purpose of trailors, Film magazine front covers and posters in marketing a film.

A trailer is a very short advertisement often shown at the beginning of movies or on the television sometimes shown on DVDs and blu-ray discs, that show highlights or certain parts of a film, the trailers are used before films so that viewers are attracted to their films, film trailers are viewed by nearly 10 billion viewers a year. Trailers are useful in making people attracted to a certain film.
The purpose of film magazine front covers are to attract and increase the popularity and increase the hype about a film so that the readers are persuaded to go out and watch the film, posters are used so that you can see the film everywhere you go all day everyday so that the film is constantly in your mind this will eventually make you go and watch the film.