Rule ID |
Audio 1 |
Definition |
audio elements must have caption or text transcription of the audio content. |
Purpose |
- Captions and text transcripts provide a means for people cannot hear the audio to understand the audio content.
- Some types of learning disabilities affect speech perception, captions and text transcripts provide an alternative way to understand the audio content.
- When the language of the audio is different than the native language of the listener, captions and text transcripts support the listner in understanding the audio content.
|
Mappings |
-
HTML4 Legacy Techniques
(Required)
-
HTML5 and ARIA Techniques
(Required)
|
WCAG Success Criteria |
1.2.1 Audio-only and Video-only (Prerecorded) (Level A, Primary Success Criterion)
Other Related Success Criterion:
|
Rule Category |
Audio/Video |
Scope |
Element |
Target Resources |
audio elements
|
Techniques |
- Use the
track element to add captioning to the audio content.
- Use WebVTT to encode the timed stamped captioning information for the audio content.
- Use
aria-describedby to reference a text transcript of the audio content.
|
Manual Checks |
- When captions are enabled on the media player, check to make sure the captions visible.
- If there is a caption make sure the captions accurately represents the audio content.
- If there is a text transcript make sure the transcript accurately represents the audio content.
|
Informational Links |
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