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WAS Notes: Multimedia, Animations, and Motion

I'm studying for the WAS certification. These are some of the notes I've taken recently.



The four methods of providing alternatives to time-based media are captions, transcripts, audio descriptions, and sign language interpretation. These alternatives are covered by Sections 504 and 508 of the Rehabilitation Act and the 21st Century Video Communications and Accessibility Act (CVAA).



Audio Descriptions

Sign Language Interpretation

Media Player Accessibility

Background Sounds

Animations and Motion

The accessibility problems with animation and motion can range from being distracting all the way to causing medical emergencies. Attention deficit disorders, vestibular disorders (vertigo/dizziness), and epilepsy are the most common cases to look out for.

Seizure-Inducing Flashes

Parallax Effects

Background Videos and Animations

Animations from Interactions

There should be a way to opt out of unnecessary animations (prefers-reduced-motion or a setting on the user’s profile).