Porter entered motion picture work in 1896, the first year movies were commercially projected on large screens in the United States. He was briefly employed in New York City by Raff & Gammon, agents for the films and viewing equipment made by Thomas Edison, and then left to become a touring projectionist with a competing machine, Kuhn & Webster's Projectorscope. He traveled through the West Indies and South America, showing films at fairgrounds and in open fields. He later made a second tour through Canada and the United States.