Can't get iMovie to import from VHS recorder
I am trying to import video from a decent quality VCR (a JVC S-VHS machine) into iMovie via a Canopus ADVC55.
I am using S-video connection from the VCR player into the ADVC55, then firewire from this into my Macbook Pro.
In iMovie i have selected import mode (with the small camera icon) and the import window states 'Camera connected'.
The problem is that when i hit play on the VCR i get no video playing back into the iMovie window.
I'd really appreciate any pointers. Am i missing something obvious?
Thanks in advance.