Time-based Media
Summary:
WCAG 1.2 focuses on making audio and video content accessible, especially for users who can't see or hear it. The main goal here is to ensure that everyone, regardless of their ability to hear or see, gets the same information from media content. This section covers both pre-recorded and live media, and it's important to understand the differences in how we make each type accessible.
What:
This criterion addresses the need for alternatives for audio and video content. For pre-recorded media, this means things like captions, audio descriptions, and transcripts. For live media, the focus is on providing real-time captions. The key difference is the immediacy and method of providing accessibility features - live content requires real-time solutions.
Why:
Think about trying to watch a video without sound or seeing a live webinar without captions if you can't hear. This criterion is about giving those with hearing or visual impairments the same chance to access this content. It's not just about compliance but about inclusivity and reaching a wider audience.
Examples and Scenarios:
- Pre-recorded Videos: A tutorial video should have captions and an audio description to ensure it's accessible to users who are d/Deaf or blind.
- Live Webinars: Real-time captioning is crucial so that participants who are d/Deaf or hard of hearing can follow along.
- Audio Content: For a podcast, a transcript should be provided for those who can't hear it.
How to Comply:
- Websites and Digital Platforms: Use captioning services for videos. For audio content, ensure a transcript is available. For live streams, integrate real-time captioning tools.
- Mobile Apps: Similar to websites, ensure any in-app media has captions and transcripts, and consider audio descriptions where appropriate.
Exceptions:
- Live Captions: While live captions are ideal, they might not be required if the content is provided in a text format simultaneously (like a live text blog along with a live audio stream).
- Controlled Media: If the media is not publicly available and is used in a controlled environment like a school, different standards can apply.