I'm wanting to convert my Speed Racer DVDs to AVI for convenience and portability. The basic conversion is no problem, but the episodes have been time-compressed (sometimes _very_ noticeably), either for syndication or to fit many on a DVD. I'd like to expand the episodes back to the correct time (<>23 mins) as I convert them. The audio is easy enough, but most video programs focus on changing framerate rather than running time.

Does anyone know of a way to do this?