Wiktionary
rotoscope
n. A technique in which animators trace live action movement frame by frame. vb. (context transitive English) To use this technique upon.
Usage examples of "rotoscope".
The fans themselves seem to be the strongest force in how professional a piece will look, since no one is going to learn how to rotoscope multiple light sabers or create CGI X-Wings on the fly over a weekend just because it sounds like a cool idea.
Again, the story has to save the piece, which is not the easiest thing in the world when most of your effort is dedicated to the fine-tuning of your choreography and rotoscope technique.