On Mon, May 4, 2026 at 11:49 AM Andrea paz <gamberucci.andrea@gmail.com> wrote:
I tried compiling with lcms2 and running a few tests, but unfortunately I’ve reached the usual point where I get confused and don’t understand anything anymore. When I load the JPEGs or PNGs from “wide-gamut-tests,” the asset displays normally, but in the terminal I see these lines that I don’t know how to interpret.
file:/home/paz/wide-gamut-tests/P3-sRGB-color-ring.png err: Operation not permitted
file:/home/paz/wide-gamut-tests/R2020-P3-color-ring.png err: Operation not permitted
Not sure ... they only appear after my peaches? You can change loglevel to verbose in decode.opts in ffmpeg dubdir of your cingg installation structure and reload.
What does “unallowed operation” refer to?
What's even more confusing is that I get the same result whether I run cin with or without CIN_CM_PROFILE=... If I use your command line:
CIN_CM_PROFILE="/usr/share/color/icc/colord/WideGamutRGB.icc" /home/paz/cinelerra/cinelerra-5.1/bin/cin /home/paz/wide-gamuts-tests/*.jpg
Si avvia CinGG ma si apre una finestra di avvertimento con scritto:
int MWindow::load_filenames(ArrayList<char*>*, int, int, int): Failed to open /home/paz/wide-gamuts-tests/*.jpg
May be there was non-jpeg file? Can you double-check those opens normally in other programs? If you replace *.jpg with *.png does it behave any better (cingg may create a lot of video tracks in this case, one for each file) ?
In any case, I'm not quite sure what to do or what to look for. To verify that color management is enabled, should I see the horizontal stripes and the circle in the “color bars” and “color ring” images, or not?
In theory if all conditions meet (there is embedded profile, there is env. variable for output (to pipeline) icc profile, project set to rgba8) you can see "cms!" line printed to console. I used one of those redtruck_GBR.jpg tests wehere without color management sky and truck are inverted colors. Also jpg with green text "your browser or workflow does not claim any color management" replaced with white text about working color management in Firefox or patched cingg.
Basically, CinGG behaves like GIMP 3 when “color-managed display” is enabled. In CinGG, there’s a slight difference between the same PNG or JPEG image, whereas in GIMP I don’t see any difference. Krita is like GIMP. Kdenlive is similar to CinGG, but I’m not quite sure how it relates to “color-managed.” It displays a message saying it doesn’t support image profiles.
Note that I used TDE with no color management, on X server, obviously. If you have "simple" X session in your login manager you can retry here just for excluding Xwayland specific behavior for a moment.