Audio Description or Media Alternative (Prerecorded)

Understanding WCAG2.0

To prepare transcripts of lectures, prepare transcribed texts. When raising texts, it is necessary to describe in detail the information necessary for the visually impaired to understand the image, such as "audiences rumbling" "(laugh)". Simply preparing transcripts of utterances of simple speakers will not be conformant.

If you do not prepare a transcribed text, give an explanation by voice commentary on what is happening on the screen. This audio description should also be described in detail, such as who speaks to help the visually impaired to understand the video.

In order to conform to 1.2.3, it is necessary to satisfy either of the above.

Principle Perceivable Information and user interface components must be presentable to users in ways they can perceive.
Guideline Time-based Media Provide alternatives for time-based media.
Criterion Audio Description or Media Alternative (Prerecorded)
(1.2.3 A)
Alternative content or audio commentary on time-dependent media is provided for recorded video content included in synchronized media.

URL of Techniques for WCAG 2.0