Welcome to our community, Jason
Unfortunately Captivate doesn't offer a way to record that
will end up resulting in one long full motion clip that resides on
a single slide.
However, the development team did come up with something that
may help you. Hop out and read the article at the link below. It
discusses something called the "Full Motion Recording (FMR)
Editor". This is a utility that allows the Captivate author to
slice, dice, split and join full motion clips. So perhaps using
that beastie you will be able to create that long five minute clip.
Click
here to view the article
Cheers... Rick