HDR Discussion Thread

[James_Younger_Gang]

Originally Posted by jibucha

personal preference :: i suggest giving it a try and make your own decision (it's a subjective decision - entirely)

HDR Effect :: it's function is to artificially add HDR to non-HDR content (Apple TV 4K/DVD/HD/television programming, etc)

"upscaling" :: this would apply to improvement in resolution (different setting)

HDR :: if you want to know how to enable this (LG OLED)

But the upscaling is automatic, right?

[jibucha]

yes (as i understand it)

however, perhaps (LG OLED), the following (settings - general - HDMI UltraHD Deep Color) selection needs to be 'on' for UHD performance, including 'upscaling' (however, i do not know this for certain) :: there might be other settings that might be 'part of this' (UHD) performance, although my display, seems to accomplish scaling with just this one setting

my apology that i cannot be more helpful

Originally Posted by James_Younger_Gang

But the upscaling is automatic, right?

[Geoff D]

Originally Posted by James_Younger_Gang

But the upscaling is automatic, right?

If you're feeding the TV 1080p content and it's not being displayed in 1/4th of the screen (becuz 1080p is literally a quarter of the resolution) then the image is being upscaled. This isn't anything that needs activating on any 4K TV I've ever seen. Yes, the UHD players have upscaling modes that can be turned on or off, so "why do they do it on players if the TV does it automatically then?". Well, '4K upscaling with super chroma blah blah' looks great on a player's spec sheet and sometimes the player's upscaling can do a better job than the TV. But you won't know that unless you try out both for yourself.

[Penton-Man]

Originally Posted by gkolb

DoVi ?

The Look (http://www.thelooklondon.com/ )
has been given accreditation by Dolby and Netflix to deliver New Pictures' The Innocents

THE INNOCENTS Official Trailer (2018) Netflix Teen Series HD - YouTube

(and others) in Dolby Vision to the broadcaster. It follows their investment in the Dolby 4K CMU (which we discussed and pictured on this thread months ago) and it's implementation with their 4K grading and delivery systems. The facility has also installed a 100gb network and dark fiber to Dolby in Soho Square, allowing grading control of their Pulsar 4000nit monitor and to utilize Dolby's 4K HDR laser projector for high-end features and series sign off.

[Penton-Man]

Originally Posted by puddy77

Canon introduced their new full frame sensor cinema camera, the EOS C700 FF. The size puts it in the same class as the Alexa LF, Sony Venice, and Red VistaVision. It's a 5.9k 17:9 sensor with 15 stops of dynamic range.

They also announced a couple of new HDR professional reference monitors. The DP-V2421 qualifies as a 1000 nit mastering monitor.

Good to see more 4K HDR reference monitor choices becoming available. With regards to Canon, one of the test labs affiliated with a working group in ASC’s Motion Imaging Technology Council ( http://ieeexplore.ieee.org:80/docume...4/?reload=true ) has been using a Canon DP-V2420 since last year for HDR content evaluation.

Among other content, said working group has acquired from Netflix the original ACES SMPTE 2065 graded master of Meridian
as well as three SMPTE 2084 PQ encoded and compressed HDR versions that Netflix previously released publicly for test purposes (encoded and compressed at varying luminances and bit rates).

P.S.
Just a couple weeks ago at a Motion Imaging Technology Council committee meeting there was a rather rousing discussion of HDR10 and Dolby Vision.

[Penton-Man]

Originally Posted by puddy77

AV1 is released: https://www.anandtech.com/show/12601...-10-codec-spec

For those with access, scroll down to ‘Comparison of…..’ and check out Matthias’s presentation….https://tech.ebu.ch/pts2018

[Snikt]

Question:

Should the picture quality be worse when playing blu-rays upscaled to 4K and HDR? Because my 1080P blu-rays actually lose detail when playing them upscaled to 4K. I have a Samsung UN55JU7100 tv and the Sony X800.

When using my old Sony player, the picture is better playing them at 1080p than playing them in my 4K blu-ray player.

[Penton-Man]

Originally Posted by Penton-Man

Dolby in Soho Square

Mr. Shaw, I disagree with your recent comment/criticism -



in the conversation on an outside website concerning grading with a Pulsar at Dolby Soho Square.

On the contrary, one of the challenges in designing an efficient HDR color encoding is that in contrast to color appearance model expectations, neither surround luminance nor observer adaptation are known for HDR entertainment imaging scenarios. As a result, a static color difference formula designed for standard dynamic range like dE2000 cannot be used to accurately predict JNDs. Instead, the quantization in any part of an HDR color space should always be determined by the adaptation parameters that result in the smallest detection step in that area to make sure visible quantization artifacts can be avoided for any content on any display in any viewing environment.

The perceptual quantizer (PQ) curve follows exactly this approach for luminance encoding. The PQ curve was derived as a constant minimum detectability curve from the Barten contrast sensitivity function (CSF) model and is further predictable from a local cone model. It always quantizes below the minimum contrast beyond the detection threshold for any adaptation state at any luminance.

