iMovie problems

when i look at a video on my mac its fine looks normal but once i put the same video in imovie or click get info and look at the preview its as if it took the video duplicated it and stuck it next to the original in the same frame.. any thoughts on how to fix this?

this is a link to the picure to see what i mean.

http:/i.imgur.com/Y58U9xq.jpg