Crossing the Line is a 2008 war short film written and directed by Peter Jackson set in World War I. It is the first film made with the Red One camera. The film has no dialogue apart from the incidental speech of background characters. Neill Blomkamp serves as additional director.

In 2007, the Red Digital Cinema Camera Company, manufacturers of the Red One, a new digital motion-picture camera, offered Jackson the chance to test their prototype cameras and record some sample footage for the 2007 NAB convention. Jackson instead proposed that he should use the testing time to shoot a short film. In March 2007, staff from Red flew to New Zealand with two of their prototype cameras, nicknamed "Boris" and "Natasha". The film was shot over two days, 30 and 31 March, in Masterton. The short film was shown two weeks later at NAB where it attracted large crowds and long lines.