Foot OverPronation

In order to fully demonstrate what I am talking about when I discuss my running form, here are some screenshots from the video analysis I took of myself running yesterday.

Good (Midfoot Strike and little pronation):

Bad (Over Pronation):  You can see how the ankle and foot cave inward.

Video Clip (Some Good and Some Bad):

One thing that jumps off the video to me is that my feet appear to be running down the center line of the treadmill.  In my next session I am going to try to focus on landing them on the sides of that imaginary line rather than directly on it.  I think this could be a big reason for the pronation.