1 / 12 2 / 12 3 / 12 4 / 12 5 / 12 6 / 12 7 / 12 8 / 12 9 / 12 10 / 12 11 / 12 12 / 12 ❮ ❯ Source filmmaker - the source filmmaker (sfm) is the movie-making tool built and used by us here at valve to make movies inside the source game engine.