Codes and Conventions of a Film Trailer

The codes and conventions of a film trailer consists of themes that are reflective of that film's genre. For example in horror films there would be scenes such as people screaming and any other creeky or loud noises, blood and gore and things happening between the protagonist and the 'monster' or whatever it may be, in the film. Also in a action high adrenaline film, in the trailer the audience would see scenes like explosion, fast adrenaline rushing car chases and possibly gun shootings. Lastly, in comedy's you would pretty much see scenes of people laughing, possibly telling jokes and any other humours insidents that may occur.A convention of a film trailer is that a film trailer includes graphic captions such as the release date of that film, the directors name, the actors' names starring in the film and any other text that is related to that film.
Another convention of a film trailer is the use of non-diegetic sound. This is used to help reflect the type of genre a film is. Non-diegetic sound is a sound who's source that is not visible on-screen. An example of non-diegetic is sound effects such as soundtracks to help create different effect to the feel, for example if it was a romantic fil, happy music would be played in the background to help set a mood for that part of the film.
Also included within a film trailer is the production company's logo who have made the film/trailer, a couple of examples of companies are 20th Century Fox, Paramount or Warner Bros. The production company's logos are usually show at the beginning or ending of a film trailer.
Another code and convention of a film trailer is the camera shots used within the trailer. Any camera shot can be used but when in a trailer they are showing the actors who star in the film, close up shots are usually used to show clearly who they are in the film trailer.
Editing is probably one of the most important codes and conventions of a film trailer. A film trailer will literally depend on the editing that is done in it, if the editing is very good then the movie has a high chance of getting a big audience with great review etc. In a horror film it will usually start off with slow cuts then as itb gets futher into the trailer everything usually starts to build up many cuts are used to build up alot of tension for the film.