What happens if, as an experiment, you start a new project, add only that MP4 (which I assume is from a camcorder) and let the program match the project settings to this video's specs? Then does Smart Fix behave differently?
I'm not surprised the program is struggling with a 352x240 MPEG (Did THIS come from a camcorder?), but I'm surprised if standard HD camcorder video gives it trouble. At least under controlled circumstances, as our experiment should show.
... View more