1912 in film

Events

• Mack Sennett, who had previously worked as an actor and comedy director with D. W. Griffith, formed a new company with New York City entrepreneur Adam Kessel called Keystone Studios. It would play an important role in developing slapstick comedy as the home to the Keystone Kops, English actor Charlie Chaplin, and others.
• July 26 - Edison Studios releases What Happened to Mary?, the first ever motion picture serial.
• October 31 - The Musketeers of Pig Alley, directed by D.W. Griffith, debuts as the first gangster film.