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.

Note: Although you can technically add closed captions to any type of asset, they make sense primarily with videos, remote assets, and YouTube videos.

Closed captions are added to asset by uploading a file in the Distribution Format Exchange Profile (DFXP [now TTML]) closed caption format.

Note: The default behavior of closed captions in the V3 Player is "Off". You can enable closed captions with the JavaScript function setClosedCaptionsLanguage(), described here.
Note: The Ooyala Android and iOS Mobile SDKs use device-defined Closed Captions Style information. However, some devices, including some older Samsung devices, do not support these features.

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