topic Re: Does Xperia 1 support Dolby Vision? in 1 Series

Does Xperia 1 support Dolby Vision?

ds2mph — Mon, 08 Jul 2019 13:45:13 GMT

NTT Docomo says Xperia 1 supports HDR10, HLG, and Dolby vision, is it true?

https://www.nttdocomo.co.jp/product/smart_phone/so03l/spec.html?icid=CRP_PRD_so03l_to_CRP_PRD_so03l_spec

Re: Does Xperia 1 support Dolby Vision?

NunoSEN2 — Mon, 08 Jul 2019 14:59:35 GMT

According to the Xperia 1 specifications that can not be true because the screen uses a 10bit tonal gradation (8bit with 2bit smoothing) and the Dolby Vision uses 12bit.

Besides, according to the Dolby site the phones with Dolby Vision are: https://www.dolby.com/us/en/technologies/mobile/dolby-vision.html.

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Mon, 08 Jul 2019 15:25:24 GMT

Does it mean LG G6 has 12-bit panel and uses a 12-bit tonal gradation?

Re: Does Xperia 1 support Dolby Vision?

NunoSEN2 — Mon, 08 Jul 2019 15:49:14 GMT

@ds2mph ;

I don't have much knowledge in LG phones but if Dolby says they are complient with Dolby Vision then I suppose so (but only when viewing Dolby Vision content).

In the LG G6 webpage what is said is that the content must also be recorded in Dolby Vision format (or HDR10) to take advantage of it, so probably in normal viewing you don't have the full color depth.

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Tue, 09 Jul 2019 05:38:54 GMT

I think that phones on the list (LG G6, iphone8,xs,xr) can just play HDR videos with Dolby vision, not fully support 12-bit because they seems to have 8-bit panel.

Now I wonder whether NTT Docomo wrote it by mistake, or not. I'm waiting for a reply from official staffs @Jonas @Martin

Thanks for your reply @NunoSEN2

By the way, how did you tag me? I can't tag someone @NunoSEN2

Re: Does Xperia 1 support Dolby Vision?

Lord_viridis — Tue, 09 Jul 2019 11:08:59 GMT

@NunoSEN2 wrote:
Hi @ds2mph ;
According to the Xperia 1 specifications that can not be true because the screen uses a 10bit tonal gradation (8bit with 2bit smoothing) and the Dolby Vision uses 12bit.
Besides, according to the Dolby site the phones with Dolby Vision are: https://www.dolby.com/us/en/technologies/mobile/dolby-vision.html.

Looks like that list needs a bit of updating tbh.

I'm pretty sure more devices than that are capable of DV

Re: Does Xperia 1 support Dolby Vision?

NunoSEN2 — Wed, 10 Jul 2019 14:48:03 GMT

@ds2mph wrote:
I think that phones on the list (LG G6, iphone8,xs,xr) can just play HDR videos with Dolby vision, not fully support 12-bit because they seems to have 8-bit panel.
Now I wonder whether NTT Docomo wrote it by mistake, or not. I'm waiting for a reply from official staffs @Jonas @Martin
Thanks for your reply @NunoSEN2
By the way, how did you tag me? I can't tag someone @NunoSEN2

@ds2mph , I think you need to be a Pioneer, Moderator or Xperia Support Staff to tag Forum users.

Re: Does Xperia 1 support Dolby Vision?

digitalray — Thu, 11 Jul 2019 13:42:27 GMT

dolby vision has several DV profiles for TVs, Mobile Phones, Tablets and cinemas.

12 bit is only supported in single cases for cinema movies, but not really for DV TVs, they only support 10bit display (although the processors can handle 12 bit and transfer it to the 10bit (or rahter "9.5bit" panels with about 500 million different colors.)

what the xperia one does, is taking a software HDR Signal and then it's putting it it to a display with a 50% BT2020 color space in case of the XF90 Dolby Vision enabled TV.

in my definition that phone could support DV from the bits as processing should be quite possible and thats the only thing what dolby is certifying, they dont care about the display as there are no tv or smartphone displays that are higher than 10bit on the market.

maybe dolby just needs more time to certify that phone as DV compatible and to create a phone specifiv DV profile.

Re: Does Xperia 1 support Dolby Vision?

