HDR Discussion Thread

[Penton-Man]

Originally Posted by Penton-Man

SoCal Locals:
If all work continues to progress accordingly and there is no unforeseen delay(s), the opening for the Dolby Cinema auditorium at the AMC Orange is on for Nov. 11.

Update: Opening pushed back to the 18th….hopefully in time to make for the DV showing of the new Harry Potter flick for folks down in thee O.C.

[Richard Paul]

Originally Posted by DanBa

The VP9-PQ YouTube HDR is not the CTA / BDA HDR10:
. the codec of royalty-free VP9-PQ is the royalty-free 10-bit VP9
. the codec of HDR10 is the royalty-paid 10-bit HEVC H.265.

A HDR10 compatible display only needs to support HDR10 over uncompressed video. HDR10 was made by the CTA. In the Ultra HD Blu-ray specs they refer to their HDR format as BDMV HDR. It is BDMV HDR that requires the use of HEVC.

[DanBa]

Thank you, Richard!

So, HDR10 is not HDR10.

The controversial legacy HDR10 (i.e. HEVC HDR10) is being used everywhere.



https://source.android.com/devices/t...splay/hdr.html


Common File Format & Media Formats Specification Version 2.1:
http://t.co/iKl3AujyGZ

"B.6. HDR10 Media Profile Definition
B.6.3.1. Constraints on [H265] Elementary Streams
[H265] elementary streams conforming to this Media Profile SHALL comply with the following HEVC Profile, Tier and HEVC Level constraints: Main 10 Profile as defined in [H265]."


I will be more cautious about "HDR10".
Thank you again, Richard!

[Penton-Man]

Originally Posted by DanBa

Common File Format & Media Formats Specification Version 2.1:
http://t.co/iKl3AujyGZ

"B.6. HDR10 Media Profile Definition
B.6.3.1. Constraints on [H265] Elementary Streams
[H265] elementary streams conforming to this Media Profile SHALL comply with the following HEVC Profile, Tier and HEVC Level constraints: Main 10 Profile as defined in [H265]."

Because of another matter I’m saddened to a point of near speechlessness today, but I’ll try to contribute at least a little. For readers’ convenience, a specific page reference from last year….https://forum.blu-ray.com/showthread...e#post11409596

Soldiering on.

[DanBa]

I am not directly concerned, but my feelings go out to you.

[Richard Paul]

Originally Posted by DanBa

So, HDR10 is not HDR10.

Well there is the HDR10 for HDR10 compatible displays that was made by the CTA and than there is the HDR10 for media that was made by DECE. As such it is possible to make a HDR10 compatible display that doesn't have a HEVC decoder such as a computer monitor.

[zmarty]

I have published an HDR video on YouTube that you can view with Chromecast Ultra:

Cannon Beach Oregon 4K UHD Real HDR Chromecast Ultra - YouTube

If you view it on an SDR (non-HDR) screen you will actually look at an HDR > SDR conversion that YouTube creates automatically.

It took a couple of days to set up a workflow for processing and uploading HDR videos for YouTube. Their HDR implementation is atrocious because they rely on custom command line tools to attach HDR metadata to exported video. It's a total mess. And it's their fault because they do not support the actual standard as input (HEVC/H.265 with embedded HDR metadata).

Subscribe to the channel if you want to get notified of new videos as I post them in the next few days.

I will also post this in the Chromecast Ultra thread.

[DanBa]

The 2nd phase of Ultra HD Premium:
https://www.avforums.com/article/uhd...-premium.13090

"So you’ve achieved your goals to date, what’s next for the Ultra HD Alliance?

Well that brings us on to phase two and we’re now setting our sights on to other related Ultra HD areas. There are really two areas that we’re focussing on and the first is broadcast.

The other area that we’re looking at is very generically called battery powered devices but basically gets into the mobile space.

Well it's obviously dependent on the standards being agreed, especially in the case of broadcast, but hopefully we'll see further announcements at CES in January and then later into 2017.


Speaking of image quality, does the UHD Alliance plan to adopt dynamic metadata for HDR10?

The UHD Alliance is agnostic towards the HDR formats and there’s already HDR10 and Dolby Vision included in our specs. Obviously Dolby is also a member of course and their format already has the capability to deliver dynamic metadata. I think as HDR becomes more commonplace we’ll revisit the specs and things like dynamic metadata will be adopted. As I said we’re agnostic and the current specs aren’t fixed, so they’ll be adjusted as technology changes. Some of the existing specs and standards are already fairly new and in the case of broadcast are still being agreed."

[Penton-Man]

Originally Posted by zmarty

I have published an HDR video on YouTube...

