DIFFERENCE BETWEEN CLOSED CAPTIONS AND SUBTITLES SOFTWARE
At least one version of most major media viewer software applications now supports closed captions. Closed captions appear only when the user agent (e.g., a media viewer player) supports them. When videos are accessed on the World Wide Web, they also may have captions that are open or closed. Since 1993, decoders have been required to be built into television sets 13 inches or larger sold for use in the United States. Open captions always are in view and cannot be turned off, whereas closed captions can be turned on and off by the viewer.įor video that is displayed on television sets, special devices called decoders must be available in order to view closed captions. Captions are synchronized with the video image so that viewers have equivalent access to the content that is originally presented in sound, regardless of whether they receive that content via audio or text. 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.
However, the audio portion of a video presentation is inaccessible to people who are deaf or hard of hearing unless it includes captions.
Now, in the form of computer-based multimedia, video is increasingly utilized in distance learning and other web-based educational applications. Video has played an important role in education for many decades.
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