I've seen people animated by like using motion capture like things or I guess tracing over videos for animations and I was wondering if there was a plug-in or even a separate program I could use with Flash and hopefully free!
It could also just be automated digital tracing. Find edge filter, etc... If you can paste a link to an example, it'd be easier to know what you're talking about.
Ya lemme get what another person here has done! [link] Oh wait looking at others of this I think I got my answer of wha it is (and the other commenter) Now would be to find a program to help with rotoscopy.