Universal HDR-compliant displays - Page 12 - AVS Forum | Home Theater Discussions And Reviews
View Poll Results: HDR TV shall support all HDR formats.
HDR TV shall support all HDR formats. 116 95.87%
Other (Please detail in a post) 5 4.13%
Voters: 121. You may not vote on this poll

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post #331 of 581 Old 07-24-2018, 02:26 PM - Thread Starter
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It’s the blossoming of the Tree of 40 Fruit.
https://yourpositiveoasis.com/amazing-tree-40-fruit/

Universal audio/video receiver (Dolby Atmos, DTS:X, etc.) is achieved.
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post #332 of 581 Old 07-24-2018, 02:33 PM - Thread Starter
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Quote:
Originally Posted by puddy77 View Post
Hey Dan,
According to a Vizio rep on here, the 2018 Vizio P Series now internally decodes VP9/2 for HDR playback from YouTube.
Thanks puddy77!

Latest Multi-HDR TV table:

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post #333 of 581 Old 08-01-2018, 01:29 PM - Thread Starter
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Sony A9F / Z9F factory calibration

Quote:
Originally Posted by ray0414 View Post
The uniformity Calibration is truly awesome news. However, it is a complete joke that companies now offer this as a "feature". This should have been standard for years.

"uniformity max elite". This sounds like something Samsung would pull. It's sad seeing so many people have to box up flagship tvs and play the return game due to banding and DSE. And it can't be good for profit/sales for these companies.


Some guy pushes you in the river, then he throws you a life jacket and wants you to thank him for saving your life.

But hey if they market and demo this correctly, people will buy it without realizing the above.
https://www.avsforum.com/forum/40-ol...l#post56576238
http://forum.blu-ray.com/showthread....1#post15355301





Thanks!
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post #334 of 581 Old 08-06-2018, 01:51 AM - Thread Starter
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Mura correction

Apparently the factory calibration of the new Sony A9F & Z9F is a result of research efforts focused on display Mura correction:
https://www.google.fr/search?q=mura+...hrome&ie=UTF-8
https://www.google.fr/search?q=mura+...hrome&ie=UTF-8

"Despite the significant investment, the display industry still primarily relies on the use of human operators to perform the final test and inspection of displays. The operator performs visual inspections of each display for defects, and accepts or rejects the display based upon the operator's perceptions. Such inspection includes, for example, pixel-based defects and area-based defects. The quality of the resulting inspection is dependent on the individual operator which are subjective and prone to error."
https://patents.google.com/patent/US8049695
"The use of automatic Mura correction device can help the stable production by evolving its quality and improving yield."
http://olednet.com/en/cybernet-devel...-oled-display/


An OLED Mura correction:
http://olednet.com/en/cybernet-devel...-oled-display/






"OLED panel companies can easily apply the advanced function of Mura correction, and additionally, the use of automatic Mura correction device together which is FPiS™ series provided by Cybernet, can help the stable production by evolving its quality and improving yield. We thus are expecting that this will accelerate the product release in the market.”
The driver IC for OLED display including the newly developed function of Mura correction is scheduled for starting to distribute it from June, 2017 to the market."


A LCD Mura correction:
http://www.teksel.si/sites/2/files/f...%20PN-V551.pdf
https://patents.google.com/patent/US8049695



"A 3D ‘pixel to pixel’ Mura correction is performed at factory on production line using Sharp’s ‘UCCT’ software (Uniform Color Calibration Technology). Using the very accurate L*ab methodology, all chromatic, luminance and hue values are calculated to remove any Mura impurity from the entire display screen area achieving a consistent uniformity of the white point and of all colors across each display from screen edge to center, and between all displays across the entire video wall
This advanced Mura correction process is eventually saved onto a unique combination of separate Look Up Tables (LUT) on board every PN-V551 display, (i.e. known as “hardware calibration”), permanently saving and applying all correction data to obtain a consistent and uniform color rendering across each display from screen edge to center, and between all displays across the entire video wall, regardless to any input signal the display is fed from."
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post #335 of 581 Old 08-23-2018, 11:52 AM
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Someone found that Vizio has HDR10+ in the specs of the PQ on the support website even though it hasn't been announced yet.
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post #336 of 581 Old 08-25-2018, 12:47 AM - Thread Starter
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Thanks puddy77!





