A trailer is a series of sequences that tells a story in a highly condensed form. It is usually created to entice audiences to watch the film it represents. Often, trailers also include music not found on the soundtrack. In addition, it may contain deleted scenes from the movie.

The term trailer derives from the word trail + -er, referring to the short blank segment at the end of a reel. It was originally used for movies that were intended to trail a feature film. Later, it was adapted as a promotional tool for other media. Nowadays, there are dozens of companies that specialize in creating film trailers. Most are based in Los Angeles.

A trailer is an advertisement that is typically shown before a new film. It provides a brief but accurate picture of the storyline of the movie. Trailers are generally about 2 minutes long and have a non-linear structure. Some trailers are also made using editing techniques to control the pace of the scenes. Usually, the climax of the trailer is the most dramatic.

In the past, trailers were used to show films to audiences before they were available to be seen in theaters. They were supposed to get audiences to leave the theater and see the feature film. Today, they are a highly polished piece of advertising and are a popular way to advertise an upcoming feature film.

Generally, the beginning of a trailer is where the main characters of the film are introduced. This is followed by a billing block. It contains a list of the actors, writers, directors, and producers of the movie. Sometimes, the casting of a minor celebrity can be represented in a trailer as a leading character in the film.

Many modern trailers are composed of scenes that have stereophonic sound. Sound cues can be used to liven up transitions between scenes, and can also sync with particular moments in the film. For example, a suspenseful score could be used for a thriller. Also, a lighthearted pop song might be used for romantic comedies.

Some trailers also have a voice-over narration. The voice-over may be used to introduce the premise of the movie, explain a few scenes, or simply enhance the audience’s understanding of the plot. Other trailers have used voice-over cliches for satirical effect.

Trailers are usually followed by a closing credits montage. These montage features scenes that emphasize emotional moments. Featurettes are often included on DVDs and on TV show websites.

Many movie trailers are composed of scenes that are reminiscent of previous films. For example, a comedy might use the funniest jokes, while an action movie might highlight special effects. However, they should not include footage that will spoil major plot points in the film. Rather, it is important to include memorable scenes from the movie.

Some trailers are produced in digital format and others in 35 mm film. They may be produced at an agency while the film is being cut.