To create a custom camera calibration file, print out a chessboard and take around 10-20 images of the chessboard with the camera, using the same settings as when filming a video.
Each image should contain the entire chessboard. The images should vary the orientation and location of the chessboard in each image.
Once the images have been taken, navigate to Image Processing Editor ➔ Calibrate from files… and fill out the chessboard parameters. Then select the images. RoboDK will generate a calibration file that can be used when creating a pipeline.