The HDR10+ info is currently removed on the Vizio website.
https://support.vizio.com/s/article/...language=en_US

If this information is not an error, then the Vizio PQ will be the 1st universal HDR TV compatible with all currently operational HDR formats (namely HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG YouTube HDR, VP9-PQ [aka VP9-HDR10] YouTube HDR and HDR10+).


Evidence in favor of this info:

. Vizio TVs are powered by Sigma Designs (now V-Silicon) SoC.
https://www.sigmadesigns.com/news/si...mawider-hdtvs/

. Sigma Designs’ universal HDR chipsets STV7803 and STV7804 are compatible with HDR10+.
https://www.sigmadesigns.com/news/si...-hdr-chipsets/

. Post of Matt McRae (then Vizio CTO) in April 2017:
"VIZIO is not announcing any future support for HLG or HDR10+. Why?
First, we like to get a lot farther down the path of analysis and content souring before making such an announcement. We want to make sure we can deliver and that it is actually a step up for our consumers.
Second, HLG is mostly used in Europe where we don't sell displays but we are working closely with some content sources here in US that may launch in the future to understand what future demand would look like...
Third, for HDR10+ the standard is not yet finalized so it is a bit premature. Remember, HDR10+ is just a marketing name for the Dynamic HDR10 functionality. But there are several different versions being proposed into the spec (most make sense, one is a bit of a outlier). We want that to settle down before we market something that doesn't exist in the market or reality.
Interesting part is HDR10+ does NOT require HDMI 2.1 [chipset (?)] and our hardware is capable of dynamic meta data mapping because we supported Dolby Vision from day 1."
https://www.avsforum.com/forum/166-l...l#post52506289
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post #337 of 581 Old 08-29-2018, 01:16 AM - Thread Starter
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New 8th Gen Intel Core Processors & Dolby Vision

"Devices with the new Intel U-series processor can also support Dolby Vision HDR and Dolby Atmos immersive audio. Together, the fusion of Dolby Vision and Dolby Atmos transform PCs into entertainment powerhouses."
https://newsroom.intel.com/news/new-...-life-laptops/

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post #338 of 581 Old 08-31-2018, 12:00 AM - Thread Starter
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Xbox One S/X & Dolby Vision

"Quickly following our news-packed Gamescom Inside Xbox show, we have even more news for our Xbox Insiders as Dolby Vision™ HDR releases today on Xbox! Starting with the Alpha Skip Ahead and Alpha rings, Xbox Insiders with a compatible TV can enjoy Dolby Vision streaming content on Netflix on Xbox One S and Xbox One X."
https://news.xbox.com/en-us/2018/08/...system-update/

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post #339 of 581 Old 09-13-2018, 12:13 PM - Thread Starter
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Oppo universal players

Oppo people is exploring the feasibility of bringing HDR10+ to their UHD Blu-ray players compatible with Dolby Vision.



Thanks Ray!
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post #340 of 581 Old 09-17-2018, 03:31 AM - Thread Starter
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HDR ecosystem

HDR ecosystem - September 2018
https://twitter.com/UltraHDForum/sta...34114309378049

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post #341 of 581 Old 09-17-2018, 04:43 PM
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So HDR10 is both ST2084 AND ST2086?

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post #342 of 581 Old 09-18-2018, 02:16 AM - Thread Starter
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Yes

"HDR10 Media Profile is defined as:
. EOTF: SMPTE ST 2084
. Color Sub-sampling: 4:2:0 (for compressed video sources)
. Bit Depth: 10 bit
. Color Primaries: ITU-R BT.2020
. Metadata: SMPTE ST 2086, MaxFALL, MaxCLL"
https://www.cta.tech/News/Press-Rele...-Displays.aspx
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post #343 of 581 Old 09-18-2018, 11:50 PM - Thread Starter
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HDR video distribution over IP

