Monitoring Video Through Firewire?

EDIT - I decided the below information was too wordy so to simplify: I have cable TV streaming in through my Firewire port. What is a good program for viewing it?

So today I decided to run a cable from our TV room to my laptop desk so I can watch "educational" programming. But I ran into a small problem:

CableVision to old VCR so I can make use of its built-in tuner, RCA cables from VCR to ADS (Converts inputs to RCA & Firewire out), and Firewire from ADS to MacBook.

This all works fine but I then realized I have no decent program to watch the video on. I can open Quicktime and see a small window, and no doubt if I hit record the sound would be captured as well but the sound is not audible while monitoring.

I tried iMovie and again had a small window to watch. Still not what I want.

So what can I use to watch the video from my Firewire full screen and with sound?

TY for any input.

 

Hey thanks guys. Unfortunately VLC was the first thing I tried. It's wants me to use eyetv which I don't have. It seems to have no option to simply poit it at the Firewire.

It's most frustrating to have this signal coming in that I can clearly see in Quicktime via new video file. Seems like there should be a simple full screen viewer out there but I can't find one.

Thanks again.