1.8 KiB
1.8 KiB
1.2.2 Captions (Prerecorded)
- Level: A
- Guideline: 1.2 Time-based Media
- Principle: 1 Perceivable
What it is
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.
How to test
- 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.
- Use the sufficient techniques below as acceptable methods when applicable.
- Confirm none of the common failures apply.
Sufficient techniques (W3C)
- 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
- H95: Using the track element to provide captions
- Using any readily available media format that has a video player that supports closed captioning
Common failures (W3C)
- F8: Failure of Success Criterion 1.2.2 due to captions omitting some dialogue or important sound effects
- 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
- 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