The purpose of a film trailer is to promote and up coming film to the public and the people who will most probably go and see the film when it comes to the big screen. Film trailers so key parts in the film that entice the audience to want to know what happens next therefore they go and see the film to find out. A trailer is to advertise a film that will be exhibited to the cinema in the future.
Film magazine front covers
The purpose of film magazine front cover is to promote a film to audiences that tend to buy magazine and browse them. Certain magazine front covers are more appealing to some audiences rather than others as they are aimed at certain age groups so the magazine will know what to put on the front the enable them to reach the audience they want and the people who buy there magazine. Most people these days don't buy magazines because of the internet but certain magazines such as total film have interviews with film stars that cannot be seen anywhere else.
Film Posters
The purpose of a film poster is to promote a film before it hits the cinema. These are released months before the film comes out to give and insight to what they film is about and reach people out and about rather than on the internet and through a magazine front cover. Film posters are made in a campaign to promote a film as the distributors will sit down and decide what methods will get their film noticed and how much people will respond to it. A lot of information is put onto a film poster to ensure that the film sells such as the name, actors that are in the film the rating which is given by the BBFC. Most film posters have a well known actor/actress on the front on the magazine this is because if the audience see a actor such as Brad Pitt on the front cover they will go see the film because he is such a good actor whereas if a unknown actor was on the poster it would make people more hesitant to go and see the film.