| Rule ID |
Video 4 |
| Conformance |
Required |
| Definition |
Captions are provided for all live audio content in synchronized media. |
| Purpose |
- Text and audio descriptions provide a means for people who cannot see the video to understand the video content.
- Some types of learning disabilities affect visual processing, text and audio descriptions provide an alternative way to understand the video content.
|
| Conformance |
Required |
| WCAG Success Criteria |
Success Criterion 1.2.4 Captions (Live)
Other Related Success Criterion:
|
| Rule Category |
Audio/Video |
| Rule Scope |
Element |
| Techniques |
- For the
video element use the track element to add audio descriptions to the video content.
- Use WebVTT to encode the timed stamped captioning information for the audio content.
- For
object and embed elements use aria-describedby to reference a text description of the video content.
|
| Information Links |
|