Understanding Success Criterion 1.2.5: Audio Description (Prerecorded)

Audio description is provided for all prerecorded video content in synchronized media.

Intent of Success Criterion 1.2.5: Audio Description (Prerecorded)

The intent of this Success Criterion is to provide people who are blind or visually impaired access to the visual information in a synchronized media presentation. The audio description augments the audio portion of the presentation with the information needed when the video portion is not available. During existing pauses in dialogue, audio description provides information about actions, characters, scene changes, and on-screen text that are important and are not described or spoken in the main sound track.

For 1.2.3, 1.2.5, and 1.2.7, if all of the information in the video track is already provided in the audio track, no audio description is necessary.

1.2.3, 1.2.5, and 1.2.8 overlap somewhat with each other. This is to give the author some choice at the minimum conformance level, and to provide additional requirements at higher levels. At Level A in Success Criterion 1.2.3, authors do have the choice of providing either an audio description or a full text alternative. If they wish to conform at Level AA, under Success Criterion 1.2.5 authors must provide an audio description - a requirement already met if they chose that alternative for 1.2.3, otherwise an additional requirement. At Level AAA under Success Criterion 1.2.8 they must provide an extended text description. This is an additional requirement if both 1.2.3 and 1.2.5 were met by providing an audio description only. If 1.2.3 was met, however, by providing a text description, and the 1.2.5 requirement for an audio description was met, then 1.2.8 does not add new requirements.

Benefits of Success Criterion 1.2.5: Audio Description (Prerecorded)

Examples of Success Criterion 1.2.5: Audio Description (Prerecorded)

Resources Success Criterion 1.2.5: Audio Description (Prerecorded)

Techniques for Success Criterion 1.2.5: Audio Description (Prerecorded)

Sufficient Techniques

  1. G78: Providing a second, user-selectable, audio track that includes audio descriptions
  2. G78 AND SL1
  3. Providing a version of a movie with audio descriptions using one of the following:

  4. Providing a movie with extended audio descriptions using one of the following:

  5. G203

Advisory Techniques

  • H96
  • Providing audio description in multiple languages in SMIL 1.0 (future link)
  • Providing audio description in multiple languages in SMIL 2.0 (future link)
  • Providing audio description for live synchronized media (future link)

Failures