I use Linux for everything media production. I shoot RAW and process images with Darktable.
Now that I've started making videos too (4K ProRes), I need to apply a LUT to them in post. This requires importing a .cube file into Kdenlive. I know how to do that, but I don't know how to create a LUT.
Can I import a frame of video into Darktable, adjust the colors, and export a .cube file to import into Kdenlive to apply to the video?
Or are there other programs that will create a LUT on Linux? Can GIMP do it?
What Linux program can be used to create LUTs?