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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

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