A trailer is a short video that showcases highlights from an upcoming movie, television show, or video game. It is designed to generate excitement and interest among potential viewers by providing a glimpse of the story, characters, and visual style. Trailers often include dramatic music and quick cuts to create an engaging experience. Trailers are typically released online and in theaters before the main feature. They can vary in length, usually ranging from one to three minutes. Many trailers are accompanied by promotional materials, such as posters and social media campaigns, to further attract audiences to the film or show.