HDR Discussion Thread

[Geoff D]

Originally Posted by StingingVelvet

Not techy enough to understand all this easily, but it would be far, far from the first time a somewhat inferior format ended up ruling the day because of economics.

But the point is that most studios appear to be grading on Dolby's tech to begin with, so if there's any monetary concern here it's already overcome its first big hurdle.

[Penton-Man]

Originally Posted by gkolb

No HDR highlights or posts today?

New camera from Sony - https://www.sportsvideo.org/2017/10/...studio-camera/
plus, two tidbits about 2 other cameras at end of article.

[zmarty]

Oct 16th, 2017 - Deluxe Helps Answer Growing Demand for 4K Ultra HD Blu-ray™ Content with Dolby Vision Approved Authoring Services

Deluxe Entertainment Services Group (Deluxe) delighted cinephiles today with the announcement that its compression and authoring services are now Dolby Vision approved, which will rapidly facilitate the release of more high-quality 4K UHD Blu-ray content into the market. Deluxe has already delivered more than 100 4K UHD Blu-ray SKUs in high dynamic range (HDR) – more titles than any other industry provider. With this announcement, Deluxe's end-to-end compression and authoring workflow, including its own proprietary toolset for dynamic range and color space conversion, and that of partners Scenarist and Ateme, is now approved by Dolby to support Dolby Vision HDR in addition to HDR10 for the 4K UHD Blu-ray Disc format.

[StingingVelvet]

Originally Posted by Geoff D

But the point is that most studios appear to be grading on Dolby's tech to begin with, so if there's any monetary concern here it's already overcome its first big hurdle.

Oh, my cursory read was that studios were mastering for HDR 10 first and then maybe-shmaybe putting more money into tuning Dolby Vision. You're saying it's the opposite of that?

[Geoff D]

Originally Posted by StingingVelvet

Oh, my cursory read was that studios were mastering for HDR 10 first and then maybe-shmaybe putting more money into tuning Dolby Vision. You're saying it's the opposite of that?

Many HDR discs from certain studios thus far have been mastered with 4000 nit static metadata (and we're told that others are mastering to 4000 but then downconverting to 1000), data that is derived from the display that's being used to master it. You know what studio monitors hit 4000 nits? There's only one AFAIK: the Dolby Pulsar.

In other words: most studios (Warners, Sony, Lionsgate, Universal, possibly Disney and Paramount too) have been mastering their HDR10 wares using Dolby's tech, and it's really no coincidence that most of those outfits have had Dolby Vision available on 4K streaming for a while now, well before the first DV discs started appearing. Disney are also doing the same, releasing HDR10 on disc but DV on streaming. Get the picture? They're grading in DV and downconverting the HDR10 from that, and have been since pretty much the start aside from Fox (though even they do Dolby Vision for certain theatrical releases of theirs).

[edit] And don't think that the above news about Deluxe is somehow contradictory, they announced they were ready for DV mastering back in 2014 (http://www.hollywoodreporter.com/beh...t-dolby-718343) and have indeed handled the authoring of many HDR10 discs. The point is that they're now approved for actually compressing and authoring Dolby Vision onto UHD disc, not an easy process thanks to the base/enhancement layer composition of DV.

[PeterTHX]

Waiting for that big HDR10+ announcement of titles from multiple studios...

[ray0414]

Speaking of that long awaited hdr10+ Content, anyone have a paid subscription for the following website? They've got a new article about Samsung galaxy preparing it for launch.


https://www.displaydaily.com/paid-ne...ring-for-hdr10

[PaulGo]

In Japan they are testing 8K broadcasting.

http://www.lightreading.com/video/4k...d/d-id/737330?

[Joce]

Originally Posted by PaulGo

In Japan they are testing 8K broadcasting.

http://www.lightreading.com/video/4k...d/d-id/737330?

We know that for years now. They plan to launch 8K for the 2020 Olympics.

[Geoff D]

And they did 8K tests at the 2012 Olympics.

[FilmFreakosaurus]

Originally Posted by Geoff D

And they did 8K tests at the 2012 Olympics.

Unless you have the room and money for a giant cinema screen or IMAX theater, 8k is absolutely not necessary for the home.

NHK was demoing 8k broadcasts at NAB, and it was not that impressive. One of the apparent killers was the gobs of compression used making any visual benefits over 4k moot.

The only upside was the immersive audio, which could be had with 4k.

