From the YouTube description:
Here is something rare indeed. John directed this footage for possible use in one of his promo videos. Most likely "Whatever Gets You Though the Night" but some similar footage was used for "#9 Dream" and aired in the UK. John spent the day around New York filming scenes in Central Park and various other locations. Just John and one camera man. After being in front of the camera for several hours, John wanted to capture some footage of average folks, and filmed these scenes Candid Camera style; most did not know they were being filmed. This is part of several 16mm film reels re-discovered in 2001.