Dolby Vision now possible through MP4 Mux.

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mattmarsden
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Joined: Mon Sep 03, 2018 10:36 am

Re: Dolby Vision now possible through MP4 Mux.

Post by mattmarsden »

Its the same size so I think everything is preserved. The decoding of the BL and EL is still requiring 2 HEVC streams to be decoded so in theory I think its the same - unless the Shield is dropping the decoding of the EL and just playing the BL + RPU - not sure how we can tell?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

hepe9 wrote: Wed Mar 04, 2020 10:28 pm Thank you, if you can try the profiles 4 and 7 like yusesope said
Unfortunately, the single-layer file created by yusesope won't play in my x700( they also stutter on the C8) so I can't really compare properly as i did with TS-DL vs Mp4-DL

Also, with the shield, I cannot go frame by frame making it very hard to compare exactly the same frame.

So i tried my best to go at the same frame...it's close but not identical.. single layer looks brighter and washed out a bit :( this is 4.6 shield vs DL Mp4 x700: https://slow.pics/c/PYlA3TLw
comparison made in a complete black room without any lights.. Camera settings locked.. Tripod and bluetooth triggering.

4.6 is identical to 7.6

The shield is sending a different signal than the appleTV and the x700:
So maybe the difference is because I used 2 different players. no way to be sure.
IMO, the shield just cannot play both BL and EL... so we get BL+RPU
Shield (up to date):
Image

AppleTV & x700:
Image


So if yusesope method ever works on the x700, I'll do a proper comparison
Sorry for my English.
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hepe9
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Re: Dolby Vision now possible through MP4 Mux.

Post by hepe9 »

Thanks you very much @RESET_9999

The frame is pretty close, good work.

So we can say thats is not the magic solution unfortunately
Angryunibrow
Posts: 104
Joined: Wed Nov 06, 2019 11:26 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by Angryunibrow »

RESET_9999 wrote: Wed Mar 04, 2020 11:39 pm
hepe9 wrote: Wed Mar 04, 2020 10:28 pm Thank you, if you can try the profiles 4 and 7 like yusesope said
Unfortunately, the single-layer file created by yusesope won't play in my x700( they also stutter on the C8) so I can't really compare properly as i did with TS-DL vs Mp4-DL

Also, with the shield, I cannot go frame by frame making it very hard to compare exactly the same frame.

So i tried my best to go at the same frame...it's close but not identical.. single layer looks brighter and washed out a bit :( this is 4.6 shield vs DL Mp4 x700: https://slow.pics/c/PYlA3TLw
comparison made in a complete black room without any lights.. Camera settings locked.. Tripod and bluetooth triggering.

4.6 is identical to 7.6

The shield is sending a different signal than the appleTV and the x700:
So maybe the difference is because I used 2 different players. no way to be sure.
IMO, the shield just cannot play both BL and EL... so we get BL+RPU
Shield (up to date):
Image

AppleTV & x700:
Image


So if yusesope method ever works on the x700, I'll do a proper comparison
Do the Shield and ATV4K look the same, meaning brighter and washed out compared to the DL File?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

I never tried my appleTV for DV rips. Does plex support DV as well or just MrMC (i dont own this app)?
Sorry for my English.
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Angryunibrow
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Re: Dolby Vision now possible through MP4 Mux.

Post by Angryunibrow »

RESET_9999 wrote: Thu Mar 05, 2020 12:13 am I never tried my appleTV for DV rips. Does plex support DV as well or just MrMC (i dont own this app)?
Infuse is the best, I think MrMC works as well but Infuse on the ATV4K is solid.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

is it free ? since I own a x700, I'm not very interrested in paying for SL.
Sorry for my English.
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ragico
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Re: Dolby Vision now possible through MP4 Mux.

Post by ragico »

RESET_9999 wrote: Wed Mar 04, 2020 11:39 pm
hepe9 wrote: Wed Mar 04, 2020 10:28 pm Thank you, if you can try the profiles 4 and 7 like yusesope said
Unfortunately, the single-layer file created by yusesope won't play in my x700( they also stutter on the C8)
Same for me with x700 and C8
Angryunibrow
Posts: 104
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Re: Dolby Vision now possible through MP4 Mux.

