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 typically include key scenes, music, and voiceovers to create an engaging preview of the content. Trailers are often released before the official launch of the media they represent, serving as a marketing tool. They can be found in theaters, on television, and online platforms like YouTube and social media. The effectiveness of a trailer can significantly influence audience anticipation and box office success.