Our association in KY has agreed to use the film from the NFL that was used at the Grass Roots clinic. While the film is of NFL games, the commentary describing the actions of the officials is geared toward philosophy of officiating, not toward specific mechanics of rules. I saw the film at that clinic and thought it was very helpful, as did others in attendence. Contact Al Hynes at NFL via the website included below.
http://www.nflhs.com