Dolby Vision

[perukawn]

Hi guys,

First of all, thanks for all the tips, now I can watch evertything as dolby vision... Worked perfectly.

I don't know if you've tried, but my OLED C9 wasn't able to play very well a file with 59.94fps.

Anyone tried 59.94fps file?

Thanks!

[perukawn]

Hi guys,

First of all, thanks for all the tips, now I can watch evertything as dolby vision... Worked perfectly.

I don't know if you've tried, but my OLED C9 wasn't able to play very well a file with 59.94fps.

Anyone tried 59.94fps file?

Thanks!

Just adding some information, the mkv run normaly but when I convert to mp4 muxing with dolby vision, the tv starts to freeze, the tv just cant handle it, on pc run normaly.

Is there any extra parameter? I just doing this

mp4muxer_64bits --dv-profile 7 -i H:\MOV.hevc -i H:\DV.hevc -i h:\audio.ac3 -o d:\Output.mp4

Any sugestion?

[KingCarstonoX]

Short for info. With the new Shield (2019 Pro) and the Plex Beta, the single layer DV MP4s are played. TrueHD not yet. Yesterday I was able to test DTS HD successfully for the method here.

How, please elaborate with links:)

4K "Single Layer Dolby Vision" with DTS-HD Master and Chapters
https://drive.google.com/file/d/1DcGZur ... drive_open

4K "Single Layer Dolby Vision" with AC3 and MLPA (TrueHD) and Chapters
https://drive.google.com/file/d/1M8DC2N ... drive_open

4K "Single Layer Dolby Vision" with AC3 and EAC3 inkl. Atmos and Chapters
https://drive.google.com/file/d/1F6eNpU ... drive_open

Except for the MLPA track, everything can be played with Plex on Shield 2019. Emby has meanwhile also migrated SL DV, but still no DD+ or HD sound.

The news that DVDFab only creates a fake single layer is of course not so nice. You can save yourself the effort and just create an MKV without all the magics. (thx @wesk05 for the information)

Is there really only DVDFab for creating single layer rips?

[ameibein]

Hi guys,

First of all, thanks for all the tips, now I can watch evertything as dolby vision... Worked perfectly.

I don't know if you've tried, but my OLED C9 wasn't able to play very well a file with 59.94fps.

Anyone tried 59.94fps file?

Thanks!

I have a C8, and its got a bit of a quirk with playing large files which i found a work around, its kind of ridiculous but may work for you too and allowed me to play 60fps Gemini Man with no issues

All my movies are on a standard non SSD external hdd which may be part of the problem.

When i try playing any remux via the TV's internal app its stutters terribly to the point it hardly plays at all, but if i cancel and try again after 30 seconds or so, its a bit better. after another minuite or so i try again and it plays flawlessly.

Give it a try and see how it goes for you.

EDIT

I got a USB 3 HDD caddy for an old 2.5” laptop hdd I had and all the stuttering has disappeared

[KingCarstonoX]

Worst case - it's just HDR10 flagged just enough to trigger a DV logo?
Better case - it's HDR10 + useful DV RPUs that trigger DV and improve tone mapping on DV displays?
I'm going to guess it does nothing with a Full Extension Layer to take it to 12 bit from 10...

According to the statement here from wesk05 about DVDFab single layer, a Plex Forum member (TobyX) and I discussed a lot about the topic. We have come to the conclusion that words do not help much but we have to check it ourselves. I read a lot of Dolby documents to understand how DV works...

First of all - wesk05 is right that the monkey does not create a single layer according to Dolby's specifications. A single layer must already have the 12bit and the ITP 420 color space in the source file. This is not the case with a UHD disk, since only the mix of both layers can result in this. This is because the disc must be backwards compatible to hdr10.

At first I thought that it doesn't matter, since the output to the TV is always 10bit / YUV 420 and there are currently no 12-bit commercial screens out there. But more about that in a moment...

So the question arises what the monkey is doing there!? I thought if the picture on the TV looks like the original DV, I don't care what the source is or what DVDFab does. My first short ugly tests confirm that SL looks like DL but not like HDR10:

(dv demo disc 2018 - black demonstration)

You can see that the point is much too bright with HDR10 and the screen is not darkened as with DV. With DV, the display is off except for the small area. So the black demo doesn’t really work with HDR10. You can see the difference with the eye and the camera. In my opinion you can see there that the metadata for HDR10 is “static” because the brightness has been completely set for the video and the spot is too bright. The TV is on the DV standard picture profile without any changes. The same with the HDR mode … standard without changes. Local dimming is set to Medium in the standard profiles.