NunoSEN2 — Thu, 11 Jul 2019 14:04:03 GMT

@digitalray78 ;

I think any display to be Dolby Vision compliant must support a 12bit color depth, please read here: https://www.dolby.com/us/en/technologies/dolby-vision/dolby-vision-white-paper.pdf,

or here specific for mobiles HDR information: https://www.androidauthority.com/mobile-hdr-necessary-800786/

Re: Does Xperia 1 support Dolby Vision?

digitalray — Thu, 11 Jul 2019 14:21:51 GMT

"The single layer HEVC Main-10 profile of Dolby Vision can be decoded by a standard HEVC decoder, then post-processed using a Dolby Vision module to produce the full range 12 bit Dolby Vision signal. "

So.. the DV Signal is 10 bit, it get's 12bit when the final consumer product processor it to it's color space with the "dolby vision module". and then it gets projected onto whatever display, in consumer times today these are 10bit displays for tv and smartphones.

the XF90 TV Display can output 1000 nits total brightness (about 600 in usual scenes where the whole screen is not total white) but only 500 million different colors, thats half of 10 bit capability.

so you are right, for a DV certification, the Xperia One needs to be able to produce a 12bit signal in its processor . The Xperia One supports BT2020 color space, although BT2020 can be 10bit or 12bit.

so i guess we are left with originally 10bit 2020 HDR10 Signals that are not even DV processed to 12bit on the Xperia One and are either way displayed on it's not even 10bit display, which makes sense in the end if the displays can not handle 12bit or even a full 10 bit anyway (xp one display is a 8+2 FRC Display, more info here https://www.newsshooter.com/2019/03/07/sony-xperia-1-worlds-first-219-cinemawide-4k-hdr-oled-display-smartphone/)

read this: https://referencehometheater.com/2018/commentary/sony-x900f-image-quality-review/

and remember that the XF90 is officially Dolby Vision certified and enabled.

a nice german article for translation purposes: https://www.heimkinoraum.de/tests/dolby-vision-vs-uhd-premium-hdr10-166

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Sat, 13 Jul 2019 08:41:16 GMT

Guys Good news here

Re: Does Xperia 1 support Dolby Vision?

chienboy — Sat, 13 Jul 2019 08:52:07 GMT

Cant see your picture?
What is the good news?

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Sat, 13 Jul 2019 09:47:19 GMT

I contacted NTT Docomo via email and they confirmed Xperia 1 is compatible with Dolby vision.

Re: Does Xperia 1 support Dolby Vision?

NunoSEN2 — Sat, 13 Jul 2019 12:56:18 GMT

@ds2mph;

It's not NTT Docomo you should contact to clarify the question but Sony Mobile or Dolby.

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Sat, 13 Jul 2019 17:22:50 GMT

I also emailed Dolby and Sony mobile US,UK,Hong Kong, Taiwan but I haven't received any replies from them yet.

Re: Does Xperia 1 support Dolby Vision?

digitalray — Tue, 16 Jul 2019 23:06:44 GMT

I checked the specified Japanese manual, it doesn't mention Dolby vision, just Dolby Atmos for sound.

I guess the support confused these two.

Of course the processor might be able to include a Dolby module to process the 12 bit DV Signals, but the display is a 8+2 , so virtual 10bit display.

Re: Does Xperia 1 support Dolby Vision?

ds2mph — Wed, 17 Jul 2019 02:19:16 GMT

I got a reply from Sony mobile Hong Kong. According to them, maybe only SO-03L(Docomo) Xperia 1 is compatible with Dolby vision while others(J8110,J9110) not

Re: Does Xperia 1 support Dolby Vision?

digitalray — Thu, 18 Jul 2019 14:52:16 GMT

well...

i got reply from Sony Germany today, they contacted the Sony technical department and got back to me with this answer:

"Just some Dolby Vision Profiles support 12bit Color Depth, other (DV) Profiles support 10bit or even 8bit, but it depends on how the DV Signal is delivered and decoded."

so: DV Profiles can "support" 8bit, 10bit or 12 bit signals that get to the display.

this was also a reply to my question how a 10bit Sony HDR TV (XF90 / X900F) can display a 12bit Dolby Vision Signal and how it can be licensed and certified as a Dolby Vision TV and support DV in netflix as Dolby states 12bit for Dolby Vision. Obviously the Dolby Vision Signal from netflix is supporting a device specific and certified 10bit DV signal for this specific device display.

this tells me, that the Xperia One should be able to support Dolby Vision Profiles, not 12 bit, but 10 bit DV Profiles that produce a 10bit Signal for the 10bit Xperia One Display, but it did not get certified with a specific device profile for DV from Dolby yet.

maybe they did already in asia / japan, and they have an updated firmware already, as this is always the case with japanese products. asia gets it 6 months before europe.