Dolby Vision now possible through MP4 Mux.

[agneva]

Hi,
someone has an idea, how can I extract:
-HEVC1 in 4K (Base layer)
-HEVC 2 in 1080p (DV EL)
from this mkv:

0.png (21.48 KiB) Viewed 19814 times

with gMKVExtract I get only one *.hevc file.

I need to create a mp4 for my LG TV:

1.png (21.23 KiB) Viewed 19814 times

[Roberespa]

My LG OLED55B6V TV, if it plays .ts video files with Dolby Vision.

Returning to my question. Is there a command to merge Hevc1 and hevc2 from the command prompt "cmd" and give me a .ts video file?

Explain how I can do it.
Please!

Thank you so much everyone.
Waiting for your reply.

all you need is here:

https://www.makemkv.com/forum/viewtopic ... 970#p96282
https://bintray.com/justdan96/tsMuxer/t ... htly#files
https://mrmc.tv/forum/viewtopic.php?f=1 ... &start=310

-Hi:

Finally, I have managed to make my television play Dolby Vision without being in .mp4, since it can be done in .ts or .m2ts the quality is much higher than that of the "guaranteed" .mp4.

.mp4 offers colors that tend to green and dark and the feeling of brightness and people's faces is bad.
I do not like.

Conversely;
.ts or .m2ts
offers excellent results, more realistic colors and good gloss.

I am very happy to have made it.
When I have time I will make a comment indicating the steps to follow.
So people don't have to spend hours reading forum posts. And it doesn't work for them.

I'm very happy.

Now that I have it, I would like to.
That you answer me some questions to have the "Master" in Dolby Vision =)

As far as I know, the iso file
Dolby Vision has two video layers
a .hevc

and a second .hevc

I think the first hevc that has a very large size is 4K video with HDR10,
While layer 2 hevc
It is the video that contains Dolby Vision. It is right?

* Questions from newbies:

What do BL, Mel, FEL and RPU stand for? What are the differences between Mel and Fel?

What is the best profile for a UHD with Dolby Vison 5, 7, 8 or 8.1?

Thank you so much everyone.
Hope you can solve my rookie questions.

Thanks a million I'm very happy to have achieved it.
You are all wonderful.

I will be waiting for your answers.

Best regards.
-Rober.

[RESET_9999]

Hi,
someone has an idea, how can I extract:
-HEVC1 in 4K (Base layer)
-HEVC 2 in 1080p (DV EL)
from this mkv:

there is a demux bat here
https://www.makemkv.com/forum/viewtopic ... 970#p96282

[Wanderlust3K]

Yep yusepope is quite quiet.

Tested all Yusepope files (mp4) on a CX and only one would play and trigger DV, a FEL_To_81.mp4 (BL+RPU only), but it didnt look quite rigth.

is it true that BL+EL+RPU offer higher quality as opposed to just BL+RPU?
is it true that plain HDR+Dynamic Tonemaping = BL+RPU ?

Thanks and keep it up guys.

[quietvoid]

Yep yusepope is quite quiet.

Tested all Yusepope files (mp4) on a CX and only one would play and trigger DV, a FEL_To_81.mp4 (BL+RPU only), but it didnt look quite rigth.

is it true that BL+EL+RPU offer higher quality as opposed to just BL+RPU?
is it true that plain HDR+Dynamic Tonemaping = BL+RPU ?

Thanks and keep it up guys.

The CX is rumored to have lost dual track mp4 support.
There's little noticeable difference with a FEL, while MEL is the same as just the RPU.
LG's dynamic tonemapping is garbage (at least on the C8).

[pete19]

Interesting, thanks! do you have a link to that bluray.com list?

https://forum.blu-ray.com/showthread.php?t=276448

I can't remember, but I think MEL only ultimately "only" creates a 10 bit 420 image, compared to FEL which results in a 12bit 422 image, as MEL does not have the difference data in the EL, just the dynamic meta data.

the 10bit to 12bit difference is negligible, the 422 is what we want.

