Page 641 of 756
Re: Dolby Vision now possible through MP4 Mux.
Posted: Sat Jan 20, 2024 9:52 pm
by RESET_9999
No idea. Do you see raised or crushed black?
you can use this pure black test file:
https://drive.google.com/file/d/1EoqK5- ... drive_link
and this black clipping pattern for crushed black:
https://drive.google.com/file/d/1PWdxtV ... drive_link
Re: Dolby Vision now possible through MP4 Mux.
Posted: Sun Jan 21, 2024 12:57 am
by JCLG8
I will definitely check those out. I was testing the eagle beak L1 L2 test file both in DV and HDR10 and I noticed that when looking at an angle where more artifacts are visible, on a dark spot there was a bigger black area on the DV viewing than on the HDR viewing. Not big, only a little bigger and probably not even noticable when you watch normally.
And in a movie I was testing in a couple scenes some shadows just seemed a little tinted and not completely dark but it could have just been how those shadows are and it was normal, it could just be me. Also in one of those shots I saw anothing similar thing like the beak video, when looked at from an angle, on a shadow there was a slightly bigger black area with DV on than with HDR10.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Sun Jan 21, 2024 10:59 pm
by Epedemic
Thank you for this masterpiece

It helped me a lot with my current headache:
I decided to switch out my Shield Pro with a CCwGTV, as i have grown annoyed with the red push on the Shield (and lack of FEL support), and needed a gf-friendly way to watch as much content as possible while playing it in as good quality as possible. (I have an X700 for TrueHD Atmos & DTS-X stuff)
I have come to the conclusion to use the Monsoon Kodi build, which seems to correctly play everything i throw at it (Including FEL, as verified by this test file), and passes through 5.1 channel DTS-HD/Atmos to lossless LPCM. Plex also kinda works, but is finicky, and i really prefer any kodi build over plex. All official Kodi versions & the Maven Kodinerds builds does not play FEL at all.
Am i on to something here, or is it just another red herring in a long line of such?

Re: Dolby Vision now possible through MP4 Mux.
Posted: Mon Jan 22, 2024 12:27 am
by RESET_9999
yes the GTV Chromecast works very well for FEL P7 MKV rip as long as you don't try to resume or FF/RW. This is my experience with PLEX and I don't know about Kodi.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 4:06 pm
by JCLG8
If I have an ST-DL file and it plays on the X700 is there a reason to convert it to DT-DL?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:12 pm
by tjreis2
Hello @RESET_9999
My setup is the same as yours (x800m2 direct to the C2) but I am facing quite a strange scenario with two different DV movies.
Yesterday i was watching the new Wonka movie in the internal player of the C2 because the movie is cropped (3840x1604). Imediately i noticed that the movie was dimmer than normal levels. When i opened the same file in the x800m2, i noticed it was playing with a brighter image, albeit with grey bars.
Today i re-tested with a non cropped file (Aquaman 2) in both the C2 internal player and the x800m2 and now the brightness levels were the same in both players!
I have a shield pro, should i use that to see cropped content instead of the internal player?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:19 pm
by RESET_9999
I would guess it's because CMV4.0 and this is why I always remove it. The L2 trims in Wonka is a global positive lift which is ignored by cmv4.0 devices.
In Aquaman, the L2 trims are not a positive lift. Try to remove CMV4.0 in wonka and I bet the brightness will match the x800m2.
Slope - Offset value over 2048 = positive lift
Power value under 2048 = positive lift
JCLG8 wrote: Tue Jan 23, 2024 4:06 pm
If I have an ST-DL file and it plays on the X700 is there a reason to convert it to DT-DL?
nop
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:33 pm
by tjreis2
RESET_9999 wrote: Tue Jan 23, 2024 5:19 pm
I would guess it's because CMV4.0 and this is why I always remove it. The L2 trims in Wonka is a global positive lift which is ignored by cmv4.0 devices.
In Aquaman, the L2 trims are not a positive lift. Try to remove CMV4.0 in wonka and I bet the brightness will match the x800m2.
Slope - Offset value over 2048 = positive lift
Power value under 2048 = positive lift
Thank you! What is the workflow to convert to ts and remove the CMV4.0?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:34 pm
by RESET_9999
2-1-5 in the latest version
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:42 pm
by tjreis2
RESET_9999 wrote: Tue Jan 23, 2024 5:34 pm
2-1-5 in the latest version
Thank you! If i played the file in the Shield, would it still have the same problem? As it is a CMV4.0 device
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 5:49 pm
by RESET_9999
Shield is a cmv4.0 device, yes i guess so.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 8:11 pm
by JCLG8
RESET_9999 wrote: Tue Jan 23, 2024 5:19 pm
I would guess it's because CMV4.0 and this is why I always remove it. The L2 trims in Wonka is a global positive lift which is ignored by cmv4.0 devices.
In Aquaman, the L2 trims are not a positive lift. Try to remove CMV4.0 in wonka and I bet the brightness will match the x800m2.
Slope - Offset value over 2048 = positive lift
Power value under 2048 = positive lift
JCLG8 wrote: Tue Jan 23, 2024 4:06 pm
If I have an ST-DL file and it plays on the X700 is there a reason to convert it to DT-DL?
nop
Alright thanks, btw a few days ago I tried a file you recommended for testing black crush, the bars that flash are basically not visible at all when using dolby vision with local dimming at minimum, and a little visible with local dimming off. With HDR10 its completely visible even with local dimming.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 9:20 pm
by tjreis2
RESET_9999 wrote: Tue Jan 23, 2024 5:49 pm
Shield is a cmv4.0 device, yes i guess so.
Thank You! I have been following your work and the discussions associated with DV for quite some time in this forum, but everytime i think i undertstand the correct setup, there is some new discussion that throws me out of the loop!
If i understand correctly, all CMV 4.0 movies are better being converted to CMV2.9, despite of player (internal vs x800m2 vs shield) correct? The same applies to cropped vs non cropped movies?
The setup i was using is:
If movie is DV P7 FEL and Lossless - Workflow 4-3 and play on x800m2
If movie is DV P8 (non cropped) and lossy - tsmuxer and play on x800m2
If movie is DV P8 (cropped) and lossy - tsmuxer and play on C2 internal player.
Should I add a verification step (Workflow 2-3) to see if the movie is CMV4.0 and convert to CMV2.9? Or should i do this all the time? Furthermore, do I need to do something else in case of DV P8 (cropped) movies, to be played in the internal player, like editing L5?
Thank you so much once again, and sorry for all the questions, just trying to be sure what are the correct steps and players to use!
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 23, 2024 9:35 pm
by RESET_9999
You can set the script(line 99) to always remove cmv4.0 regardless of the workflow you use.
PS: I just asked Dolby and sent them a bunch of test files about CMV4.0 missing level 8 and L2 trim offset ignored in tv-led.
Let see what they say.
do I need to do something else in case of DV P8 (cropped) movies, to be played in the internal player, like editing L5?
cropped content from apple are missing L5 but it doesn't seem to cause any issue so you can leave it untouched or edit to 0
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed Jan 24, 2024 5:09 pm
by tjreis2
RESET_9999 wrote: Tue Jan 23, 2024 9:35 pm
PS: I just asked Dolby and sent them a bunch of test files about CMV4.0 missing level 8 and L2 trim offset ignored in tv-led.
Let see what they say.
Thank You! Its super weird that something like this escapes in testing. Is there actually any way to correctly play CMV4.0 files? The internal player is CMV4.0 and the image was much darker, i doubt that was the intended mastering they wanted..
Regarding the setup im using, do you think i need to change anything?