Understanding Audio-only and Video-only (Prerecorded)

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Intent of Audio-only and Video-only (Prerecorded)

The intent of this Success Criterion is to make information conveyed by prerecorded audio-only and prerecorded video-only content available to all users. Alternatives for time-based media that are text based make information accessible because text can be rendered through any sensory modality (for example, visual, auditory or tactile) to match the needs of the user. In the future, text could also be translated into symbols, sign language or simpler forms of the language (future).

An example of pre-recorded video with no audio information or user interaction is a silent movie. The purpose of the transcript is to provide an equivalent to what is presented visually. For prerecorded video content, authors have the option to provide an audio track. The purpose of the audio alternative is to be an equivalent to the video. This makes it possible for users with and without vision impairment to review content simultaneously. The approach can also make it easier for those with cognitive, language and learning disabilities to understand the content because it would provide parallel presentation.

A text equivalent is not required for audio that is provided as an equivalent for video with no audio information. For example, it is not required to caption video description that is provided as an alternative to a silent movie.

See also

Benefits of Audio-only and Video-only (Prerecorded)

Examples of Audio-only and Video-only (Prerecorded)

Resources for Audio-only and Video-only (Prerecorded)

Techniques for Audio-only and Video-only (Prerecorded)

Sufficient Techniques for Audio-only and Video-only (Prerecorded)

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

  1. Providing a full text transcript for the audio

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

  1. Providing a full text transcript of the video content
  2. Providing audio that describes the important video content and describing it as such

Additional Techniques (Advisory) for Audio-only and Video-only (Prerecorded)

Common Failures for Audio-only and Video-only (Prerecorded)