[Maikel777]

I also have a TV
LG OLED55B6V.

For the movie The Lord of the Rings.
Which Dolby Vision profile is best suited for my TV? 5, 7, 8 or 8.1

Thanks in advance.

[Roberespa]

I also have a TV
LG OLED55B6V.

For the movie The Lord of the Rings.
Which Dolby Vision profile is best suited for my TV? 5, 7, 8 or 8.1

Thanks in advance.

-Hello:

I have found this information:

Profile 5 single layer with exclusive support for Dolby Vision
Single layer 8.1 profile with HDR10 + Dolby Vision compatibility
Profile 8.2 single layer with SDR compatibility

From what i can read Profile 8.1 would be the best as it has HDR10 + Dolby Vision.

But I am a newbie at this.
If someone clears it up.

I would be very grateful, it is also of my interest since I have the same television.

[chros]

I can't remember, but I think MEL only ultimately "only" creates a 10 bit 420 image, compared to FEL which results in a 12bit 422 image, as MEL does not have the difference data in the EL, just the dynamic meta data.

the 10bit to 12bit difference is negligible, the 422 is what we want.

I don't remember the 422 part, can you link a doc that describe this?

[dcoke22]

I think that's a reference to Chroma subsampling.

https://en.wikipedia.org/wiki/Chroma_subsampling

https://www.rtings.com/tv/learn/chroma-subsampling

[RESET_9999]

This is my go to DV list for new UHD releases. Some very knowledgeable people discussing stuff too.

https://forum.blu-ray.com/showthread.php?t=276448

https://forum.blu-ray.com/showthread.php?t=276448

Thanks... so, there's a couple of movies that I thought were FEL.
I see that they realized that bdinfo is not accurate and updated the list for those 2mb/s MEL titles not a long time ago.

I wonder why studios decide to use them if they don't add anything but dynamic metadata.
Also, those 2mb/s MEL files muxed into a single-track profile 7 are not working on my Sony X700 while most of the FEL and all the small-sized MEL have no issue.
they all play fine in dual-track dual-layer file though.

[pete19]

a friend of mine(thank's manix) provided me two samples tone mapped to SDR from Dolby Vision made using a capture card (pro-res HQ) and the vertex 2 which allow the DV tone mapping.

could you explain your process in detail how the vertex 2 and capture card are being used to do get the screenshots ?

I'm assuming you're employing LLDV/player-led DV which the vertex then converts to SDR for the capture card to then grab a frame ?

which capture card are you using ?

Thx

[Manixx2020beyound]

It’s also possible to produce a HDR/rgb4816bit.png for comparison as well from a LLDV not converted to SDR. Comparison results are the same for sdr/hdr where the shield is concerned. (Ffmpeg to take screenshots)
Without the vertex 2 altering video playback
Once u have the HDR10/rgb48.png
U can view in your hdr/sdr software eg Madvr. In which u can now take another sdr.png if u so desire.

LLDV-Hdr.rgb.png example in mad vr

1AB62109-FE62-458B-8F23-3E636B5885C1.png (2.2 MiB) Viewed 19439 times

[RESET_9999]

a friend of mine(thank's manix) provided me two samples tone mapped to SDR from Dolby Vision made using a capture card (pro-res HQ) and the vertex 2 which allow the DV tone mapping.

could you explain your process in detail how the vertex 2 and capture card are being used to do get the screenshots ?

I'm assuming you're employing LLDV/player-led DV which the vertex then converts to SDR for the capture card to then grab a frame ?

which capture card are you using ?

Thx

@Manixx2020beyound did the capture.
He's using the Atomos Shogun with the pro-res HQ 422 PQ codec. The Hdfury Vertex 2 was used to force LLDV from the player because you need a decoded DV 422 signal to be able to capture it in PQ.
If your TV was receiving LLDV by default, then it could be done without the Vertex. Also, any capture card that supports pro-res HQ or any PQ codec can capture a LLDV signal in PQ.

