Hi CP
Not by using Software Video Camera. This little beastie is
getting quite long in the tooth. It was never really intended for
what you are considering.
Yes, I know it's free and comes with the application and all,
but there is a different and much more robust alternative if you
are desiring narration. And you may even add it after the fact. The
application is known as Captivate and can be viewed by
clicking here.
Cheers... Rick