For the first several decades of television broadcasting, sets displayed images with a 4:3 aspect ratio in which the width is 1.33 times the height—similar to most theatrical films prior to 1960. This was fine for pre-1953 films such as The Wizard of Oz or Casablanca. Meanwhile, in order to compete with television and lure audiences away from their sets, producers of theatrical motion pictures began to use "widescreen" formats such as Cinemascope and Todd-AO in the early-to-mid 1950s, which enable more panoramic vistas and present other compositional opportunities. Although the aspect ratio was the height of a television screen, these formats might be twice as wide as a TV screen when televised. To present a widescreen movie on such a television requires one of two techniques to accommodat