But since I can't take good pictures with my bad smartphone camera, I asked Toby. He has the appropriate equipment. He took some pictures with the same settings and the same conditions. The short answer is: Yes it is different! Here is the thread with the better comparisons: https://forums.plex.tv/t/some-thoughts- ... ols/536340

If you look at the pictures, you can see that there are small color differences from the original. I think the missing color depth or primaries will be the problem. The Dolby Vision composer and display manager obviously makes a better colored picture from the 12-bit source of the EL even if the screen always gets 10 bit YUV 420.

I'm not sure about metadata. If these were really static, you would not see any differences to HDR10. That's not the case. So it is not an HDR10, which only triggers the DV logo on the TV. It is the 10bit baselayer which is expanded with useful dv data substream and thus comes very close to the original. In principle, DVDFab doesn't state anything else. BL+PRU = "single layer". I think it’s kind of a HDR10 and DV mix. DVDFab will extract the RPU substream metadata and discard the expanded color. Then he adds the metadata to the first 10bit HEVC layer and replaces or overwrites the static data. The differences to HDR10 could not be explained otherwise!?

So...
Is it like the original DV = no
Is it HDR10 with only DV logo = no
Is it better like HDR10 = yes

What the monkey does is the only way to create later a SL from a DL or a UHD disc. There is no other way as it is actually not possible to do this. So if you are dependent on single layer DV, you have an option to create a very similar experience afterwards, but you have to accept drawbacks in the color.

Thank you TobyX for your work and the effort involved!!! I think we have now largely closed the case...!?

greetings
KCX

[DaMacFunkin]

Well done men
So in real world viewing you would have to be ‘scrutinising’ for the difference between the single layer stream and the dual, but the difference between single layer and standard hdr10 is totally noticeable.
Sort of what I was saying in other threads.

[jaanus]

Hi
Could anyone please upload DUAL LAYER Dolby Vision .mp4 samples ?
Even better if both FEL and MEL versions with Atmos.
Seems that all links mentioned in this forum are dead. Unfortunately I don't have any UHD disks and can't mux them by myself.
I'd like to test my Philips 854 series TV.

BR,
J.

[ameibein]

Interesting stuff KCX.. thanks for keeping up updated with the findings!

[Grencola]

Hey @davilla long time no talk!

@Grencola
I too posted about MrMC, got a trout in the face back. I can only assume they don't care...

The thing about reverse engineering sw is knowing something can be done. That's 50 percent of the effort. Knowing that double to single Dolby Vision is possible, it makes reverse engineering what DVDFab does much easier. For a sw wizard like me that is The other bits in the equation is libx265 can also do some level of dolby vision manipulation. I would not be surprised that DVDFab is doing something similar to what libx265 is doing.

The first steps are to compare the original stream(s) with the converted and see what's been changed. Have to do this at the NAL level with custom probing sw. Maybe a week or so of effort. After 3.9 goes out, that's where my focus is now.

not sure if you ever bothered perusing this or not, but our friendly neighbourhood wizard man @Yusesope basically did just that, and a perfect recreation of what dvdfab does is now possible, see here:

https://www.makemkv.com/forum/viewtopic ... 425#p85573

If you read through and catch yourself up a bit, you'll see full lossless dv + atmos playback is now possible and has been tested on the x700, the nvidia shield 2019, and firestick 4k (dv + lpcm 7.1). Also, most importantly, the colors are now correctly matching the discs! I haven't tried mrmc just yet, but there are endless samples available in the linked post you can test

[animeking]

Can MrMC for ATV 4K play the following file? I'm having issues playing it. The file just gets highlighted blue and nothing happens.

Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp42/iso6/isom/msdh/dby1)
File size : 4.59 GiB
Duration : 38 min 46 s
Overall bit rate : 16.9 Mb/s
Encoded date : UTC 2020-04-05 10:16:16
Tagged date : UTC 2020-04-05 10:16:16

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5@High
HDR format : Dolby Vision, Version 1.0, dvhe.05.06, BL+RPU
Codec ID : dvhe
Codec ID/Info : High Efficiency Video Coding with Dolby Vision
Duration : 38 min 46 s
Bit rate : 16.2 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.081
Stream size : 4.38 GiB (95%)
Default : Yes
Alternate group : 1
Encoded date : UTC 2020-04-05 10:16:16
Tagged date : UTC 2020-04-05 10:16:16
Color range : Full
Codec configuration box : hvcC+dvcC

Audio
ID : 2
Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
Codec ID : ec-3
Duration : 38 min 46 s
Bit rate mode : Constant
Bit rate : 768 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 213 MiB (5%)
Language : English
Service kind : Complete Main
Default : Yes
Alternate group : 2
Encoded date : UTC 2020-04-05 10:16:16
Tagged date : UTC 2020-04-05 10:16:16
Complexity index : 16
Number of dynamic objects : 15
Bed channel count : 1 channel
Bed channel configuration : LFE