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1.2.4 Captions (Live)
- Level: AA
- Guideline: 1.2 Time-based Media
- Principle: 1 Perceivable
What it is
Captions are provided for all live audio content in synchronized media.
How to test
- Check: Captions are provided for all live audio content in synchronized media.
- Use the sufficient techniques below as acceptable methods when applicable.
Sufficient techniques (W3C)
- G9: Creating captions for live synchronized media
- G93: Providing open (always visible) captions
- G87: Providing closed captions
- SM11: Providing captions through synchronized text streams in SMIL 1.0
- SM12: Providing captions through synchronized text streams in SMIL 2.0
- Using any readily available media format that has a video player that supports closed captioning
Resources
- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#captions-live
- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/captions-live.html
- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#captions-live