Hey Warren,
I've been wondering about this for a while. Using some vid of youtube and having a bit of a practice!
I have not done such a thing yet, but this has given me a kick.
The only thing I can think that would be a negative would be the quality and resolution. You are working with "second hand" data.....me thinks....
So the final result may not be as good as what you might want it to be.
Up side is that when you do do it for real.....and process it with the experience you have gained, it will look and be better I guess!!!!!!
))
Just my 2 cents
Cheers
Bartman