Thank your for your reply Jonathan,
Using your suggestions, I was able to make things work. I only had to modify in the XMP the xcr:PosePrior and xcr:CalibrationPrior from “intial” to “locked”. Also for some reason I could only export the calibration with 3 frames or more but that should not be a problem for the actual videos.
However, since I do no have access to the CLI, it requires some manual steps. So if someone has a solution to get the job done outside of RC (ideally OpenCV), I am still very interested.