Perceivable / 1.2 Time-based Media
1.2.6Sign Language (Prerecorded)
Level AAAProvide a sign language interpretation video for all prerecorded audio content in synchronized media. For viewers whose first language is a signed language, this can be easier to follow than reading captions in a written language. It's a Level AAA criterion, the strictest tier, so it's rarely mandated as a legal minimum.
Note
A detailed commentary for this success criterion is not yet available. In the meantime, this page lists related patterns, techniques, and links to the normative sources.
Related Techniques
Specific implementation techniques for meeting this success criterion. This site doesn't include the full text, so follow the links to the original W3C documents.
Sufficient Techniques(4)
- G54: Including a sign language interpreter in the video stream(opens in a new tab)waic.jp(opens in a new tab)
- G81: Providing a synchronized video of the sign language interpreter that can be displayed in a different viewport or overlaid on the image by the player(opens in a new tab)waic.jp(opens in a new tab)
- SM13: Providing sign language interpretation through synchronized video streams in SMIL 1.0(opens in a new tab)waic.jp(opens in a new tab)
- SM14: Providing sign language interpretation through synchronized video streams in SMIL 2.0(opens in a new tab)waic.jp(opens in a new tab)
Normative References
- Success Criterion 1.2.6 Sign Language (Prerecorded) — WCAG 2.2(opens in a new tab)The normative requirement text.
- Understanding Sign Language (Prerecorded) — W3C(opens in a new tab)Official guidance on intent, examples, and techniques.