The user could also buy a USB or Firewire Video input device for the Imac. Record the Video with the Capture device on your HDD, and then Convert them to DVD format.
Granted the quality is smaller, but I have ripped quite a few videos using my Quadra and placed them onto my G4, to share (with myself at work) on the web. Which is funny because I also have a L2 G3 6500/275 that can do the same thing but in bigger / better Quality.