Captions (Live)
Summary:
WCAG 1.2.4, "Captions (Live)," is dedicated to enhancing the accessibility of live audio content in videos for deaf or hard-of-hearing users by providing captions. This guideline is essential for ensuring that live broadcasts are accessible to everyone.
What:
This criterion requires real-time captions for all live audio content in synchronized media, like live-streamed videos. Captions should accurately represent spoken words and relevant sounds as they occur.
Why:
Captions for live content allow users who are deaf or hard of hearing to access information in real-time, ensuring they are included in live events, news, and other broadcasts.
Examples and Scenarios:
- Live Webinars: Providing real-time captioning for spoken content during live online events.
- Streaming News Broadcasts: Captioning live news as it's broadcasted on a website or app.
- Online Live Events: Including captions for concerts, conferences, or lectures streamed over the internet.
How to Comply:
- Websites: Implement live captioning for all streamed live content, ensuring the captions are synchronized and accurate.
- Mobile Apps: Offer real-time captioning for any live audio content within the app.
- Software Applications: Similar to websites and apps, provide live captions for any live audio content streamed through the application.
Exceptions:
- Not Publicly Broadcasted: Private or unpublicized events that are not intended for the general public might not require live captions.
- Technical Constraints: Situations where the technology for providing live captions is not available or feasible. However, efforts should be made to provide accessibility wherever possible.