Dolby Vision now possible through MP4 Mux.

[DMDreview]

Try to download your edid with CRU:
https://www.monitortests.com/forum/Thre ... tility-CRU

That's so funny, I just finished doing that but didn't find anything useful related to DV or HDR... I think it seems CRU depends on the GPU on the laptop (MacBook Pro 2018 i7, Intel Iris Plus Graphics 655) or the USB-C to HDMI Anker adapter , but unsure ! Grrr can't attach .txt ... or is it a quota issue.

Here's a LINK to that text file decoded from the site that @DMDreview shared.

What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.

[aboulfad]

What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.

That is what I exported from CRU & decoded by that site, idk what you mean by original file unless the .bin file which is also 128bytes.

[DMDreview]

What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.

That is what I exported from CRU & decoded by that site, idk what you mean by original file unless the .bin file which is also 128bytes.

full edid BIN =256 bytes. You need read full EDID with extended data

[RESET_9999]

yes, I just tested with my C2 and if the display connected to the PC is not a certified DV monitor, the DV bloc is missing from CRU edid. A TV is not a certified DV monitor.

[aboulfad]

^^^ Understood, though CRU has these following limitations & my MBP 2018 has most likely a dum & unsupported GPU. Oh RESET just discovered the mystery

Extension blocks:
GPU-specific limtations:
CRU can read extension blocks from displays connected to AMD and NVIDIA GPUs.
CRU can't read extension blocks with Intel GPUs or switchable graphics.
Older drivers or GPUs may only support up to 3 extension blocks.

[susanstone2022]

^^^ Understood, though CRU has these following limitations & my MBP 2018 has most likely a dum & unsupported GPU. Oh RESET just discovered the mystery

No need to worry about your TV edid. LG OLED65E7P is about ~700nits.

[aboulfad]

No need to worry about your TV edid. LG OLED65E7P is about ~700nits.

Thank you, I knew that from other users DV calibration files, was just curious how to retrieve EDID without vertex HW.

[speeddemon]

Would this be able to play MKVs on my C9 that are Profile 7 FEL?

Yes, I guess the ST P7 MKV would work on the C9 kodi app. Let us know if you try.

I'll test this week and let you know. It would be amazing if it also can do lossless audio (I doubt it though based on others' experiences so far).

[aboulfad]

Try to download your edid with CRU...

I really feel silly , I had my rpi4 connected to my LGTV all the time & w a super simple command tvservice -d, you can dump EDID (256b) & decode it with edid-decode (on rpi5/bookworm its different)

The decoded file has interesting data but surprised by the last video block, which brings me to my Q: in the past week's discussion there was reference to a "1000nits or 2000nits ... edid", is this entry below related to what you were referring to ? Obviously this TV can't be that low so odd.

Target Max Luminance: 350 cd/m^2
Target Min Luminance: 0.00099200 cd/m^2

[RESET_9999]

damn that's very low indeed and looks odd. If its really the 2017 LG tv edid, DV must look VERY dark compared to HDR10 on this TV.

discussion there was reference to a "1000nits or 2000nits ... edid", is this entry below related to what you were referring to ?

I've tested as low as 374nits:
https://www.youtube.com/watch?v=29ed65Aq5K0
https://docs.google.com/spreadsheets/d/ ... 1222148710

[AndreasT]

Hello, I stumbled upon issue, maybe someone here might be able to help me.

I want to convert 4K DV+HDR10 MKV into lower bitrate MP4 to play DV on my LG Plex.

Normally, when I only want to change the container from MKV to MP4 I just use

Code: Select all

ffmpeg.exe -i "source.mkv" -map 0 -c copy -c:s mov_text -strict unofficial "output.mp4" 

and all is nice and dandy. It triggers DV on my LG, but preservers the HDR10 metadata also, so all is OKay.

When I want to convert video stream I use:

Code: Select all

ffmpeg.exe -i "source.mkv" -map 0 -c copy -c:0 hevc_nvenc -cq 32 -preset p5 -c:s mov_text -strict unofficial "output.mp4" 

and it also copy all DV/HDR metadata, it even triggers Dolby Vision playback on TV (DV logo appears in the top right) but brightness is like in SD material. MediaInfoGUI claims all is okay. I lose HDR10+ but I do not care for that.

First is original MKV file:

converted MP4:


Any ideas whit it triggers DV but plays in low brightness?

I'm just curious, why do you want to convert to lower bit-rate?

[JCLG8]

Hi, I recently bought a Sony X700. I am testing it with some of the test files particularly the eagle beak file and I am not sure if it's in LLDV or TV-LED. When it shows the chroma weight there is no change from the original shown before.

[RESET_9999]

Hi, I recently bought a Sony X700. I am testing it with some of the test files particularly the eagle beak file and I am not sure if it's in LLDV or TV-LED. When it shows the chroma weight there is no change from the original shown before.

which TV ?
My LG C2 have a bug and Chroma weight is not working regardless of tv-led / player-led. It doesn't even work with the internal player.

[JCLG8]

Hi, I recently bought a Sony X700. I am testing it with some of the test files particularly the eagle beak file and I am not sure if it's in LLDV or TV-LED. When it shows the chroma weight there is no change from the original shown before.

which TV ?
My LG C2 have a bug and Chroma weight is not working regardless of tv-led / player-led. It doesn't even work with the internal player.

It is a Panasonic GX800, its a VA LCD from 2019.

[aboulfad]

damn that's very low indeed and looks odd. If its really the 2017 LG tv edid, DV must look VERY dark compared to HDR10 on this TV...

I tried my rpi5 too & it gave same results, I am gonna chuck it to maybe incorrect implementation in the rpi utilities or maybe the TV sends the wrong value ? The sure answer would be from Vertex 2.

Here's a snippet from a DV calibration file (from sonoftumble) for this generation that I used in the past, Tmax looks normal for this TV (so does the rtings HDR plot from rtings tests).

# Dolby Vision User Display Configuration File
# Generated by 5.9.2.59 on 6/19/2019
# DM Version:
PictureMode = 2
Tmax = 759.590301184834
Tmin = 1E-11