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7.1.1. Captioning playback

Where ICT displays video with synchronized audio, it shall have a mode of operation to display the available captions. Where closed captions are provided as part of the content, the ICT shall allow the user to choose to display the captions.

Notes

Captions may contain information about timing, colour and positioning. This caption data is important for caption users. Timing is used for caption synchronization. Colour can be used for speaker identification. Position can be used to avoid obscuring important information.

Testing methods

Type of compliance Test 1
Pre-conditions
  1. The ICT displays or processes video with synchronized audio.
  2. Captions are provided in the video.
Procedure
  1. Check that there is a mechanism to display the captions.
Result Pass: Check 1 is true
Fail: Check 1 is false

 

 

Type of compliance Test 2
Pre-conditions
  1. The ICT displays or processes video with synchronized audio.
  2. Closed captions are provided by the content.
Procedure
  1. Check that there is a mechanism to choose to display the captions.
Result Pass: Check 1 is true
Fail: Check 1 is false

Requirement details

Reference number: 7.1.1

Related requirements

Related functional statements

Related technical requirements

No related technical requirements are associated with this technical requirement

There is currently no content classified with this term.

Components that implement this clause

react-html5video

by mderrick

A customizeable HTML5 Video React component with i18n and a11y.

ableplayer

by ableplayer

fully accessible cross-browser HTML5 media player.

phonegap-mobile-accessibility

by phonegap

PhoneGap plugin to expose mobile accessibility APIs.

Captionator

by cgiffard

HTML5 polyfill for closed captioning with the
element, and implements the WHATWG Timed Text Track specification.