The film trailer starts with a green screen that tells you that it has passed the age related tests. There are websites to verify the authenticity of this.
There are often quick displays of the film company logos.
Somewhere in the trailer you get the film title, a tag line, the unique selling points USP - such as the director, the actors, other films that have been linked to these actors/directors. You sometimes get all of these but other times just some of them.
The montage is usually quite fast paced with the editing cut to flash from one scene to another quickly.
There is sometimes a voice over, or there are lines taken from the film itself.
The music is used to add to the tension or the feel of the film. Sometimes a song is used, sometimes it is specially composed music.
The order of the clips is not necessarily in the order in which they appear in the film.
The transitions between clips are slick.
The actors in the film are seen in the clips and sometimes their names are put up on screen as well.
The release date is shown or at least it says"Coming Soon".
There is some blurb at the end that is similar to the blurb on the posters.
There are sometimes some more FilmCompany logos at the end.
More modern trailers often include a Facebook or Twitter or WWW. link so that you can do some more research into the film and the actors.
Trailers are designed to be watched on the Internet as well as in cinemas.
