The original was made with a movie camera that required a handheld spot light for lighting.   The film was becoming brittle when transferred to VHS and later to DVD.  Brittle pieces of the film were destroyed in the first transfer so if you're missing from the promenade you were probably in the pieces lost.  The quality is not great but considering 47 years ago holding a spot light with one hand and the movie camera with the other-looking through a small hole trying to locate the subjects-well, it gives us a shadow of a long ago event, let your memories fill in the rest.