Captioning is the process of displaying text on a screen to provide a written representation of spoken dialogue and sounds in videos or live broadcasts. This text helps viewers understand the content, especially those who are deaf or hard of hearing. Captions can also include descriptions of sound effects and music, enhancing the viewing experience for everyone. There are two main types of captioning: closed captions and open captions. Closed captions can be turned on or off by the viewer, while open captions are always visible. Captioning is essential for accessibility and is commonly used in movies, television shows, and online videos.