Have you loaded an early state while recording at the end of the process? That'd truncate the movie is you stopped it after that. If you used several state slots during recording, one of them might contain a fuller version of your movie.
Load your movie, switch to recording mode, and try loaded state slots you used, one by one. The one that is the farthest is as much as you have preserved. Before stopping a movie, the last frame of it should always be stored to one of the states, maybe even named state to be sure.
tl;dr: Each state saved while the movie is loaded, contains some part of your movie.
Warning: When making decisions, I try to collect as much data as possible before actually deciding. I try to abstract away and see the principles behind real world events and people's opinions. I try to generalize them and turn into something clear and reusable. I hate depending on unpredictable and having to make lottery guesses. Any problem can be solved by systems thinking and acting.
