and mastering the film was no less daunting”….. http://www.creativeplanetnetwork.com...-frames/617345 .
FilmLight will be represented at the Innovation zone….
https://forum.blu-ray.com/showthread...s#post13236458

Originally Posted by LordoftheRings

Film merit: 88 (out of 100) ... Underrated, very.

See the placement of in the industry of previous post.

[LordoftheRings]

I like your "tour map". I took the first passageway into the Labyrinthian and found my way through a black hole no problem and back to the other side under the dark abyss.

'Lucy' (my own score) = 87 (film impact/value/merit/psychological effect/subconscious...all that wild jazz...through the super intelligent/psychokinetic tunnel of time/scape)
* Only if you absorb the same stuff that she did. It's a cinematic's perspective, Luc Besson. His own visual imagination...what films are made of.
The rest is simply my interpretation.

[Penton-Man]

Originally Posted by Penton-Man

...FilmLight will be represented at the Innovation zone….
https://forum.blu-ray.com/showthread...s#post13236458

Not to play favorites, but whichever color grading system a particular facility might utilize (in this particular example, Digital Vision Nucoda) the main point is, more and more facilities are providing “support for HDR content” …… http://www.hollywoodprofessionalasso....com/?p=153967

For those unfamiliar with MTI Film’s previous work, resto projects have included ‘Lawrence’, ‘River Kwai’, Taxi Driver, etc. http://www.mtifilm.com/restoration/, which we've linked to in years past.

Quite a meticulous outfit they are.

[Penton-Man]

Eh, I see MTI gave a plug to the LG OLED at the very end of that ^ article. For brand/model balance, I’ll think of a way to highlight the Sony Z9D.

[Penton-Man]

So, if you’re not creating HDR content and simply watching it as an enthusiast, best to select the ‘Cinema’ Pro or Home modes as opposed to the Custom mode, if the appropriate selection designation for your particular use wasn’t clear to all readers for when we originally discussed this topic last November….

https://forum.blu-ray.com/showthread...r#post13217103