(im still trying to figure out how to edit 15 seconds, out of an hour long video of the second spin flight!)
Depends on the format, but VirtualDub is free and does simple edits. And SUPER, though a pain in various ways, can convert from and to a lot of formats, so if VirtualDub can't read the video you can fix it. GSpot will tell you the format if you need to know. These are free tools - Avid, Final Cut Pro, Adobe Premiere, Sony Vegas, etc will do a more sophisticated job at significant cost.
B