Dolby Vision now possible through MP4 Mux.

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ragico
Posts: 258
Joined: Fri Feb 15, 2019 1:09 am

Re: Dolby Vision now possible through MP4 Mux.

Post by ragico »

RESET_9999 wrote:
Tue Jul 28, 2020 1:52 am
shawnc22 wrote:
Tue Jul 28, 2020 1:39 am
Oh I had no idea the x700 supported single track dual layer files.
The saving private ryan flickering issue is also another big concern to me. too bad it's FEL, I can't test the single layer el+rpu on the x700. But I don't recall that I noticed flickering when I watched the dual layer TS.
I have it in dual layer TS on my x700 and there is no flickering.
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

So, I did more comparison with my x700 and I just can't get a perfect match with any of the single-layer BL+EL+RPU( FEL or MEL). I'm starting to think that the Shield just can't play them properly because I can get a perfect match with the genuine profile 5 full range files from streaming services but never with the uhd-bd rip. It actually makes sense, maybe the shield was never meant to play dual layer rip.

Using a real profile 5(BL+RPU) test pattern, the Vertex completely fixes the red push issue and the colors match the x700 perfectly.

Shield Vertex fix VS x700 default mode: https://screenshotcomparison.com/comparison/4939

Shield Vertex fix VS Shield RGB bt2020 default: https://screenshotcomparison.com/comparison/4938

test pattern: https://drive.google.com/file/d/1JURFyX ... sp=sharing

Spears & Munsil disc.
I see a red push even with the Vertex.

Shield Vertex fix VS Shield RGB bt2020 default https://screenshotcomparison.com/comparison/4940

Shield Vertex fix VS x700 default mode: https://screenshotcomparison.com/comparison/4941

x700 default mode VS Shield RGB bt2020 default: https://screenshotcomparison.com/comparison/4942
Last edited by RESET_9999 on Tue Jul 28, 2020 4:15 pm, edited 1 time in total.
shawnc22
Posts: 637
Joined: Tue Jan 21, 2020 7:40 am

Re: Dolby Vision now possible through MP4 Mux.

Post by shawnc22 »

Could definitely be the case that the Shield just wasn’t meant to play back these kind of files. There is confirmed support for profile 4 MEL, though, so I’m wondering what kind of media they had in mind for the implementation. The only official profile 4 video I can think of is the lg demo from here: https://4kmedia.org/lg-dolby-vision-uhd-4k-demo/. I haven’t looked at this video closely or compared the playback off anything else to see if there’re any evidence of the red push here.
SamuriHL
Posts: 2324
Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

That's really bizarre. That's completely different than the results I saw. I'm not able to take screen shots to show it, but, the picture was identical on the SM benchmark demo between my UB820 and the Shield. And I was not using the Integral 2 to correct anything at that time. And yes, I do get the red push problem in other videos. That Doctor Sleep sample that shawnc22 posted, as an example, I compared with my LG internal player vs the Shield and definitely saw the problem. So I have no idea what the pattern is here.
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

SamuriHL wrote:
Tue Jul 28, 2020 3:53 pm
That's really bizarre. That's completely different than the results I saw. I'm not able to take screen shots to show it, but, the picture was identical on the SM benchmark demo between my UB820 and the Shield. And I was not using the Integral 2 to correct anything at that time. And yes, I do get the red push problem in other videos. That Doctor Sleep sample that shawnc22 posted, as an example, I compared with my LG internal player vs the Shield and definitely saw the problem. So I have no idea what the pattern is here.
The difference can be hard to see but if you compare a scene with a lot of red colors, it's more obvious.
like frame 5066

Image
SamuriHL
Posts: 2324
Joined: Mon Jun 14, 2010 5:32 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by SamuriHL »

RESET_9999 wrote:
Tue Jul 28, 2020 4:07 pm
SamuriHL wrote:
Tue Jul 28, 2020 3:53 pm
That's really bizarre. That's completely different than the results I saw. I'm not able to take screen shots to show it, but, the picture was identical on the SM benchmark demo between my UB820 and the Shield. And I was not using the Integral 2 to correct anything at that time. And yes, I do get the red push problem in other videos. That Doctor Sleep sample that shawnc22 posted, as an example, I compared with my LG internal player vs the Shield and definitely saw the problem. So I have no idea what the pattern is here.
The difference can be hard to see but if you compare a scene with a lot of red colors, it's more obvious.
like frame 5066

Image
I'll take a look tonight.
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

shawnc22 wrote:
Tue Jul 28, 2020 3:52 pm
The only official profile 4 video I can think of is the lg demo from here: https://4kmedia.org/lg-dolby-vision-uhd-4k-demo/. I haven’t looked at this video closely or compared the playback off anything else to see if there’re any evidence of the red push here.
definitely going to try that file. thank's
Darthjipsu
Posts: 6
Joined: Sun Jun 14, 2020 4:10 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by Darthjipsu »

RESET_9999 wrote:
Tue Jul 28, 2020 3:27 pm
So, I did more comparison with my x700 and I just can't get a perfect match with any of the single-layer BL+EL+RPU( FEL or MEL). I'm starting to think that the Shield just can't play them properly because I can get a perfect match with the genuine profile 5 full range files from streaming services but never with the uhd-bd rip. It actually makes sense, maybe the shield was never meant to play dual layer rip.

Using a real profile 5(BL+RPU) test pattern, the Vertex completely fixes the red push issue and the colors match the x700 perfectly.

Shield Vertex fix VS x700 default mode: https://screenshotcomparison.com/comparison/4939

Shield Vertex fix VS Shield RGB bt2020 default: https://screenshotcomparison.com/comparison/4938

test pattern: https://drive.google.com/file/d/1JURFyX ... sp=sharing

Spears & Munsil disc.
I see a red push even with the Vertex.

