41 lines
1.7 KiB
Markdown
41 lines
1.7 KiB
Markdown
[Back to 1 Perceivable index](index.md)
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# 1.2.2 Captions (Prerecorded)
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- Level: A
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- Guideline: 1.2 Time-based Media
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- Principle: 1 Perceivable
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## What it is
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Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
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## How to test
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- Check: Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
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- Use the sufficient techniques below as acceptable methods when applicable.
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- Confirm none of the common failures apply.
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## Sufficient techniques (W3C)
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- G93: Providing open (always visible) captions
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- G87: Providing closed captions
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- SM11: Providing captions through synchronized text streams in SMIL 1.0
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- SM12: Providing captions through synchronized text streams in SMIL 2.0
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- H95: Using the track element to provide captions
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- Using any readily available media format that has a video player that supports closed captioning
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## Common failures (W3C)
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- F8: Failure of Success Criterion 1.2.2 due to captions omitting some dialogue or important sound effects
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- F75: Failure of Success Criterion 1.2.2 by providing synchronized media without captions when the synchronized media presents more information than is presented on the page
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- F74: Failure of Success Criterion 1.2.2 and 1.2.8 due to not labeling a synchronized media alternative to text as an alternative
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## Resources
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- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#captions-prerecorded
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- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/captions-prerecorded.html
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- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#captions-prerecorded
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[Back to 1 Perceivable index](index.md)
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