As a sidenote, for doing this on a Mac, you can use Quicktime Pro to assemble a series of frames into a movie.
Then you can take this movie, and transcode it for .dv, and bring it into Final Cut (Express|Pro), or iMovie.
I've done this many times, works really well for me. (Visual Hub does a nice job of transcoding various formats to .DV for editing as well... which I believe is based on the ffmpeg library.
