Dolby Vision now possible through MP4 Mux.

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Donpoku
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Re: Dolby Vision now possible through MP4 Mux.

Post by Donpoku »

RESET_9999 wrote: Thu Sep 05, 2024 3:19 pm The ones done in cmv2.9 without trims, yes I always generate new/better cmv4.0 metadata.
The world of encodes is fascinating indeed. According to this guy W4nk3r has little credibility.
https://docs.google.com/spreadsheets/u/ ... Q/htmlview#
Btw I agree with you and would welcome a list of current top ones apart from your 3 of course.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Yeah, I only list the ones that bake FEL or not and as far as I can tell, the w4nker release I checked looked like decent quality but I don't really care about encoders. I only care about releases that say REMUX.
According to this guy...
https://docs.google.com/spreadsheets/u/ ... Q/htmlview#
Anyway, I'm not sure about this guy's credibility. I do agree with some of his claims but there are no screenshot comparisons and he sounds like he's 12 years old.

Image
Sorry for my English.
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morbius
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Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

RESET_9999 wrote: Mon Sep 02, 2024 12:59 pm it fails when it tries to convert to prores. I don't know why it does that for you sorry.
turned out the issue was me relying on the there being an AviSynth folder in the tools.7z package, once I installed avisynthplus the HDR10 conversion to DV completed successfully, albeit it took a very long time on my Intel NUC8i7. At one point I noticed a warning about no CUDA device being available, I guess the conversion had to run without much in the way of hardware acceleration? Is there anything I can do with settings to improve that, or is it a limitation of my not running a full PC rig with an nVidia GPU?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Yeah, it's already very slow with a GPU, so I can't imagine how long it must be on a CPU. Your only other option is Resolve.
Sorry for my English.
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morbius
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Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

while it takes a while to convert an HDR10 source via the 3-1 workflow, the results from my first test seem well worth it. One point in this workflow that does not have an automatic option is the prompt for the Mastering Display choice. I'm using the values provided by MediaInfo, is that correct?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

I'm using the values provided by MediaInfo, is that correct?
yes
One point in this workflow that does not have an automatic option is the prompt for the Mastering Display choice
it's because I prefer selecting MDL based on the content's actual brightness.
Sorry for my English.
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Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

you've done amazing work with the toolset, I was happy to make a donation. I just watched my HDR10 copy of Inception after it had been processed via the 3-1 workflow, and found it to be transformed. I've been quite careful in my picture mode configuration on my main OLED display to configure the settings for HDR10 using a Spears and Munsil test pattern, but even with HDR10 dialled in using that test, the DV conversion was so much better.

Is it the case that even with MEL, the DV processing by the display affects how colours are rendered, it's not just about shot-by-shot contrast?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Yes, shot-by-shot metadata will have a bigger impact when the content is brighter than what your TV can do and Inception constantly peaks over 1000nits and it's quite a saturated color grade (too much in my taste).
When the colors are brighter than your TV capabilities, they can look slightly desaturated in HDR10. The generated metadata does not change the contrast and colors, they are just compressed better in DV because the TV knows the shot brightness in advance, it can compress the highlights and gamut much more accurately than a static tone mapping curve which is what you are noticing.

For content within your TV dynamic range, you wont see much difference with HDR10 (assuming your TV is correctly calibrated)

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deadchip12
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Re: Dolby Vision now possible through MP4 Mux.

Post by deadchip12 »

@RESET_9999

Any idea why I get this error when dragging HDR10 bluray version into 6-2? I'm trying to verify the HDR10 vs DV brightness of Kingdom of The Planet of The Apes 2024 before the transfer.

Image
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Sometimes madVR fails to read the file and it usually happens with TS/M2TS files. It can happen with mkv files but it's rare. I had no issue measuring my mkv remux though so there might be something going with your rip. Anyway, I already verified this movie: https://slow.pics/c/XaJrQYFA
Sorry for my English.
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deadchip12
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Re: Dolby Vision now possible through MP4 Mux.

Post by deadchip12 »

RESET_9999 wrote: Tue Sep 10, 2024 3:20 am so there might be something going with your rip. Anyway, I already verified this movie: https://slow.pics/c/XaJrQYFA
Should I still use that rip then?

Btw, I just plotted my DV web version and the brightness doesn't look similar to the hdr10 pic you posted at all:

Image
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

mine has both, brightness measurement and dv plot.
Sorry for my English.
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morbius
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Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

I've just acquired the Italian DV release of John Wick 2. I notice a few differences from my UK HDR10-only version
  • audio is only DTS-HD 5.1 instead of TrueHD Atmos
  • the frame rate is 24.0 fps vs 23.976fps
  • the ornate on-screen subtitles burned in to the HDR10 video are missing from the Italian release
Before I noticed the missing subtitles, I was able to build a remux with the TrueHD track by re-clocking the Italian video fps to 23.976 in mkvtoolnix and figuring out that a delay was required on the video due to there being an extra second of black screen at the start of the UK version. But then I noticed the missing subtitles, which feature heavily in the JW films.

So now I'm thinking about how I can transfer the DV layer from my 23.976 re-clocked Italian video to the corresponding video in the UK release. Is there a workflow that will do that? And is it possible to account for the UK version having a second or so more blank screen time at the start compared to the Italian release? Appreciate any advice.
deadchip12
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Re: Dolby Vision now possible through MP4 Mux.

Post by deadchip12 »

RESET_9999 wrote: Tue Sep 10, 2024 10:59 am mine has both, brightness measurement and dv plot.
What I meant was your HDR10 plot does not look similar to my DV plot

Your HDR10 plot
Image

My DV plot
Image
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Before I noticed the missing subtitles, I was able to build a remux with the TrueHD track by re-clocking the Italian video fps to 23.976 in mkvtoolnix
You have to change the EL framerate too and not just with the container using mkvtoolnix. You have to write a new bitstream framerate(9-2) for both layers and then build a new P7 ST-DL mkv (4-2).
But then I noticed the missing subtitles, which feature heavily in the JW films.
english subtitles for the Italian BD: https://drive.google.com/drive/folders/ ... drive_link
So now I'm thinking about how I can transfer the DV layer from my 23.976 re-clocked Italian video to the corresponding video in the UK release
No, you can't do that.
Sorry for my English.
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