Understanding Accessibility
by Vivienne Trulock
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Guideline 1 - Provide equivalent alternatives to auditory and visual content
Checkpoint 1.4 - For multimedia movies or animation, synchronize captions or auditory descriptions of the visual track with the presentation
How do I do it?
This guideline refers to making available text versions of the audio content in a multimedia element so that deaf individuals can access it. It also refers to having a text description of the multimedia itself available so that blind people know what the multimedia content and purpose is. This can be achieved either having captions embedded into a QuickTime movie, by using the SMIL specification or by enabling accessibility options within the multimedia source code.
How do I check that it meets the WCAG criteria for Checkpoint 1.4?
To check whether accessible text versions or alternative text descriptions have been applied, the JAWS 6.20 screen reader can be used on every page which contains multimedia.
If alternative content is available when a page containing multimedia is scanned with JAWS 6.2 the page will have passed the check.
Where alternative content cannot be found, the page will have failed the check.
