Interview frequency: …
Short answer
Provide accurate synchronized captions, full transcripts, and audio descriptions for silent visual events, and avoid autoplaying audio. If autoplay audio is necessary, it must stop within 3 seconds or provide a clear way to stop or control its volume (WCAG 1.4.2).
Explanation
Closed Captions do not only transcribe dialogue; they also describe meaningful sound effects (such as [sad music] or [loud applause]). Full transcripts let blind users read video content with Braille devices or search the text quickly. Any interactive media should give users full control over volume, seeking forward, and rewinding without surprises.
Common mistakes
- Automatically playing videos or promotional ads with sound as soon as a site opens, disturbing screen-reader users.
- Relying on automatic captions without human review for language and terminology accuracy.