This technique relates to Success Criterion 1.2.2: Captions (Prerecorded) (Sufficient as a way to meet G87: Providing closed captions).
The objective of this technique is to use the HTML5
track element to specify a captions timed text track for a video element. Caption timed
text tracks contain transcription or translation of the dialogue, sound effects, relevant
musical cues, and other relevant audio information, suitable for when sound is unavailable
or not clearly audible.
src attribute of the
track element is a URL that is the address of the text track data.
kind attribute of the
track element indicates the kind of information in the timed text. captions text tracks
provide a text version of dialogue and other sounds important to understanding the
video. Subtitles contain only the dialogue. If other audio information is important
to understanding the video, a subtitle track will not be sufficient to meet the success
Some regions use the term "subtitle" for any visible text representation of the audio track. An author may mark up a timed text track in the language of the audio track as kind=subtitles, instead of kind=captions, and may include additional relevant audio information. It is not best practice to use subtitles in this situation, since it may confuse users who are trying to find captions, but such a timed text track would meet the requirements of Success Criterion 1.2.2.
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For each video element used to play a video:
- Check that the video contains a
kindcaptions in the language of the video.
- Check #1 is true.