Trailer terminology and Definition

A trailer is an advertisement for a film used to encourage people to watch it when its released. Depending on the genre of film, trailers can be aimed at many different age groups and specific film fanatics by using various methods to attract their attention. Every trailer is 2 minutes and 30 seconds maximum and within that they must explain some of the plot line, show clips from the actual film, introduce characters and actors and tell people the age and release date.