WIndows Movie Maker only displaying 1/4 of screen

I just downloaded WMM to edit film for a school project, and the content in the timeline/storyboard won't display on the film display on the right hand side of the screen. When I try to view the content I've put onto the storyboard and watch it with the full screen, the video is only shown in the upper left corner of the screen rater than the full thing..? Any ideas?

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