I'm working on importing a VHS into iMovie 6 HD to burn it to DVD. But when I import the VHS I get a weird filter over the new clip that is being imported. The quality is bad and the images are really black. I am using a capture card hooked up to my VHS player and then to my computer through firewire. Could the card be going bad? I have tried different VHS players and different tapes but nothing seems to be fixing it. Any ideas?