So in fact, those comparisons had double tone mapping: Tone mapped / Captured to HDR10 PQ, then tone mapped to SDR with madVR using exactly the same setting. 1 or 2 tone mapping doesn't change the result, the red push is still here on the Shield no matter how many times we tone map it. We did the comparison in SDR because we can see more of the red push this way.
Plus even if we can't capture the default RGB DV signal, we all know the red push issue affects both DV modes. I can clearly see the issue on my RGB DV setup.
I hope you understand what I'm trying to say, my English is not so great.

FYI here's the PQ comparison:
RGB 16 bit PQ (straight lossless PQ png from the capture card):
https://screenshotcomparison.com/comparison/8996
https://slow.pics/c/iMHMpi2T


lossless RGB 16 bit PQ png:
https://mega.nz/file/HOI23ToA#VzdEzYByu ... CEAsDO2-b4
https://mega.nz/file/rCZQlZza#Kvbp0XTsk ... fqMFFvzDyc

***these png can be viewed in HDR10 passthrough if you open them in MPC-HC / MPC-BE + madVR
if you want to take a look at the pro-res MOV (14gb for 3min), I can give you a private link by PM.

[Roberespa]

* Tutorial on how to convert an .iso movie with HDR10 and Dolby Vision to .m2ts *

* This tutorial is primarily intended for all novice users who don't want to read all these forum pages. you will get a good result. Without having to do a lot of tests and trials until you get it. *

(This is something that I miss a lot, that from minute one you start reading this new and very tedious thing. So now that I know how to do it; so that you don't spend hours and hours I have decided to do my personal tutorial with the aim of help them.)

The first thing you need is to have all these programs updated in their latest version, otherwise it will not work !:

MakeMKV
tsMuxeR:
on page 259 the user "RESET_9999" offers us the link to the latest versions of tsMuxeR.
ffmpeg
Unzip this program to C: \ and rename the folder (call it) ffmpeg | In Windows environment variables (you can search for it in search box) open it
Give Environment Variables, double click on Patch, click again and type the path C: \ ffmpeg \ bin OK, OK and OK. This tells the CMD that you know the ffmpeg commands for easier access.

Once these programs are installed or updated:

1º Use MakeMKV open the UHD iso with Dolby Vision and extract the video track. (Check only the video track, uncheck all other audio subtitles, etc.) In short uncheck everything so that you only save the video track.
2º Open the "cmd" (Command Prompt) as administrator and write> ffmpeg -i Rings.mkv -map 0: 0 -c copy T: \ BL_EL_RPU.hevc * With this I manage to merge the 2 layers in a single file with the possibility to disjoin *
Rings.mkv is the name of the mkv that contains only the video obtained from the MakeMKV program, I write the correct name in my case, I change the name to make it easier for me. T: \ (I'm telling you to save the result in that directory.) BL_EL_RPU.hevc is the name that the final file should have.

3º Use tsMuxeR and open "BL_EL_RPU.hevc" To put the audios and subtitles that you mount in a virtual unit, the FULL-UHD Dolby Vision.iso adds 00073.m2ts unchecks the two video tracks (only adds the audio tracks and subtitles) or previously with tsMuxeR you make a DEMUX to simply add the audio tracks and subtitles to the "BL_EL_RPU.hevc" and give it to create a .ts or .m2ts video file (I recommend .m2ts because it is the purest).
and ready.

Step 1 creates a video file with HDR10 and Dolby Vison but most televisions do not open it, so you have to do step 2 and 3 that I mention.
I hope it will be very helpful to new users. I spent many hours reading and testing. It gave me a lot of mistakes. But with this method everything works perfectly.

You will get a .m2ts or .ts file with HDR10 and Dolby Vision valid for the vast majority of televisions.