HDR video distribution over IP / Gigabit Ethernet:
"Atlona has developed an algorithm for OmniStream that enables full preservation of Dolby Vision HDR metadata while maintaining visually lossless image encoding and decoding, for full interoperability with Dolby Vision HDR streaming media players, Ultra HD Blu-ray devices, and displays.
Atlona’s OmniStream AV over IP product line overcomes the limitation of typical video distribution systems over Gigabit Ethernet networks that eliminate the metadata necessary for Dolby Vision 12-bit at 60 frame-per-second playback, or uncompressed distribution systems that are limited to only 30 frames per second."
https://atlona.com/omnistream-av-over-ip-dolby-vision/



4K HDR source (UHD Blu-ray player, streaming player, …) > HDR video signal >> HDMI >> 4K HDR display

4K HDR source > HDR video signal >> HDMI >> AV_over_IP compression encoder >> Gigabit Ethernet network >> AV_over_IP decompression decoder >> HDMI >> 4K HDR display




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post #344 of 581 Old 09-19-2018, 12:46 PM
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Quote:
Originally Posted by DanBa View Post
HDR video distribution over IP / Gigabit Ethernet:
"Atlona has developed an algorithm for OmniStream that enables full preservation of Dolby Vision HDR metadata while maintaining visually lossless image encoding and decoding,
On a scientific level, is "visually lossless" a marketing term which actually means "NOT at all lossless", like every other lossy compression system we have in wide use - MPEG, AVC, HEVC etc?

They are all "visually lossless" but I've need seen such a misleading term before.

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post #345 of 581 Old 09-20-2018, 12:00 AM - Thread Starter
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"Video compression deals with the compression of still images put in a sequence. Theory for image compression also applies to video compression.
Images and videos tend to contain very redundant information. The main theme of image and video compression therefore revolves around exploiting various kinds of redundancies.
Only exploiting the redundancies directly leads to mathematically lossless compression, where we can reconstruct an image or video sequence perfectly equivalent to the original, but (hopefully) using fewer bits than the original source.
In lossy compression, we reduce bitrate further by introducing errors in the reconstruction. If errors are introduced in a way that is not normally perceptible by humans, we call it visually lossless compression."
https://brage.bibsys.no/xmlui/bitstr...pdf?sequence=1

"Atlona has adopted a video compression technology developed for critical-quality image viewing in broadcast and production video applications, known as SMPTE VC-2, or Dirac Pro by the BBC, its original inventor. VC-2 addresses the challenge of transporting multigigabit video content over networks through a light compression algorithm that delivers visually lossless, pristine-quality representation of the master source video for postproduction and archiving. VC-2 is standardized by the Society of Motion Picture and Television Engineers as SMPTE 2042."
http://atlona.com/wp-content/uploads...tworked_AV.pdf

". Video transport over IP networks with VC-2 HQ: Visually lossless and low latency video networking on 1G and 10G Ethernet
. Image and video storage with VC-2 HQ: Mathematically lossless for archiving"
https://www.silexinside.com/content/...?type=resource
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post #346 of 581 Old 09-21-2018, 12:59 AM - Thread Starter
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SL-HDR2 trial

Live HDR trial with SL-HDR2 (aka Technicolor HDR)
https://advanced-television.com/2018...-in-september/
https://www.etsi.org/deliver/etsi_ts...02v010101p.pdf
https://twitter.com/sfaure/status/1042714281639387136



SL-HDR2 = PQ10 (i.e. "HDR10") + SMPTE ST 2094-20/30 color volume transformation dynamic metadata.

When receiving SL-HDR2, HDR10-compliant TVs ignore the SL-HDR2 dynamic metadata and decode the PQ video.

Are there TVs compatible with SL-HDR2 for the time being?