And thusly, as a content creator, you are a visually tangible provider in the HDR awareness movement, be it YouTube or whatever deliverable platform. Good job. What’s more, the soothing visuals and music of your clip have somewhat eased my pain today.

[Penton-Man]

Speaking of palmarès by our zmarty or others, the Technicolor profile communications people should add 'Doctor Strange' (2D HDR theatrical version in Dolby Vision) to Mike’s list of achievements....

Originally Posted by Penton-Man

http://www.technicolor.com/en/mike-sowa?location=938

P.S.
The IMAX 3D HDR version of grading Dr. Strange going to Lee….. https://www.linkedin.com/in/lee-wimer-4b635137

[Penton-Man]

Originally Posted by DanBa

Some of the existing specs and standards are already fairly new and in the case of broadcast are still being...."

Revised, refined or adjusted….
https://www.itu.int/md/R15-WP6C-C/en

[DanBa]

It is a pity that these documents are restricted to TIES users!

[Penton-Man]

Originally Posted by DanBa

It is a pity that these documents are restricted to TIES users!

I reveal what I can when a substantial need calls for it, for example -

Originally Posted by Penton-Man

the Dolby proposal was about much more than “specular highlights”, as indicated by Joe…..for Craig and Scott (D.) submitted an extensive ~ 80 page report detailing Dolby’s HDR (or EDR, if you will) proposal to the working party.

That Dolby document was submitted a full year prior to that YouTube “geek” *interview*. It described black level and diffuse white as well as highlights as contributors to the Dolby high dynamic range solution, also detailing bit depths, described the calculation of the Perceptual Curve EOTF for converting digital video code values into absolute linear luminance levels at the point of display, and vice versa. Just too much to type out here. I guess Joe never read it - http://www.itu.int/md/R12-WP6C.AR-C-0052/en

[Penton-Man]

Note to those aspiring HDR YouTube content creators who are considering contributing to the HDR movement:

Don’t be intimidated with the whole YouTube process by getting the impression that you absolutely require a Sony BVM-X300 (as pictured on the last page) in order to produce your work.

Yes, that is a fine tool if you have the access or the financial means to purchase such an expensive monitor, but there are reasonable alternative choices for getting some decent HDR material out to the public. For instance I’m informed that Sony has added a hard clip mode (at 1000 nits thus acting like the BVM-X300) to the Z9D (consumer TV), which is an excellent feature for content creators to take advantage of.

[Penton-Man]

Originally Posted by Penton-Man

Sony has added a hard clip mode...to the Z9D (consumer TV)

To be clear, as a supplemental user feature….to the traditional tone mapping mode that suits consumer viewing HDR content.

[Geoff D]

Every review (decent review, not 'what hifi' soundbite bullshit) I've read said that the Z9D clips HDR anyway. Huh.

[Penton-Man]

Originally Posted by Geoff D

Every review (decent review, not 'what hifi' soundbite bullshit) I've read said that the Z9D clips HDR anyway. Huh.

Not intending to be dismissive of the consumer TV reviewers, but other than the title and perhaps the first couple or last few sentences of such articles, I really haven’t read any of the online reviews fully.

The foundation of my declaration as to the recent versatility of the Z9D (the hard clip and tone mapping mode) comes from investigation by the author of these pictures …..https://forum.blu-ray.com/showpost.p...&postcount=181, namely Stacey.

[Penton-Man]

Originally Posted by Penton-Man

Not intending to be dismissive of the consumer TV reviewers, but other than the title and perhaps the first couple or last few sentences of such articles, I really haven’t read any of the online reviews fully.

The foundation of my declaration as to the recent versatility of the Z9D (the hard clip and tone mapping mode) comes from investigation by the author of these pictures …..https://forum.blu-ray.com/showpost.p...&postcount=181, namely Stacey.

P.S.
One thing obvious is that I can't properly spell the word 'intimidated' a couple posts above. Will correct now.

[Geoff D]

Got a link to Stacey's findings re: the separate tone mapping and clipping modes? Not that I disbelieve you, but you know I love this techny nonsense. Also, one thing that put me off of the Z9D as a possible candidate for a new TV was the repeated insistence from otherwise reputable places like HDTVTest and AVF that the TV hard clipped HDR, so if it's also got a properly nuanced tone mapping mode then I'd genuinely like to read up on it.

[Penton-Man]

Originally Posted by Geoff D

Got a link to Stacey's findings re: the separate tone mapping and clipping modes?...

I do not. I received the info word-of-mouth several weeks ago, but I will ask if there is anything else available or confirmatory on the Z9D mode topic. I’ll get back to you later on as today and this weekend are rather busy and important for my sister and I to honor our parents who are buried in Arlington National Cemetery....




as a consequence of both having served (proudly) for the United States during wartime.