Adding Closed Captions
Closed captions are additional text shown within a video during playback. The captions typically contain an audio transcript of the video.
Closed captions improve the viewing experience for hearing impaired viewers as well as viewers who are not fluent in the spoken language of the video. Additionally, adding closed captions has been shown to significantly increase the viewership of online content.
Beyond driving additional viewership, many government and educational sites are required to have closed captions available for their video content to comply with government regulations.
Closed captions are added to asset by uploading a file in the Distribution Format Exchange Profile (DFXP [now TTML]) closed caption format.