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post #347 of 581 Old 09-29-2018, 02:54 AM - Thread Starter
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Ultra HD Forum guidelines

Ultra HD Forum guidelines (4 years of work) in 1 picture!
https://ultrahdforum.org/resources/
https://twitter.com/thierryfautier/s...15022255915008

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post #348 of 581 Old 10-03-2018, 06:59 AM - Thread Starter
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Dolby Vision and HDR10+ in the same streaming device

New Amazon Fire TV Stick 4K packs Dolby Vision and HDR10+ (and HDR10) in the same device.
https://www.techradar.com/news/amazo...he-same-device

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post #349 of 581 Old 10-03-2018, 07:05 AM
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Quote:
Originally Posted by DanBa View Post
New Amazon Fire TV Stick 4K packs Dolby Vision and HDR10+ (and HDR10) in the same device.
https://www.techradar.com/news/amazo...he-same-device
The specs on the page also list HLG. So it seems the only thing it can't do (or doesn't mention) is YouTube's VP9/2.
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post #350 of 581 Old 10-06-2018, 02:04 AM - Thread Starter
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Frostbite & HDR

Frostbite (game engine) & HDR
https://en.wikipedia.org/wiki/Frostbite_(game_engine)
https://twitter.com/kechogarcia/stat...64603633713152



Frostbite can and will target any HDR standard that makes sense.




Dolby build a custom display mapping for each panel to get the best from it, and achieve standardization of look across displays.




Game can look quite different on each HDR10 TV (i.e. a very loose interpretation of the original creative intent), due to lack of display mapping standardization across manufacturers.



To address this HDR10 issue, display mapping is done at the game level (i.e. game console or PC).
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post #351 of 581 Old 10-07-2018, 12:58 AM - Thread Starter
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Streaming devices & HDR formats:
https://www.techhive.com/article/331...g-devices.html



Chromecast Ultra also supports Dolby Vision.
https://www.flatpanelshd.com/review....&id=1497439714


Streaming services & HDR formats:



YouTube supports HDR10 (i.e. VP9-PQ YouTube HDR) and HLG (i.e. VP9-HLG YouTube HDR).

A VP9-HLG video:
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post #352 of 581 Old 10-07-2018, 01:44 AM
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Quote:
Originally Posted by DanBa View Post
Streaming devices & HDR formats:
https://www.techhive.com/article/331...g-devices.html

Spoiler!
Missing from that table: The Playstation 4 (not Pro) also supports HDR10. It doesn't support 4K, but it DOES support HDR10.

Quote:
Originally Posted by DanBa View Post
Streaming services & HDR formats:

Spoiler!
Unverified in that table: There's no proof whatsoever, zero, that Amazon are streaming HDR10+. Press releases from marketeers are all that's needed these days? That's sad.

No consumer has seen HDR10+. It has only been shown in private demo rooms, behind closed doors, at trade shows by strict invitation only. They were still doing this last month at IFA!
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post #353 of 581 Old 10-07-2018, 01:52 PM
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Quote:
Originally Posted by mrtickleuk View Post
Missing from that table: The Playstation 4 (not Pro) also supports HDR10. It doesn't support 4K, but it DOES support HDR10.



Unverified in that table: There's no proof whatsoever, zero, that Amazon are streaming HDR10+. Press releases from marketeers are all that's needed these days? That's sad.

No consumer has seen HDR10+. It has only been shown in private demo rooms, behind closed doors, at trade shows by strict invitation only. They were still doing this last month at IFA!
That's because Samsung is working on DV support. The Samsung displays capable of HDR10+ will have it as primary format for all Amazon content. Netflix, and Vudu will be DV. If they can get more studio support, then HDR10+ will be primary on Samsung didplays for BD playback.

HDR10+ development required more time then Samsung thought, now they are stuck between a rock and hard place. So they are playing the long game, hoping their format picks up steam.

Just a guess.

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post #354 of 581 Old 10-09-2018, 09:36 AM
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This HDGuru article says Roku added HLG to the 2018 lineup in order to support YouTube HLG. Corroborated by this CR article.
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post #355 of 581 Old 10-13-2018, 01:58 AM - Thread Starter
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Av1 & hdr

"Tech giants are lined up behind the 'royalty-free' 4K codec AV1
Get ready for a new video format rolling out later this year."
https://www.engadget.com/2018/03/28/...etflix-amazon/

With HEVC, HDR metadata are transported by HEVC SEI messages.




With AV1, HDR metadata will be transported by Metadata OBU messages.




