Video trailers are short promotional clips designed to give audiences a preview of a film, television show, or video game. They typically highlight key scenes, characters, and themes to generate interest and excitement. Trailers are often released before the main content to build anticipation and attract viewers. These trailers can vary in length, usually ranging from 30 seconds to a few minutes. They are commonly shared on platforms like YouTube and social media, making it easy for fans to access and share them. Effective trailers can significantly influence a project's success by drawing in larger audiences.