I recently purchased a macbook pro and i am trying to put some camcorder footage from my sony vx 2000 onto iMovies. for some reason i cannot import or capture any footage from my camera and tapes onto the imovies. i have the 9 to 4 inch pin firewall cable

i have a sony vx2000 and a macbook pro and i obtained the 9 to 4 inch firewall cable. my issue is that cant get any footage from my vx2000 to my imovies. i have looked up how to do it online and they make seem like you just plug it in and go its all golden. but not for me what am i doing wrong it does seem to be recoginize that my camera is even plugged in and no way letting import of capture any of my footage to my imovies. please help