I just purchased a Canopus ADVC300 video capture box, and was dissapointed to find that the bottom few rows of pixels in my digitized video contain the top of an adjacent video frame. The effect looks much like out of synch analog video. Canopus tech support told me that this is normal because I am capturing 640x480 to 720x480. Is this correct? If so, is there a tool that I can use in either Studio Pro or Premier Elements to crop or mask over the bad pixels? Thanks!