What is the difference between open and closed captioning?
Video has played an important role in education for many decades. Now, in the form of computer-based multimedia, video is increasingly utilized in distance learning and other web-based educational applications. However, the audio portion of a video presentation is inaccessible to people who are deaf or hard of hearing unless it includes captions. Captions are on-screen text descriptions that display a video product's dialogue, identify speakers, and describe other relevant sounds that are otherwise inaccessible to people who are deaf or hard of hearing.