WCAG/1-perceivable/1.2.8-media-alternative-prerecorded.md

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1.2.8 Media Alternative (Prerecorded)

• Level: AAA
• Guideline: 1.2 Time-based Media
• Principle: 1 Perceivable

What it is

An alternative for time-based media is provided for all prerecorded synchronized media and for all prerecorded video-only media.

How to test

• Check: An alternative for time-based media is provided for all prerecorded synchronized media and for all prerecorded video-only media.
• Use the sufficient techniques below as acceptable methods when applicable.
• Confirm none of the common failures apply.

Sufficient techniques (W3C)

• G69: Providing an alternative for time based media
• G58: Placing a link to the alternative for time-based media immediately next to the non-text content
• H53: Using the body of the object element
• G159: Providing an alternative for time-based media for video-only content

Common failures (W3C)

• F74: Failure of Success Criterion 1.2.2 and 1.2.8 due to not labeling a synchronized media alternative to text as an alternative

Resources

• WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#media-alternative-prerecorded
• Understanding: https://www.w3.org/WAI/WCAG22/Understanding/media-alternative-prerecorded.html
• Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#media-alternative-prerecorded

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