Function of a trailer

The function of a trailer is to show snippits of a film to entice a choosen target auidience. Its also cariflies the genre of the film being previewed. A trailer also provides the auidience with an insight into what the film is about, for example the trailer will give a quick overview of the storyline as well as where it is based (location) when it is set and also the cast will be shown, which is an important factor because more respected actors will bring in a larger auidence.