Instructions:

  Use Play and Pause to start and stop the movie to analyze the video step by step.

  Use the Previous Frame and Next Frame buttons to analyze the video frame by frame.

  Each click of Previous Frame or Next Frame will only move the movie forward or backwards by one frame. So you will need to click it numerous times to see the movement.

  To view different parts of the video, click on different areas of the Time LINE instead of the small circle.