Dolby Vision now possible through MP4 Mux.

[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 25983 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.

[pete19]

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.

could you share the cmd to take a LLDV HDR screenshot via ffmpeg ?

[agneva]

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.

On my OLED77CX9LA i took dvdfap mp4 with DV SL -> perfect, because EL is empty.
I understood that you can every movie make a mp4 which has an empty EL (called MEL).

"Saving Private Ryan" doesn´t work correct with DV SL,the brightness pumps
I´ll try it this week on the UBK90 with DV DL
It has a FEL.

I don´t know a player how can play mkv with DV DL.

[pete19]

@jcdr428:

I used latest tsmuxer w64-nightly-2020-11-17--01-21-46 and muxed the first 3 mins of a UHD DV disc folder rip to a BMV folder and a m2ts file. Selected the BL + EL, Dolby Atmos audio and then muxed.

When playing back on LG CX via Oppo, DV and Dolby Atmos are triggered correctly on both muxed versions, but the muxed versions are always a little bit darker than the original disc.

Is this a known limitation or is there a setting that I'm missing ?

I took screenshot comparisons and also switched the order of the versions when played back to ensure it's not the LG dimming. Every time the muxed versions are a little bit darker.

Looking at mediainfo, the only difference I can see is in the HDR FORMAT tag of the EL of the m2ts mux:

original disc:
HDR format : SMPTE ST 2086, HDR10 compatible

muxed BDM folder
HDR format : SMPTE ST 2086, HDR10 compatible

muxed m2ts
HDR format : Dolby Vision, Version 1.0, dvhe.07.06, EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible

see screenshot comparison here: https://screenshotcomparison.com/comparison/8739

(ignore blown out highlights, this is a camera setting issue)


Thx

I just tested a full movie remux (not just a 3 mins trim) via tsmuxer of LOTR UHD HDR Disc 1, and there is no brightness change in full tv-led DV of these remuxes - so it seems the trim introduced the brightness loss.

[RESET_9999]

could you share the cmd to take a LLDV HDR screenshot via ffmpeg ?

by time in second:

Code: Select all

ffmpeg.exe -ss 3200 -i X:\video.mkv -vframes 1 X:\transfer=hdr.png

by frame number:

Code: Select all

ffmpeg.exe -i X:\video.mkv -vf select='eq(n\,6672)' -vframes 1 X:\transfer=hdr.png

[TickTock]

The subtitles going out of sync in Apocalypse Now Final Cut was caused by the file being damaged, eac3to log:

[v01] [0:28:24] The source file seems to be damaged (sync byte missing). <WARNING>
[a03] [0:28:23] The source file seems to be damaged (sync byte missing). <WARNING>
[a04] [0:28:24] The source file seems to be damaged (sync byte missing). <WARNING>
[s05] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[s06] [0:27:55] The source file seems to be damaged (sync byte missing). <WARNING>
[s07] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[s08] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[v01] [0:28:24] The source file seems to be damaged (discontinuity). <WARNING>
[a04] [0:28:24] The source file seems to be damaged (discontinuity). <WARNING>
[a03] [0:28:23] The source file seems to be damaged (discontinuity). <WARNING>
[a03] This track is not clean (2). <WARNING>
[a04] This track is not clean. <WARNING>
[s05] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[s07] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[s06] [0:27:55] The source file seems to be damaged (discontinuity). <WARNING>
[s08] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[a03] Audio has a gap of 3744ms at playtime 0:28:27. <WARNING>
[a03] The audio gaps/overlaps can't be removed from the TrueHD bitstream. <WARNING>
[a03] In order to remove them you'll have to transcode to another format. <WARNING>
[a04] Audio has a gap of 3776ms at playtime 0:28:27. <WARNING>

I tested a new version and it played perfectly on the X700 with subtitles on.

[Psnjerry]

i use dvdfab to make the dolby vision movies and i heard that it produces a fake dolby vision

i have a sample i made and if someone can test it against the method everyone uses in this forum.

thats if you have back to the future part 1 lol

https://mega.nz/file/NYgknYSa#aiz7hO8WT ... rAas_crLgo