Dolby Vision now possible through MP4 Mux.

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Trees
Posts: 50
Joined: Sat Sep 03, 2022 8:04 am

Re: Dolby Vision now possible through MP4 Mux.

Post by Trees »

Is it possible to compare tonemapped P5 screenshots with P8?

Reason I ask is because as of lately I'm seeing more and more "RGB 16-bit" screenshots floating around. Are these accurate representation of what P5 has to offer? I thought it was only possible to compare the two by taking pictures of the TV? If so, how are these RGB screenshots made?
RESET_9999
Posts: 2392
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

with libplacebo, nothing new...
workflow 7-2 in dovi_scripts
Sorry for my English.
G5 / AM6B+ / Denon 7.2.4
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Trees
Posts: 50
Joined: Sat Sep 03, 2022 8:04 am

Re: Dolby Vision now possible through MP4 Mux.

Post by Trees »

RESET_9999 wrote:
Tue Nov 11, 2025 12:22 am
with libplacebo, nothing new...
workflow 7-2 in dovi_scripts
Interesting.

Assuming HDR10 is HDR and Profile 5 DV is "expanded HDR" (effectively 12-bit colours because of how the master-to-P5 conversion works), are these tonemapped screenshots an acccurate representation of P5? Am I correct in thinking there's no point comparing them on a regular 8-bit, regular 10-bit screen (HDR) without the capability of "expanded HDR" (P5)? If you know what I mean?
RESET_9999
Posts: 2392
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

DV is HDR. HDR is a general term that encompasses all HDR formats: HDR10, Dolby Vision, HLG, and HDR10+.

There’s no visible difference unless the grading itself differs, or if the WEB-DL comes from Apple TV because Apple is stupid, applies the same color reshaping metadata to all content, which slightly distorts the colors. This issue has nothing to do with P5 using 10bit ICtCp that effectively equivalent to 11.5-bit YCbCr. When comparing P5 and HDR10 across Disney+, Amazon, Netflix, or MAX, they will always look identical, even when viewed in 16-bit RGB.

example, Frankenstein 2025: https://slow.pics/c/u84fKFsI

more examples here:
https://docs.google.com/spreadsheets/d/ ... 1226038728
Sorry for my English.
G5 / AM6B+ / Denon 7.2.4
DoVi_Scripts
DoVi Playback Devices
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