On Sat, May 9, 2026 at 10:43 AM Andrea paz <gamberucci.andrea@gmail.com> wrote:
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.
probably something with env variable handling in DE ? did you tried to put ocio filter config string into our ffmpeg/plugin.opts ?
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?
At least that was now I tested them .. 0001-Switch-to-x265-4.2-enable-alpha-support.patch 0003-Fix-h265_alpha-profile.patch 0002-Add-simple-hevc-alpha-encode-profile-with-hvc1-tag.patch 0004-Add-two-patches-for-decoding-hevc-alpha.patch hacking full night definitely have downsizes :) I typoed my profile patch for example and only noticed this after seding it! Thanks for faithful testing all those parches!