Flip Webcam Image (Camera Settings)

I tried out iStopMotion on a MacBook Pro using a webcam (older Logitech) on a tripod. I soon realised that the image is flipped horizontally. Is there any way to tell iStopMotion to flip the camera image horizontally? I haven’t seen anything alike in the camera settings and there seems not to be a system setting on the mac that allows to configure that. Have I missed something? If not, please receive the following user story:
As an iStopMotion user with an external webcam, I would like to configure the camera in iStopMotion in a way that the image is not flipped horizontally in order to make movies more naturally and without twisting my head, do post-processing etc.