Hello everyone! Ask the programmers to double-check the black level cut, it seems to me there is a small error that leads to purple artefacts in the video.
They are clearly visible if you transform the color according to the official matrix for D-cinelike
The D-Gamut RGB to ITU Rec. 709 RGB conversion matrix is shown below.
1.6746 -0.5797 -0.0949
-0.0981 1.3340 -0.2359
-0.0410 -0.2430 1.2840

Hello there Nathan Acre. I am sorry for the trouble this has caused and thank you for reaching out. Kindly please post a sample showing the said issue for us to see and assist you with regards to this matter. Thank you.

Of course, these videos clearly show the purple problem.

Original videos from camera & lut

to view use: ffplay.exe -vf lut3d=file=LUT.cube %1