Post by Angryunibrow »

RESET_9999 wrote: Thu Mar 05, 2020 12:21 am is it free ? since I own a x700, I'm not very interrested in paying for SL.
Unfortunately not
FusionNeo
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Re: Dolby Vision now possible through MP4 Mux.

Post by FusionNeo »

RESET_9999 wrote: Wed Mar 04, 2020 11:39 pmIMO, the shield just cannot play both BL and EL... so we get BL+RPU
Starting to get the feeling this is the case. Disappointing if true.
Angryunibrow
Posts: 104
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Re: Dolby Vision now possible through MP4 Mux.

Post by Angryunibrow »

So I did the entire movie The Meg with DTS-HD MA 7.1

File played on the Shield
File played on the native Plex App on my C8 (others were having issues, mine played just fine - I'm on Wifi because of the 100Mb nic on the TV)

Really have no way in telling the difference between the two (if there was any)
Would like to know if the Shield, and or the TV is playing this correctly when muxed in a SL file.

Disappointing in the screen shots posted earlier.
ATD555
Posts: 45
Joined: Fri Feb 28, 2020 4:04 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by ATD555 »

My personal opinion on the matter is that this is a major breakthrough. If you have a Shield or a TV then you unfortunately have to deal with what you got for now until you eventually get your hands on a Sony x700 or Oppo.

Fortunately, the x700 is within an affordable price range for most people.

It would be nice to know why the slight difference in black level is occurring.
built_to_chill
Posts: 36
Joined: Thu Feb 20, 2020 4:45 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by built_to_chill »

While comparison of screen shots is helpful to rule out SL matching DL, it will take more than subjective comparison of a handful of frames to re-assure me SL is genuine DV.

While DV truly started to shine for me post OLED calibration (I cant overstate what a difference that made and is why I’m following the developments in this thread) DV is, arguably, and in most cases, only an incremental improvement over HDR10. So unless one can be a 100% sure it’s the real article, I don’t see why you’d bother with all the inconvenience of remuxing etc. You might actually be making things worse than the HDR10. I appreciate some have said SL does look better to them, even if the colours are less accurate, in which case fair enough. But if I knew there was any risk the colours were less accurate, personally I’d prefer to stick with HDR10.

Anyhow a couple of questions occurred, and apologies if answered elsewhere:
- Does the Dolby labs tool (or any Dolby authorised software) allow conversion from DL to SL Dolby vision? It offer some re-assurance that it is technically possible, without needing to go back to the master.
- Are there any examples of the same material being “officially” authored in SL and DL, so it could be objectively determined whether the DL -> SL conversion produces what would have come out of the studio? Obviously these files exist somewhere - where a movie exist in DV on both a UHD and in iTunes. I just don’t know if such SL iTunes movie files ever fall off the back of a lorry allowing such a comparison.
LucasSimba
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Joined: Wed Mar 04, 2020 9:46 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by LucasSimba »

Just tested with Joker on a Sony 4K TV (XF9005). It works with Plex, but not with MX Player (only HDR was detected) and Sony's own player.

But for some reason, the image is really red/pink. Somebody has the same problem? (see De Niro's face)

Image

I used yusesope's tool to have single DV, then I used mp4muxer. It might be a Plex problem, but it would surprise me.
mattmarsden
Posts: 88
Joined: Mon Sep 03, 2018 10:36 am

Re: Dolby Vision now possible through MP4 Mux.

Post by mattmarsden »

Well I'm more positive about this method - I've used Cliffhanger DV as my test. I've got an LG C9 that can play both dual layer and the single layer files created by Yuescope and I have to say they both look identical. I use this title as the SL file created by DVDfab had obvious colour problems but the Yuescope version doesn't. Still need to do some more testing before I can say I'm perfectly happy. The Yuescope SL file played on the Sheild looks the same as played on the C9 so that again is quite positive. Its difficult to do comparisons between different devices as they can output significantly differently - the Oppo 203 uses the same SOC as the Sony X700 but looks quite different.
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