Film trailers are advertisements used to promote movies and intrigue audiences to watch them. Trailers show brief clips and snippets from films without revealing the full plot. This reveals enough to generate interest but does not give away the entire story. Trailers are shown in various places like cinemas, DVDs, online, and on television to reach broad audiences. Different types of trailers may be released at different times leading up to a film's release to continue sparking fans' excitement and interest. The goal is to highlight exciting parts of the film and persuade audiences to see the movie in order to increase revenue.