Audio-only and Video-only (Prerecorded)

In short

Alternatives are provided for prerecorded audio-only and video-only media.

How Percelia tests it

There is no reliable purely automated signal for this criterion. Percelia assesses it AI-assisted and routes it to human review.

This criterion is judgment-bound and is always put to a human reviewer at Percelia, even at high confidence.

Official source

W3C Understanding document (w3.org)

Criteria under the same guideline

• 1.2.2 Captions (Prerecorded)
• 1.2.3 Audio Description or Media Alternative (Prerecorded)
• 1.2.4 Captions (Live)
• 1.2.5 Audio Description (Prerecorded)