VICTORIA ON FILM: Bergdorf Goodman gets into the movie business on Sunday — at least on the Internet. The retailer will bow a digital short film on its Web site for Victoria Beckham’s fall collection of dresses. The digital short, “Swings,” features eight models filmed on a London street in a single take, perching on rope swings placed on everyday objects, from a bus stop to a building portico, and swinging in unison. Beckham herself then swings into the frame in one of her dresses. The short was directed by Matt Jerrett and produced by 19 Entertainment, which backs Beckham’s collection. It’s the second short film she has done to promote her line. The first was shot at an English countryside estate for the spring 2009 collection. And the latest short has another motive — it will help promote Beckham’s appearance at Bergdorf’s on Fashion’s Night Out on Sept. 10.