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Captions

Text shown on a video that gives the dialogue and important sounds in time with the picture.

Also called
closed captions

Captions are the words and meaningful sounds of a video, shown as text in sync with the picture. They serve people who are Deaf or hard of hearing, and they are used far more widely than that: in a quiet office, on a train, in a noisy kitchen, or by anyone learning the language. Closed captions can be turned on and off; open captions are burned into the picture.

Automatic captions are a start, not a finish. They miss names, technical terms, and speaker changes, so a person needs to check them. WCAG requires captions for prerecorded video at Level A and for live video at Level AA.

Source

Web Accessibility Perspectives Videos: Explore the Impact and Benefits for Everyone

W3C Web Accessibility Initiative (WAI), 2024. Checked .

Transcript
A text version of an audio or video recording that a person can read instead of listening.
Audio description
A narration track that describes what is happening on screen for people who cannot see the video.

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