I have an OM-1 camera, and took a video with a flat profile. I have the 3D LUT files for my camera, that I downloaded from the company site.
When I try to load the .cube file with avidemux via
Filters > Colors > 3D Lut > Load Cube
I get an error:
Load failed: invalid file.
This is the format of the .cube file:
LUT_3D_SIZE 33
0.000000 0.000000 0.000000
0.053071 0.002243 0.002777
0.111055 0.005081 0.006271
0.150546 0.007065 0.008820
0.197253 0.008896 0.011322
0.240299 0.010163 0.013214
...
I am able to apply this .cube file with ffmpeg with this command:
ffmpeg -i <inputfile.mov> -vf lut3d='OMSYSTEM_OM-Log400_BT2020_to_WDR_BT709_v10.cube' <outputfile.mp4>
getting a beautiful video file.
What am I doing wrong?
Sorry if this was asked before, but I was unable to find the answer.
The issue caused by the cube file containing DOS/Windows newlines. This case should be already handled, but something is obviously wrong. Until it gets fixed in Avidemux, you can temporarily create a working cube file with
cat your-3dlut-file.cube | tr -d '\015' > temp.cube(this converts all DOS/Windows newlines to Unix newlines)
A new appImage containing the code change by szlldm that allows 3D LUT video filter in Avidemux to handle .cube files with DOS line endings is available on the server.