16mm print on YouTube

http://www.youtube.com/watch?v=d2cp3cD5hsE (rest are sidebarred)

This must have been from a 16mm rental print. I read that Disney used to offer movies for rental on 16mm film. It also gives you an idea of how the film was framed in theaters. It was made in fullscreen, but was intended to be matted in widescreen for theaters.

I also noticed that the film apparently came in 4 reels. Reel 1 is 15 minutes long, reel 2 is 17 minutes, reel 3 is 17 minutes, and reel 4 is 24 minutes. I never got why some films that are a little over 70 minutes long have 4 reels, and others have 5 of them. Could different budgets have something to do with it?