make opencv to work with sensoray2255

hi everyone 

i am using sensoray 2255 frame grabber connected to sony camera D70.The
sensoray work fine, but when i try to display from the sensoray using
opencv, it displays a gray unsteady image. i am using linux ubuntu 8.04,i
have also install v4l to support sensoray drivers. How to make opencv to
display clearly from sensoray? 

Please Help!!

	   
					
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