from wikipedia: "After Groden returned from his Army tour in 1967, he became a photo technician working in a New York City motion picture processing lab; he had special expertise blowing up 8mm film for theatrical distribution. In 1969 the company did a large job processing film for the documentary Woodstock; and because of that work, it was awarded a contract from Life to work on the Zapruder film, the 27-second home movie captured by Abraham Zapruder of the Kennedy assassination. Groden worked on that project and made an additional unauthorized copy of the film, which he then kept hidden for several years, fearing not only the legal ramifications but also for his own life."
So this is one of the things on the DVD - a hi-resolution, unedited copy of the Zapruder film.
The clip in question is a low-res copy where many people have said they see the driver fire a pistol backwards at Kennedy.
In Groden's copy, it's just a glare off the windshield visor.. not a pistol.
The damning thing about that moment in the Zapruder film is that the driver hits the brakes (something a trained secret service officer would never do during an ambush), and turns around to make sure the shooters are finished blowing JFK's head off before he steps on the gas.
