Day 2: Time-Based Media Skip to Content

Perceivable 1.2 Time-Based Media

Provide alternatives for time-based media.

Examples

  • Provide captions and transcripts that can be read by a screen reader for audio and video.
  • Provide transcripts for audio and video that can be read by a refreshable braille reader at the reader’s pace.
  • Provide extra audio descriptions in video when the video audio is insufficient to describe what is happening on the screen.
Read the WCAG 1.2 Specification

Success Criteria

Depending on which level of compliance your website needs, the following criteria needs to be met.
Criterion Level Description
1.2.1 A Alternative content is provided for all prerecorded audio and video.
1.2.2 A Captions are provided for all prerecorded video.
1.2.3 A Audio descriptions or an alternative are provided for all prerecorded video.
1.2.4 AA Captions are provided for live audio content.
1.2.5 AA Audio descriptions are provided for all prerecorded video.
1.2.6 AAA Sign language interpretation is provided for all prerecorded audio content.
1.2.7 AAA Extended audio descriptions are provided for all prerecorded video.
1.2.8 AAA A media alternative is provided for all prerecorded time-based media.
1.2.9 AAA A media alternative is provided for all live audio.
Read about all WCAG 1.2 Success Criteria