With VP9, HDR metadata can’t be transported by a VP9 message. They are conveyed by a WebM container at the beginning of a VP9 session: VP9 can’t support frame by frame Dynamic HDR such as Dolby Vision, VP9 can only support HDR10 (i.e. VP9-PQ YouTube HDR) and HLG (i.e. VP9-HLG YouTube HDR).



Apparently, TVs will also support AV1 from 2020, when AV1-compliant SoC will be available.



HDR AV1 video >> Internet >> future TV with HDR AV1 decoding


Current HDR TVs will be able to play HDR AV1 videos via future cheap streaming players such as Amazon Fire TV Stick 4K or Chromecast Ultra.

HDR AV1 video >> Internet >> future streaming player with HDR AV1 decoding > decoded HDR video signal >> HDMI >> current HDR TV
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Universal audio/video receiver (Dolby Atmos, DTS:X, etc.) is achieved.
Universal HDR TV (HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR, Dynamic HDR) is required.

Push for universal HDR TV!
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post #356 of 581 Old 10-20-2018, 12:52 AM - Thread Starter
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Dolby Vision with Minimal Enhancement Layer

"Announced in September, Microsoft has now publicly released the update that adds Dolby Vision support for streaming apps on Xbox One. However, at this time, Dolby Vision is only supported for Netflix.
It should be stressed that this new "low latency profile" is not compatible with all Dolby Vision TVs. LG’s 2016 TVs as well as Vizio TVs are notably missing from the list of supported devices. Microsoft claims that Dolby is getting ”working with TV OEMs to update TVs currently in market”."
https://www.flatpanelshd.com/news.ph...&id=1539730922

I can’t find a Dolby document mentioning this low latency profile.

Without the information on the low latency profile, it is my understanding that there are two main versions of Dolby Vision:
. Dolby Vision before the introduction of the MEL (Minimal Enhancement Layer)
. Dolby Vision with MEL



Goal of MEL: "The MEL can be used to minimize the processing requirements for the enhancement layer and thus ensure broader use among UltraHD (Blu-ray) SoCs."
https://www.dolby.com/us/en/technolo...les-levels.pdf

A double layer Dolby Vision video stream is composed of a base layer video stream and an enhancement layer video stream.

The full enhancement layer (FEL) is a HEVC video stream with embedded Dolby Vision metadata: it requires a SoC to be capable of simultaneously decoding two video streams (base layer video stream and FEL video stream).

The minimal enhancement layer MEL, a constrained FEL, only consists of metadata: it requires a SoC to be capable of only decoding one single base layer video stream.





original Dolby Vision profile 4 video file stored on a (Netflix) streaming server >> Internet >> original Dolby Vision streaming device > 12-bit Dolby Vision video signal >> HDMI >> original Dolby Vision TV

original Dolby Vision profile 4 video file >> Internet >> new certified Dolby Vision with MEL-compliant streaming device (Xbox One S/X) > 10-bit Dolby Vision video signal >> HDMI >> new certified Dolby Vision with MEL-compliant TV

original Dolby Vision profile 4 video file >> Internet >> Dolby Vision with MEL-compliant streaming device > 10-bit Dolby Vision video signal >> HDMI >> new certified Dolby Vision with FEL-compliant TV (capable of double decoding and capable of identifying & processing a Dolby Vision with MEL bitstream)


"An original profile 4 bitstream with a full enhancement layer distributed after December 31, 2017, may not produce the high dynamic range Dolby Vision video signal on all Dolby Vision devices." [Dolby]

original Dolby Vision profile 4 video file >> Internet >> original Dolby Vision streaming device > 12-bit Dolby Vision video signal >> HDMI >> interoperability issue >> Dolby Vision with MEL-compliant TV 

original Dolby Vision profile 4 video file >> Internet >> streaming device able to convert original FEL to MEL > 10-bit Dolby Vision with MEL video signal >> HDMI >> interoperability issue >> original Dolby Vision TV


Original Dolby Vision TV: 2016 LG OLED TV, Vizio TV, ... (for the time being not yet updated)
(New certified) Dolby Vision with FEL-compliant TV (capable of double decoding and capable of identifying & processing a Dolby Vision with MEL bitstream): 2017/2018 LG OLED TV, ...
(New certified) Dolby Vision with MEL-compliant TV: Sony TV, ...
https://www.dolby.com/us/en/categori...compatible.pdf

