Talk about your prospects problems. Then let them know about your product. Tell them how your product can solve their problems.
Consider using a hook at the beginning of the video to arouse your audience curiosity, so that they are more likely to watch the entire video. For example, you can take a look at the video of Tao Of Bad Ass, a top selling dating product at Clickbank. http://www.thetaoofbadass.com/special/goldfish/indexfull.html
Notice how he uses the goldfish as the hook.