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RESET_9999 wrote: Thu Dec 26, 2024 4:26 pm Yes, it will be an L1 plot.
The only way to get an HDR plot is with a base-layer video input. An RPU is just metadata, the script can only plot them.

darrrkmanxxx wrote: Fri Dec 27, 2024 11:00 am Is there a way to adjust cmv4.0 in the RPU to better match peak brightness of a TV panel?

deadchip12 wrote: Fri Dec 27, 2024 12:16 pm When we use workflow 7-2 to generate screenshots of web and bluray versions and compare their brightness, do we need to view the screenshots on an hdr screen, or sdr should suffice?

RESET_9999 wrote: Fri Dec 27, 2024 2:11 pm

darrrkmanxxx wrote: Fri Dec 27, 2024 11:00 am Is there a way to adjust cmv4.0 in the RPU to better match peak brightness of a TV panel?

the rpu metadata are here to tell your TV about the content brightness. Your TV won't tone map it accurately if you lie about it.

You can only control the aggressiveness of the tone mapping with the analysis tunings. Lower L1 values mean less tone mapping resulting in a brighter image but potentially clipped.
Higher values mean more tone mapping resulting in a darker image without clipping in highlights. L1 Values under your TV internal brightness target (in tv-led) or the edid target (in LLDV), disable the TV tone mapping, and the content is displayed as it is, as intended...

I did a complete analysis tunings comparisons here: https://slow.pics/c/OA0pupEN
old cmv4.0 legacy, match almost 1:1 the peaks of workflow 6-2 (madvr plot)

Mastering display luminance              : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level              : 3938 cd/m2
Maximum Frame-Average Light Level        : 676 cd/m2

{
    "cm_version": "V40",
    "length": 10,
    "level6": {
        "max_display_mastering_luminance": 4000,
        "min_display_mastering_luminance": 50,
        "max_content_light_level": 3938,
        "max_frame_average_light_level": 676
    }
}

Thanks for explaining. How to interpret those? Is the madvr plot the best, because it has the most dynamics?
If I do the madvr measuremnt, I adjust cmv4.0 when I generate from madvr file with dovi_tool ,e.g.

It this correct or is there something else to adjust?
Soemtimes Maximum Content Light Level, Maximum Frame-Average Light Level are missing, what should I enter then?

RESET_9999 wrote: Fri Dec 27, 2024 2:59 pm

Thanks for explaining. How to interpret those? Is the madvr plot the best, because it has the most dynamics?
If I do the madvr measuremnt, I adjust cmv4.0 when I generate from madvr file with dovi_tool ,e.g.

No, madvr generated metadata (3-2) is the worst and not really suited for DV playback. Also, Madvr scene cut detection is not very good. It's quite sensitive to flashes/explosions/fast movement and can sometimes miss obvious scene cuts. The best dv metadata generation is one of the analysis tunings using Davinci Resolve. I prefer the ''balanced tuning'' which is the dovi_scripts default in workflow 3-1

It this correct or is there something else to adjust?
Soemtimes Maximum Content Light Level, Maximum Frame-Average Light Level are missing, what should I enter then?

it doesn't matter, Level 6 metadata are 100% useless.

RESET_9999 wrote: Sat Dec 28, 2024 1:27 pm the p8 hybrid tuto doesnt really need to be updated... Nothing changed...
A couple of things were automated in the transfer cmv4.0 workflow so that's why I redid this one.