I can't figure out how to set up Ocio on my system. Anyway, I'm having a few issues.

When I launch CinGG from the launcher on my desktop (with the environment variables set for 16-bit and lcms2), I get the following error message:

env: «$OCIO»: File or directory do not exist

If I start it from the terminal, even though errors related to $OCIO keep appearing, CinGG starts up normally (these are the errors mentioned in a previous email). This happens with both --with-opencolorio and --without-opencolorio, and in both X11 and Wayland.

Ocio doesn't work with the system's ffmpeg either:

ffmpeg -i /home/paz/aereo.mp4 \
   -c:v h264 -pix_fmt yuv420p10le -crf 18 -preset slow \
    -vf "ocio=input=ACEScg:output=ACEScct:format=rgb48,scale=in_color_matrix=sRGB:out_color_matrix=bt709,format=yuv444p10" \ aereo_ocio.mov

[...]
[AVFilterGraph @ 0x5609ab1d1780] No such filter: 'ocio'
Error opening output file  aereo_ocio.mov.
Error opening output files: Filter not found

But in this case, I think it’s because Arch doesn’t enable Ocio by default.


PS: While I was looking for information on how to configure OpenColoIO, I came across this site:
https://pypi.org/project/colour-science/
Could this be helpful? Unfortunately, it's only Python.

PS2: To test the x265 patches with Alpha, do I need to install all of them?