Original Dolby Vision TVs are capable of simultaneously decoding two video streams like the Dolby Vision with FEL-compliant TVs.
They can be more or less easy to be updated to be compliant with the latest Dolby Vision version: they can do more, i.e. double decoding; they can also do less, i.e. single decoding.
https://twitter.com/xQuatroK/status/1051972830651445254
https://twitter.com/VIZIO/status/1051962330475634690
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Universal audio/video receiver (Dolby Atmos, DTS:X, etc.) is achieved.
Universal HDR TV (HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR, Dynamic HDR) is required.

Push for universal HDR TV!

Last edited by DanBa; 10-20-2018 at 04:11 AM.
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post #357 of 581 Old 10-27-2018, 01:57 AM - Thread Starter
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Cambridge UHD Blu-ray player & Dolby Vision with MEL & HDR10+

"Hello xxxxxx,

These are all the things that have been confirmed, while there may be more:

1. HDR10+ support
2. Supports Sony TV Dolby Vision
3. Bug fixes
4. HDMI IN supports Dolby Vision
5. Add 3 Aspect Ratio modes "21:9 Movable, 21:9 Fixed and 21:9 Cropped"

If you ever have any other questions or concerns in the future, please don't hesitate to reach out.

Thank you and we wish you the best with your future listening.

Best Regards," [Cambridge Audio]
https://www.avsforum.com/forum/149-b...l#post56926180

The Cambridge CXUHD is a customized Oppo UDP-203 UHD Blu-ray player.
Apparently, Oppo is also "exploring the feasibility of bringing hdr10+ within the next few firmware updates."
https://twitter.com/OPPODIGITAL/stat...78835821834240
https://www.avsforum.com/forum/465-h...l#post55533420





The Cambridge CXUHD will support Sony TV Dolby Vision, i.e. Dolby Vision with MEL (Minimal Enhancement Layer) apparently, which is already supported by Oppo.

"For Dolby Vision profile 7: Base layer/enhancement layer full alignment is required, as documented in Blu-ray Disc Association Specifications." [Dolby] 
https://www.dolby.com/us/en/technolo...les-levels.pdf

dual layer Dolby Vision (i.e. Dolby Vision Profile 7 with base layer & Full Enhancement Layer) AV file stored on UHD Blu-ray disc > UHD Blu-ray player: decoding of the HEVC base layer video stream and the HEVC enhancement layer video stream > reassembling the video signal from the base layer image, the enhancement layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of simultaneously decoding two HEVC video streams (same profile for decoding in TV or in player)

"For Dolby Vision profile 7: The MEL can be used to minimize the processing requirements for the enhancement layer and thus ensure broader use among UltraHD Blu-ray SoCs." [Dolby] 

dual layer Dolby Vision AV file stored on UHD Blu-ray disc > UHD Blu-ray player: converting FEL to MEL (i.e. removing the HEVC video stream of the full enhancement layer) > decoding of the HEVC base layer video stream > reassembling the video signal from the base layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of only decoding one single HEVC video stream
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Universal audio/video receiver (Dolby Atmos, DTS:X, etc.) is achieved.
Universal HDR TV (HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR, Dynamic HDR) is required.

Push for universal HDR TV!
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post #358 of 581 Old 10-27-2018, 06:51 AM
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Quote:
Originally Posted by DanBa View Post
The Cambridge CXUHD will support Sony TV Dolby Vision, i.e. Dolby Vision with MEL (Minimal Enhancement Layer) apparently, which is already supported by Oppo.

