Dolby Vision now possible through MP4 Mux.

[skull88]

Thanks for clarifying and confirming for Dune, RESET. I should also add that in some cases, the highest peak brightness found is actually in the studio logos or some 1-2 second blinding shot, and that is probably why studios don't always set maxCLL to match the brightest single frame in the entire master encode, but rather use other judgement/decision process, as that would not be a good idea for tonemapping if majority of the film is WAY below those tiny outliers.

[LV8HD]

I see, thank you for the clarifications. Still, I don't understand how it is possible to change MDL or MaxCLL/FALL without re-encoding the video, but if it doesn't practically impact playback at all i think I'll get over this thought.

[quietvoid]

Still, I don't understand how it is possible to change MDL or MaxCLL/FALL without re-encoding the video, but if it doesn't practically impact playback at all i think I'll get over this thought.

It's just SEI in the bitstream.

There's been some other people asking me for a tool to do it, and I had started working on one long time ago (October 2022 from my git logs)
I just don't really care enough since it doesn't matter that much and I had other priorities.

[skull88]

Makes sense, I don't blame you either for leaving it in the past. Not to mention, a tool like that may have an unintended consequence of more "experts" and groups around the interwebz to modify retail values and spread misinformation about what they should or should not be.

[speeddemon]

please ask any further questions related to the dovi_scripts here: https://forum.doom9.org/showthread.php? ... ost1997616

thanks.

Is this still a thing?

[RESET_9999]

Is this still a thing?

of course

[sw5163]

Is there an easy ffmpeg command to convert an .mp4 with embedded DV (profile 5) to .mkv?

Looks like ffmpeg doesn't support dvh1 codec in mkv.
Try something like:

Code: Select all

ffmpeg -i dvh1.mp4 -c copy -vtag dvhe dvhe.mkv

I don't know if the mkv will play proper Dolby Vision though.

[MartyMcNuts]

Is there an easy ffmpeg command to convert an .mp4 with embedded DV (profile 5) to .mkv?

Looks like ffmpeg doesn't support dvh1 codec in mkv.
Try something like:

Code: Select all

ffmpeg -i dvh1.mp4 -c copy -vtag dvhe dvhe.mkv

I don't know if the mkv will play proper Dolby Vision though.

Try using mkvtoolnix

[Cannikin]

Try using mkvtoolnix

This worked! I didn't realize MKVToolNix could open files other than MKV, but sure enough it can!

[tjreis2]

Regarding the setup im using, do you think i need to change anything?

No , it sounds right but you should try DV MKV with kodi on your C2, it works great on my end (PGS and SRT).
https://kodi.wiki/view/HOW-TO:Install_Kodi_for_webOS

Hi again @RESET_9999!

I followed your advice and installed Kodi in the my C2 but im having some problems regarding the resolution and refresh rate options in the app..

In the display settings, only the 1920x1080p resolution is available, and in the whitelist options it only shows 1 available (1920x1080, 0Hz). When i playback some movies, i managed to get DV but the refresh rate doesnt switch, even though i turned on that setting in the player. Using the player info, i can see that it reads correctly the video stream (4k) but the screen information says 1080p and 60hz. It doesnt seem like an error because the movie is looking a bit blurry indeed..

Are you able to get 4k resolution and 24hz refresh rate in your setup?

[RESET_9999]

Hi again @RESET_9999!

I followed your advice and installed Kodi in the my C2 but im having some problems regarding the resolution and refresh rate options in the app..

In the display settings, only the 1920x1080p resolution is available, and in the whitelist options it only shows 1 available (1920x1080, 0Hz). When i playback some movies, i managed to get DV but the refresh rate doesnt switch, even though i turned on that setting in the player. Using the player info, i can see that it reads correctly the video stream (4k) but the screen information says 1080p and 60hz. It doesnt seem like an error because the movie is looking a bit blurry indeed..

no idea

Are you able to get 4k resolution and 24hz refresh rate in your setup?

yes

[tjreis2]

Can you tell me what is the version of kodi that you installed, and if it was via webos dev manager?

I also have my lg c2 connected to an avr and i think it might be something related to its connection..

[RESET_9999]

21.0.3beta

was via webos dev manager?

yes, im connected to an AVR too via ARC

[LV8HD]

What are those L6 values? (The movie in question is Cars 3):

Code: Select all

Summary:
  Frames: 147321
  Profile: 8
  DM version: 1 (CM v2.9)
  Scene/shot count: 1630
  RPU mastering display: 0.0020/1000 nits
  RPU content light level (L1): MaxCLL: 10000.00 nits, MaxFALL: 892.53 nits
  L6 metadata
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 1000 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 372 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 347 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 471 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 592 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 532 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 835 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 767 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 179 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 709 nits, MaxFALL: 121 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 598 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 561 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 606 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 467 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 983 nits
    Mastering display: 0.0020/1000 nits. MaxCLL: 1000 nits, MaxFALL: 400 nits
  L2 trims: 1000 nits, 100 nits, 600 nits
  L5: Left=0, Right=0, Top=276, Bottom=276

[gm23o]

Hi,

I'm experiencing raised blacks in DV with some movies.
I'm using an Oppo clone connected to a Nexigo Aurora Pro UST projector.

Full Disc Rip - BDMV

I've noticed this recently when watching :
- Mission Impossible : Dead Reckoning
- True Romance

The letterbox bars and opening credits etc are very raised to a medium grey.

When I switch from TV led to Player led it improves.

Any ideas?