crossover

Hi, I assume this is an incompatability issue between the card and camera? Geovision GV-600 4 BNC bought from reputable supplier vers: 8.4 P4 HT PC Kobi model: K-38-MV-1ES securitycamera2000 model: PZ0420 super HAD 600tvl both of these cameras experience a picture jump, moved to other BNC inputs but same thing - so I connected them to a VCR and no jumping. (40sec video) http://s748.photobucket.com/albums/xx122/J--a--y/Jay%20Sec%20cam/?action=view&current=File20121113142529.mp4 but cheapass $8 cameras from ebay work great I couldn't find much thru searching, except geo is working on it. Just wondered if there is anything I can do or if geo came up with anything or do I just cop it? Regards