But what he discovered, at the time, was 68 boxes of 35mm and 8mm footage in the Warner Bros. archives. This film is a revelation. For 100 minutes it shows you just how intoxicating Elvis Presley was when he began to perform live in Las Vegas in 1969 and the early 1970s. There is an indescribable magic in watching one of the brightest of all stars conjure a crowd’s hysteria. And because the image on screen is so crystal clear and crisp, his aura bursts through as if it’s a window.