A trailer is a short video that showcases highlights from a movie, television show, or video game. It is designed to generate interest and excitement among potential viewers by providing a glimpse of the storyline, characters, and visual effects. Trailers are often released before the main content to build anticipation. Trailers can vary in length, typically ranging from one to three minutes. They are commonly shared on platforms like YouTube and during film festivals or television broadcasts. The purpose of a trailer is to entice audiences and encourage them to watch the full production when it becomes available.