Dolby Vision now possible through MP4 Mux.

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skull88
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Re: Dolby Vision now possible through MP4 Mux.

Post by skull88 »

Some movies just compress very well, so I would guess it's fine. You could always run a 7-2 comparison with the script for your input vs. output encodes if you're unsure.
Iam2smart
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Joined: Sun Feb 13, 2022 6:56 am

Re: Dolby Vision now possible through MP4 Mux.

Post by Iam2smart »

skull88 wrote:
Sun Oct 13, 2024 12:44 am
Some movies just compress very well, so I would guess it's fine. You could always run a 7-2 comparison with the script for your input vs. output encodes if you're unsure.
Ok thanks Ill do that then.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

With CRF, the encoding quality is always the same regardless of the final bitrate/size. Some movies require more bitrate (grain, fullscreen, bright) and some others less( dark, digital, letterbox)
Sorry for my English.
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LV8HD
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Re: Dolby Vision now possible through MP4 Mux.

Post by LV8HD »

@RESET_9999 I was taking a look at your the grade/master doc to check whether the WEB RPU for the movie The Bourne Legacy was injectable or not.
L1 is fine, but it seems like PQ differs between sources. Wouldn't such RPU, if injected, change the original creator intent?

PQ: https://slow.pics/c/tyiJdlBW
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

thats apple stupid static color reshaping. All their DV contents have this difference: red always looks brighter/orangish. sometimes it's less apparent.
this static metadata is removed when you convert the rpu to P8. Apple has no respect to the creator's intent, I did a video about it on my youtube channel.
Never watch iTunes P5 web-dl if you care about accuracy, always convert it to P8.
Sorry for my English.
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ragico
Posts: 264
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Re: Dolby Vision now possible through MP4 Mux.

Post by ragico »

What is Dolby Vision 10.1 profile associated to AV1 codec? And who is using it?
Thank you.
LV8HD
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Re: Dolby Vision now possible through MP4 Mux.

Post by LV8HD »

Is it necessary to edit RPU mastering display metadata (not L6) when injecting, or is it better to leave it as it is?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

never modify the RPU mastering display value (source pq) because dolby calculate the average pq and trims metadata quite differently according to the selected MDL.
see: https://slow.pics/c/rMmXrGeH
Sorry for my English.
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kazuma
Posts: 186
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Re: Dolby Vision now possible through MP4 Mux.

Post by kazuma »

reset_9999, late night devil is one of the few cm 4.0 movies. how is the PQ performance on the ugoos? you said that the conversation was oversatured at te time.
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

first you should verify your RPU because if it was done with makemkv , it's probably wrong.
CMV4.0 works great on the ugoos and the problem with ''the conversation'' bluray is the VERY strong brightening trims that make the image brighter than the HDR master.
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 Oct 15, 2024 9:30 pm
first you should verify your RPU because if it was done with makemkv , it's probably wrong.
How do i verify my RPU?
Or should I just use yours?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

compare the video framecount with the RPU framecount
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:
Wed Oct 16, 2024 12:15 am
compare the video framecount with the RPU framecount
Sorry I'm quite confused about this new makemkv issue. Which video framecount are you talking about?
Say I want to inject DV from web version to bluray version and already generated RPUs of both using your dovi_script, which framecounts do I have to look at here?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

I'm talking about the original bluray folder that has authoring and muxing issues in MakeMKV like ''Late Night with the Devil''
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:
Wed Oct 16, 2024 10:53 am
I'm talking about the original bluray folder that has authoring and muxing issues in MakeMKV like ''Late Night with the Devil''
You mean ripping that movie from the bluray disc using makemkv creates issues?
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