the audio portion of a video program is transcribed into a computer system, inserted into the vertical blanking interval of a video signal, and superimposed through the use of a special decoder or built-in feature of a television set. Used primarily to assist hearing impaired viewers, closed captioned videos appear much like subtitled films.
Visual captioning on a television screen for the hearing impaired that superimposes subtitles on programs. Distributed via Line 21 of the Vertical Blanking Interval, CC requires a decoder to view it.
A system of encoding word characters onto certain lines of a video stream which can be decoded and displayed by a compatible television. Provides program subtitles for the hearing impaired
Information that is recorded in a non-visible part of TV image that can be read by a Closed Caption Reader to generate subtitles on the viewers television set.
Textual video overlays that are not normally visible, as opposed to open captions, which are a permanent part of the picture. Captions are usually a textual representation of the spoken audio. In the United States, the official NTSC Closed Caption standard requires that all TVs larger than 13 inches include circuitry to decode and display caption information stored on line 21 of the video signal. DVD-Video can provide closed caption data, but the subpicture format is preferred for its versatility.
Most television sets are now designed to include closed captioning, an option which allows dialogue and sound effects to be printed out at the bottom of the screen so the program may also be enjoyed by hearing impaired viewers.
A text transcript of the audio content in video clip which is embedded into the video file itself by the author. The transcript is synchronised with the actions in the video. This is particularly useful to allow someone with a hearing impairment to access video content.