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CTA-708 (formerly EIA-708 and CEA-708) is the standard for closed captioning for ATSC digital television (DTV) viewing in the United States and Canada.It was developed by the Consumer Electronics sector of the Electronic Industries Alliance, which became Consumer Technology Association.
Closed captioning (CC) is a form of subtitling, a process of displaying text on a television, video screen, or other visual display to provide additional or ...
Teletext was created in the United Kingdom in the early 1970s by John Adams, Philips' lead designer for video display units to provide closed captioning to television shows for the hearing impaired. [6] Public teletext information services were introduced by major broadcasters in the UK, [7] starting with the BBC's Ceefax service in 1974. [8]
Subtitle (or closed captioning) information is also transmitted in the teletext signal, typically on page 888 [1] or 777. A number of similar teletext services were developed in other countries, some of which attempted to address the limitations of the British-developed system, with its simple graphics and fixed page sizes.
For many, closed captions are a helpful tool—and one that an increasing number of Gen Z and millennials prefer when watching videos, according to a 2023 YouGov survey, with respondents saying ...
YouTube also offers manual closed captioning as part of its creator studio. [23] YouTube formerly offered a 'Community Captions' feature, where viewers could write and submit captions for public display upon approval by the video uploader, but this was deprecated in September 2020. [24]
EIA-608, also known as "Line 21 captions" and "CEA-608", [1] is a standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico. It was developed by the Electronic Industries Alliance and required by law to be implemented in most television receivers made in the United States.
The software allowed teachers to post topics arranged in a grid which contain videos and text-based information, and allowed students to submit their own videos in response. [3] Students and teachers were able to add items to the videos they upload including sticky notes and stickers, [ 4 ] and the videos uploaded could include automatically ...