Trailer (promotion)

A trailer (also known as a preview, coming attraction, or attraction video) is a short advertisement, originally designed for a feature film, which highlights key scenes of upcoming features intended to be exhibited in the future at a movie theater or cinema. It is a product of creative and technical work. Movie trailers have now become popular on DVDs and Blu-ray discs, as well as on the Internet, livestreaming and mobile devices. Of some 10 billion videos watched online annually, film trailers rank third, after news and user-created video.