Opening sequences establish the genre, setting, and protagonist of a film through one or a few scenes at the beginning. They credit the actors, director, and crew and are usually over a minute long. Film trailers are longer montages that show some of the best scenes to entice viewers and end on a cliffhanger. Trailers make the genre clear and are distributed in cinemas and online by production companies to generate hype and notify audiences of a film's release and unique selling points. Both opening sequences and trailers introduce the main character and genre in an engaging way.

1. What Is The Difference Between Film Opening Sequences
And Film Trailers?
Opening sequences usually show only a couple or few different settings scenes, and the
start of an already viewing film or they are completely animated with no scene from the film
at all. This is to state the actors or actresses names, the director and names of other
important people that helped to make the film, such as the producer and costumes crew.
These sequences are not normally very long, usually just over a minute, to build up
anticipation and the atmosphere of the following film. The primary objectives of film
opening sequences are to establish the genre, setting and protagonist to the audience.
Whereas a film trailer is a combined montage of scenes (usually the some of the ‘best bits’),
this allows the viewer to get an insight of the film. This entices the viewer, often with the
use of enigma codes to wanting to go and see the film, Often the trailer will end on a cliff
hanger in order to do so. It will make clear what genre the film is. These are shown in the
cinema and are put online, such as YouTube to attract viewers. The trailer is a montage
produced by an institution distribution company to create hype and notify the audience of
the release and to showcase the filmunique selling points.
However, they are many similarities, such as; you usually see the main character first, its
engaging and it connotes the genre of the film.