This article from School Library Journal, 1 Nov. 2010, by Richard Bryne looks well worth following up. He says :
"There was a time, not too long ago, that making a video required expensive video equipment and software. That’s no longer true. Now, without spending a dime on cameras or software, your students could craft the next great documentary or YouTube sensation."
All that is needed is creativity and patience...oh and the time to try these out!