Hi, 
I don't know am I able to explan what is going on but I will try maby someone will understand a can help. 
Soo, this is the probloem 
  
Geovision I have install is 8.2 with pci card for 6 cameres. 
On all camera preview in real time is ok - on all cameras I see video correct. 
But when go to log view to see rocorded video files only on camera1 video is ok like on prewiev in real time and on other 5 I can't see there is only lines over vide files, couple of colour with angle of 30 egrees from left bottom to right up. 
  
Maby some codec problem I wrealy don't know. So if someone can help it will be good.