1.2.1: Audio-only and Video-only (Prerecorded) [A]

Description Sufficient Techniques Advisory Techniques Failures Notes

Description

For prerecorded audio-only and prerecorded video-only media, the following are true, except when the audio or video is a media alternative for text and is clearly labeled as such:

Prerecorded Audio-only

An alternative for time-based media is provided that presents equivalent information for prerecorded audio-only content.

Prerecorded Video-only

Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.

Sufficient Techniques

Sufficient Techniques for Success Criterion 1.2.1

Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques.

Situation A: If the content is prerecorded audio-only:

• G158: Providing an alternative for time-based media for audio-only content

Situation B: If the content is prerecorded video-only:

• G159: Providing an alternative for time-based media for video-only content
• G166: Providing audio that describes the important video content and describing it as such

Advisory Techniques

Advisory Techniques for Success Criterion 1.2.1

• H96: Using the track element to provide audio descriptions

Failures

Failures for Success Criterion 1.2.1

• F30: Failure of Success Criterion 1.1.1 and 1.2.1 due to using text alternatives that are not alternatives (e.g., filenames or placeholder text)
• F67: Failure of Success Criterion 1.1.1 and 1.2.1 due to providing long descriptions for non-text content that does not serve the same purpose or does not present the same information

Notes