Shield Vertex fix VS Shield RGB bt2020 default https://screenshotcomparison.com/comparison/4940

Shield Vertex fix VS x700 default mode: https://screenshotcomparison.com/comparison/4941

x700 default mode VS Shield RGB bt2020 default: https://screenshotcomparison.com/comparison/4942
I've conduct the same comparison with your pattern DV file.
I compared the mp4 played with my Shield RGB bt2020 and with in-app Philips
Shield Normal VS Philips TV https://screenshotcomparison.com/comparison/4946

And my results seems slightly differents
Cyan is brighter with my shield but i'm not sure about a red push
it's very strange
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Darthjipsu wrote:
Tue Jul 28, 2020 5:15 pm
I've conduct the same comparison with your pattern DV file.
I compared the mp4 played with my Shield RGB bt2020 and with in-app Philips
Shield Normal VS Philips TV https://screenshotcomparison.com/comparison/4946

And my results seems slightly differents
Cyan is brighter with my shield but i'm not sure about a red push
it's very strange
interesting..... yours appear undersaturated compared to the philips and yes indeed, very different than my comparisons but I noticed your taking pictures in a bright room. My pictures were taken in a complete dark room ( black velvet everywhere) without any light. Perhaps thats the difference ? I dont know but I'm clearly getting the same color difference no matter how many comparisons i do.
Also, I assume your camera settings are locked?

EDIT:, you sure the signal is RGB ? I don't know what DV type the Philips tv supports, maybe LLDV ? that would explain why the red color seems ok.
Last edited by RESET_9999 on Tue Jul 28, 2020 6:57 pm, edited 2 times in total.
Darthjipsu
Posts: 6
Joined: Sun Jun 14, 2020 4:10 pm

Post by Darthjipsu »

RESET_9999 wrote:
Tue Jul 28, 2020 6:01 pm
Darthjipsu wrote:
Tue Jul 28, 2020 5:15 pm
I've conduct the same comparison with your pattern DV file.
I compared the mp4 played with my Shield RGB bt2020 and with in-app Philips
Shield Normal VS Philips TV https://screenshotcomparison.com/comparison/4946

And my results seems slightly differents
Cyan is brighter with my shield but i'm not sure about a red push
it's very strange
interesting..... yours appear undersaturated compared to the philips and yes indeed, very different than my comparisons but I noticed your taking pictures in a bright room. My pictures were taken in a complete dark room ( black velvet everywhere) without any light. Perhaps thats the difference ? I dont know but I'm clearly getting the same color difference no matter how many comparisons i do.
Also, I assume your camera settings are locked?

It's not in a bright room, just ambilight activated. I could try to turn off ambilight.
And yes I locked my camera Settings (ISO, Shutter Speed, Aperture, White Balance)
I will also try later today or tomorrow the video with plex running on Philips to see if the problem come from Multimedia App or Shield TV
lexyz
Posts: 120
Joined: Fri May 08, 2020 5:32 am

Re: Dolby Vision now possible through MP4 Mux.

Post by lexyz »

RESET_9999 wrote:
Tue Jul 28, 2020 3:27 pm
Spears & Munsil disc.
I see a red push even with the Vertex.
x700 default mode VS Shield RGB bt2020 default: https://screenshotcomparison.com/comparison/4942
Very close to what I see on my tv
RESET_9999 wrote:
Tue Jul 28, 2020 3:27 pm
test pattern: https://drive.google.com/file/d/1JURFyX ... sp=sharing
I can't tell there is any noticeable red push
Bravia internal Plex vs Shield Plex
Bravia's internal apps are brighter, so ignore brightness difference
https://screenshotcomparison.com/comparison/4951
Bravia XF90, Shield TV Pro'19, UBP-X700
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re:

Post by RESET_9999 »

Darthjipsu wrote:
Tue Jul 28, 2020 6:08 pm

It's not in a bright room, just ambilight activated. I could try to turn off ambilight.
And yes I locked my camera Settings (ISO, Shutter Speed, Aperture, White Balance)
I will also try later today or tomorrow the video with plex running on Philips to see if the problem come from Multimedia App or Shield TV
do you have any device that can tell you if you are getting RGB 8bit DV or LLDV 12bit?
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

lexyz wrote:
Tue Jul 28, 2020 6:35 pm

I can't tell there is any noticeable red push
Bravia internal Plex vs Shield Plex
Bravia's internal apps are brighter, so ignore brightness difference
https://screenshotcomparison.com/comparison/4951
yeah, with a Sony TV, you shouldn't have any red push with genuine profile 5 files or from any streaming apps.
but thats a huge brightness difference!!
Darthjipsu
Posts: 6
Joined: Sun Jun 14, 2020 4:10 pm

Dolby Vision now possible through MP4 Mux.

Post by Darthjipsu »

RESET_9999 wrote:
Tue Jul 28, 2020 7:26 pm
Darthjipsu wrote:
Tue Jul 28, 2020 6:08 pm

It's not in a bright room, just ambilight activated. I could try to turn off ambilight.
And yes I locked my camera Settings (ISO, Shutter Speed, Aperture, White Balance)
I will also try later today or tomorrow the video with plex running on Philips to see if the problem come from Multimedia App or Shield TV
do you have any device that can tell you if you are getting RGB 8bit DV or LLDV 12bit?
My TV tells me that I receive 8bit RGB when using Nvidia Shield
RESET_9999
Posts: 2093
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Darthjipsu wrote:
Tue Jul 28, 2020 7:30 pm

My TV tells me that I receive 8bit RGB when using Nvidia Shield
Interesting. is it an OLED ? I wonder if that could matter.
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