The film trailer has been around since 1913 and is an important component in the marketing of film. The first move trailer was made by Loews film company in 1913 for a film called "The pleasure seekers". After this the practise was adopted and used in all Loews theatres, soon going on to be used in all theaters. The company that created the trailers through the 1950s was the National Screen Service.
The purpose of a film trailer is to make the audience want to see the movie and to sell it using just 2 and a half minutes. There are a number of techniques used to excite the reader.
Music helps to set the tone and mood of the trailer. The music used in the trailer is usually not used in the film itself. It is usually popular or well known music chosen mostly for its tone, appropriateness of lyric OR lack of, or recognisability. Such as The Hangover 2 trailer features Kanye Wests "Dark Fantasy" taken from his new album "My beauitful dark twisted fantasy" which is very well know.
Known as "Teaser trailers", film trailers are usualy released a year before the films release to create a hype and entice the audience without giving away too much information which could spoil the film. They are usually shown in cinemas, television and on the internet on websites such as Youtube. They also feature in popups on social networking sites such as Twitter and Facebook.
