I'm using pix_background to do some background subtraction. My internal webcam does this fine.

However when using an external webcam, ( USB HP HD 2300) while it shows me what the external webcam 'sees' in the gemwin, it is as if the pix_background object isn't there.

Closing the patch and opening it again with my internal cam and it takes the pix_background object into consideration again.

Does anybody know why with the external cam it bypasses the pix_packground object? Or how to get it to work.