One of the best free video-editing tools available is VideoPad. In the version I have you can add video files in pretty much any format, add audio files and stills to your movie, choose from a range of effects such as rotate and speed, add voice-over tracks, transition effects such as cross-fade, text overlays which can be static or scrolling, and even add another video using chroma key (green screen) or as an inset in the screen. The free version only allows you to save footage in wmv or avi format, but packs an enormous amount of power – making it my favourite choice of software for student movies – and my own! The current free download does not look quite the same as the version I downloaded a few years ago now, but still looks good!
The VideoPad site has thorough tutorials on how to use the software, so teaching students how to use it should not be a big problem.
I believe that student videos have multiple uses from filming literary works to recreating history or making report-backs on research tasks. I like to post student videos on Moodle and get students to assess each other’s work using the Choice module. This ensures that students watch each other’s work and reflect in some way on it.
I find that the ability to edit footage leads students to be more adventurous and creative than is usual for report-back type activities. By adding music and images to footage they have filmed, students can express ideas that cannot be expressed in words alone, and the recognition they get from their peers for these surprising “ooo” moments is priceless. My own kids love making videos and spend hours longer on this type of homework than any other.