[Penton-Man]

Originally Posted by jibucha

bored....?

A solution?
http://abc7news.com/entertainment/ne...ovies/3283927/

[Penton-Man]

Enough for now for me. Wishing everyone a happy Holiday weekend no matter what your persuasion. We’ll have a house full of relatives this evening starting with runs to LAX and John Wayne to pick up some of them, so I’ll be busy for the next few days.

[Snikt]

Originally Posted by Snikt

Question:

Should the picture quality be worse when playing blu-rays upscaled to 4K and HDR? Because my 1080P blu-rays actually lose detail when playing them upscaled to 4K. I have a Samsung UN55JU7100 tv and the Sony X800.

When using my old Sony player, the picture is better playing them at 1080p than playing them in my 4K blu-ray player.

Any thoughts?

[gkolb]

Originally Posted by Penton-Man

The Look (http://www.thelooklondon.com/ )
has been given accreditation by Dolby and Netflix to deliver New Pictures' The Innocents

THE INNOCENTS Official Trailer (2018) Netflix Teen Series HD - YouTube

Those are some vivid blue eyes on the girl, and the lipstick is quite a vibrant vermillion(?) too. A touch of HDR at play?

:EDIT: HDR, strike that! prob WCG at play, or a touch of both. :ENDEDIT:

[gkolb]

Originally Posted by Snikt

Any thoughts?

I know GeoffD had an X800 at one time, and he has commented in the past about settings that need to be turned off on that player so it doesn't degrade any of the PQ or AQ that it sends out.

I think you will find the info in the X800 thread if you crawl back thru his posts.

[Geoff D]

I think Snikt already said he's got his player set to direct which should bypass the DNR on the X800.

[Snikt]

Originally Posted by Geoff D

I think Snikt already said he's got his player set to direct which should bypass the DNR on the X800.

Yes. Exactly. However I noticed there doesn’t seem to be a difference between the “auto” & the “direct” setting. I’ve ordered a Philips 4K player to see if the picture performs any better.

[Geoff D]

Trust me, there's a difference. Auto basically kills grain, it quietens down the picture noise considerably, but if you can't see a difference between them then, as I've just opined in a PM, there might be some sort of setting on your TV that's doing something funky when it's receiving a 4K signal. What that setting is, I wouldn't know. Geoffy don't do Samsung TVs.

[eddievanhalen]

With my Samsung 4K HDR 49" set and the Sony X-800 the best way to watch HD BDs is to leave upscalling off, I have set output to Original Resolution, color space to Auto or 4:2:2 and Video Settings to Direct. As Geoff D. said, Auto applies some kind of noise reduction that degrains the picture, and the same happens with 4K upscaling,which I personally find dreadful and useless as it leaves picture fuzzy and lacking definition.

[Geoff D]

With video settings on Direct then I noted no anomalies at the player level between the 1080p output of the Sony X800 and its 4K upscaled output, this is going into a Sony 4K TV. I've repeated the same test patterns in both resolutions.

That both you and Snikt have Samsung TVs and aren't liking the "softer" image of the Sony's own 4K upscaling is more to do with what the Samsung's upscaling is doing. IMO the Korean marques tend to overemphasise sharpness in their scaling and while this provides a superficial 'pop' to the image I prefer the unmolested naturalism of Sony's upscaling.

[DanBa]

According to Samsung representatives at the Visual Display Tech Summit in Milan this week, Samsung and Dolby discuss about the support of Dolby Vision.
Nothing has been done so far.
http://www.avcesar.com/actu/id-24279...a-discute.html
https://twitter.com/michelleperkins/...25355824603137

[JohnAV]

Originally Posted by DanBa

According to Samsung representatives at the Visual Display Tech Summit in Milan this week, Samsung and Dolby discuss about the support of Dolby Vision.
Nothing has been done so far.

Speaking of the above, I was looking at the Samsung Cinema wondering how the lack of Dolby Vision would impact commercial theater marketing of their Cinematic LED Screen:

First Samsung Cinema LED screen opens in China - FilmJournal International

Although the agreement-signing ceremony with Samsung Electronics already took place in Bangkok in November and opening the screen was originally planned for February, Major Cineplex had to push back the date due to a delivery delay of the sound system needed. “We had to change [our] current sound system from Dolby Atmos to Harman, as this is [currently] the only sound system compatible with the Samsung LED screen,” Narute Jiensnong, Major Cineplex’s director of international business, told FJI.”The delay is due in part that we have tried to work out with Dolby to be part of Samsung LED Screen. Those negotiations eventually turned out futile, so we had to order from Harman and the shipment from the U.S. arrived quite late. We are now looking at a tentative opening date of early to mid-March,” he said.

I see a tough sell for Samsung if competing theaters can play Dolby Vision and/or Dolby Atmos and their Cinematic LED setups can't.