Guideline 1.2: Time-based Media (part 1)

Principle 1: Perceivable

Provide alternatives for time-based media

You can use this guideline both for time-based media and synchronized media (with another format and/or time-based interactive components), including:

  • audio-only (AO)
  • video-only (VO)
  • audio-video (AV)
  • audio and/or video combined with interaction (AVI)

(Different success criterion apply for each one. It will be marked)

Examples

  • Audio Only (Prerecorded): Provide an alternative that presents equivalent information for prerecorded audio-only content.
  • Video Only (Prerecorded): Provide either an alternative for time-based media or an audio track to present equivalent information for prerecorded video-only content.
  • Audio in synchronized media (Prerecorded): Provide captions, and if possible, also sign language interpretation.
  • Synchronized media (Prerecorded): provide an audio description or media alternative
  • Audio content in synchronized media (Live): provide captions
  • Video content in synchronized media (Prerecorded): Provide audio description
  • When there is so much dialogue that audio description cannot fit into existing pauses in the dialogue, provide an alternative for time-based media (Level A)
  • Don’t forget to embed interactive elements (for example links) in the alternative
  • Sign language interpretation and extended audio description for synchronized media (Level AAA) are recommended where appropiate

More info

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