"For Dolby Vision profile 7: Base layer/enhancement layer full alignment is required, as documented in Blu-ray Disc Association Specifications." [Dolby] 
https://www.dolby.com/us/en/technolo...les-levels.pdf

dual layer Dolby Vision (i.e. Dolby Vision Profile 7 with base layer & Full Enhancement Layer) AV file stored on UHD Blu-ray disc > UHD Blu-ray player: decoding of the HEVC base layer video stream and the HEVC enhancement layer video stream > reassembling the video signal from the base layer image, the enhancement layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of simultaneously decoding two HEVC video streams (same profile for decoding in TV or in player)

"For Dolby Vision profile 7: The MEL can be used to minimize the processing requirements for the enhancement layer and thus ensure broader use among UltraHD Blu-ray SoCs." [Dolby] 

dual layer Dolby Vision AV file stored on UHD Blu-ray disc > UHD Blu-ray player: converting FEL to MEL (i.e. removing the HEVC video stream of the full enhancement layer) > decoding of the HEVC base layer video stream > reassembling the video signal from the base layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of only decoding one single HEVC video stream
Thanks for posting this. I think I understand it, but block diagrams would be a hell of a lot easier to understand.

When they say their player will support "Sony TV Dolby Vision", what I really want to know is whether they mean it will ONLY support Sony TV Dolby Vision output, or whether it will ALSO support "full fat" Dolby Vision output as well. The way they have phrased it is very confusing.
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HDMI 2.0 4K modes | Dolby & DTS core+outer audio tracks on (UHD) Blu-Rays | Hello to Jason Isaacs
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post #359 of 581 Old 10-27-2018, 10:48 AM - Thread Starter
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It is my understanding that the Cambridge CXUHD supports Dual Stream Dolby Vision with Full Enhancement Layer for the time being.

dual stream Dolby Vision AV file stored on UHD Blu-ray disc > UHD Blu-ray player (i.e. external Dolby Vision decoder): HEVC decoders: decoding of the HEVC base layer video stream and the HEVC enhancement layer video stream > composer: reassembling the video signal from the base layer image, the enhancement layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of simultaneously decoding two HEVC video streams like the LG OLED TV




Apparently, the Cambridge CXUHD will support Dual Stream Dolby Vision with Minimum Enhancement Layer.

dual stream Dolby Vision AV file stored on UHD Blu-ray disc > UHD Blu-ray player (i.e. external Dolby Vision decoder): converting FEL to MEL (i.e. removing the HEVC video stream of the full enhancement layer) > HEVC decoder: decoding of the HEVC base layer video stream > composer: reassembling the video signal from the base layer image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of only decoding one single HEVC video stream like the Sony TV



Dolby Vision Display Management = Dolby Vision Display Adaptation or Dolby Vision Display Mapping

The dual stream Dolby Vision is also documented in UHD Blu-ray Specifications or in DASH-IF Interoperability Points.
https://dashif.org/docs/DASH-IF-IOP-v4.2-clean.htm


Single stream Dolby Vision – External streaming device & Dolby Vision TV capable of double stream decoding

single stream Dolby Vision AV file stored on streaming server >> Internet >> external streaming device: HEVC decoder: decoding of the HEVC video stream > composer: reassembling the video signal from the decoded image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of simultaneously decoding two HEVC video streams




Single stream Dolby Vision – External streaming device & Dolby Vision TV capable of single stream decoding

single stream Dolby Vision AV file stored on streaming server >> Internet >> external streaming device: HEVC decoder: decoding of the HEVC video stream > composer: reassembling the video signal from the decoded image and the metadata > Dolby Vision video signal >> HDMI >> Dolby Vision TV capable of only decoding one single HEVC video stream

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Universal audio/video receiver (Dolby Atmos, DTS:X, etc.) is achieved.
Universal HDR TV (HDR10, Dolby Vision, HEVC HLG HDR, VP9-HLG / VP9-PQ YouTube HDR, Dynamic HDR) is required.

Push for universal HDR TV!
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post #360 of 581 Old 10-27-2018, 11:45 AM
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Thankyou, that's great! Are you representing "streaming video" (top right) and "external 4k blu-ray player" (left) together on the same diagram, in each case? There seem to be two paths.

If a Sony TV is faced with a double-stream dolby signal, presumably it can't decode it. So double-stream dolby signal will completely stop being used by everyone, in case the customer only has a Sony TV?

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HDMI 2.0 4K modes | Dolby & DTS core+outer audio tracks on (UHD) Blu-Rays | Hello to Jason Isaacs
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