If the industry would only take the time to get 4k right and nail down 12 bit HDR and Rec 2020, along with at least Blu-ray grade lossless Dolby Atmos and include much higher bitrates than they wish to currently allocate, 4k would be perfect for decades to come... if we last that long.

[gkolb]

I would just like to have 4K for the 2018 Winter Olympics.

Pretty Please.

[Staying Salty]

Originally Posted by mozmo

Has nothing to do with the mastering, it's the dolby vision hardware tone mapper which works on the whole scene, it's raising black levels on the whole scene to increase the APL.

Originally Posted by mozmo

Different metadata possibly, what I meant is if the metadata tells the tone mapper to raise black levels, it boosts the whole scene hence elevated bars.

The fix would be of course to not use dynamic metadata aggresively and effectively run it like HDR10. That way the brightness levels won't be raised/lowered all over the place in the attempt to get a better picture, ie go back to more static like metadata.

Which brings us back to what is the point of dolby vision if the dynamic metadata is causing more harm than good.

This makes my head swim. Is there any truth to any of this?

[RockyIII]

Originally Posted by Geoff D

Is that what he actually says in the video? Or are people misunderstanding his explanation of HDR10 being the 'core' of DV on disc for something else? anyone got a time stamp?

What I took home is what he said in his closing statement, and that is that he would largely prefer to watch something in Dolby Vision than in HDR10.
The End.

[RockyIII]

Originally Posted by Staying Salty

This makes my head swim. Is there any truth to any of this?

It's quite simple:
Dolby Vision > HDR10

[DanBa]

Huawei and Dolby Laboratories Announce World’s First Dolby Vision-enabled Set-top Box for IPTV
http://www.avsforum.com/forum/465-hi...l#post55009012

The Huawei Q22 could be a universal HDR STB.
Apparently, its SoC is Hi3796M V200 from HiSilicon, a Huawei company.
The Huawei Q22 set-top box is providing by Altibox, a Norwegian fibre operator.
https://www.altibox.no/privat/kundes...e-til-dekoder/
http://avforum.no/forum/digitalt-bak...ml#post2051196
https://www.tek.no/artikler/test-huawei-q22/399158
https://androidtvbox.eu/hisilicon-hi...on-hdr-10-hlg/





The Hi3796M V200 SoC is compatible with all existing operational HDR formats: HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR ("HEVC and VP9 10bit decoding").

[puddy77]

Originally Posted by DanBa

Huawei and Dolby Laboratories Announce World’s First Dolby Vision-enabled Set-top Box for IPTV

[Show spoiler]
http://www.avsforum.com/forum/465-hi...l#post55009012

The Huawei Q22 could be a universal HDR STB.
Apparently, its SoC is Hi3796M V200 from HiSilicon, a Huawei company.
The Huawei Q22 set-top box is providing by Altibox, a Norwegian fibre operator.
https://www.altibox.no/privat/kundes...e-til-dekoder/
http://avforum.no/forum/digitalt-bak...ml#post2051196
https://www.tek.no/artikler/test-huawei-q22/399158
https://androidtvbox.eu/hisilicon-hi...on-hdr-10-hlg/





The Hi3796M V200 SoC is compatible with all existing operational HDR formats: HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR ("HEVC and VP9 10bit decoding").

Very interesting. From that picture, it looks like it transcodes HLG to HDR10. I'm assuming it's the first device to do so. It also upconverts SDR to HDR10. But it doesn't show that it passes HLG to an HLG compatible TV.

I hope this is the first of many more devices like it.

[puddy77]

Sony's new α7R III mirrorless camera records 4k HLG, S-Log2 and S-Log3.

https://alphauniverse.com/stories/so...ion-and-speed/

[DanBa]

Originally Posted by puddy77

Sony's new α7R III mirrorless camera records 4k HLG, S-Log2 and S-Log3.

https://alphauniverse.com/stories/so...ion-and-speed/

I wonder when a smartphone will record 4K HLG.

[Penton-Man]

Originally Posted by Penton-Man

....For example, just within the past several days, Dolby is challenging (with merit, imo) the presumed value at least as expressed in the wording of a proposal promoting the significance of measured parameters, such as wPSNR, etc. as opposed to that of the value of subjective testing for the evaluation of HDR compression performance, the later being underestimated in Dolby’s opinion.

^ follow-up
at the meeting the working group essentially accepted the proposal by Dolby with some changes in wording