I have an mpeg movie that's an hour and 52 minutes long with no keyframes whatsoever. I open it in TMPGEnc so I can insert some keyframes, and it keeps telling me the movie is only an hour and 15 minutes long. When I open the same movie with virtualdub, it's an hour and 52 minutes, with about 6000 more frames. I can't figure out why it keeps cutting off the last 6000 frames of my movie. Is there any other way to add some keyframes without converting to a huge avi?