Web Accessibility

Pre-recorded Audio with Video (Multimedia)

Meeting WCAG 2.0

A To claim Single A conformance, all of your pages and documents must meet all Single A requirements for all content

A A To claim Double A, all of your pages and documents must meet all Single A and all Double A requirements

A A A To claim Triple A, all of your pages and documents must meet all Single A, Double A and Triple A requirements

About pre-recorded audio with video and accessibility

Making pre-recorded audio with video (multimedia) accessible can benefit people with movement, visual, hearing, cognitive or seizure-related disabilities. Accessible video can also benefit people using certain technologies, which might not support video. For example, some mobile devices have limited FLASH support.

Single A

Making the multimedia

Starting with 'shooting' with a camera or capturing video via a software package such as Captivate, or creating an animation, make sure that:

Making the purpose of your multimedia clear

Because a video-only file is not text, it cannot be 'read' by a screen reader. Therefore, it must have a text alternative that serves the same purpose. This alternative must also be identified so people know it is non-text content. This alternative can be

Or, a brief description of the video, or a descriptive label of the video and:

Captions must be provided for all pre-recorded audio in multimedia to help people with hearing or cognitive impairments understand the content. They also help people understand content if the language of the captions is unfamiliar. Captions must be

  • Synchronised with the audio and video displaying information that applies to the timeline
  • Contain enough information to provide an alternative to the combined content of the video and audio
  • Operable by the user (if closed)

Captions can be

If the multimedia is clearly identified as a media equivalent to text content, captions are not required.

Specific techniques
Operating the multimedia in a webpage

People must be able to operate the multimedia by any input device. Therefore, just providing functionality for the mouse is not enough, although the mouse should be able to access any content on the page. The keyboard must be able to operate the all functionality of the multimedia

Also,

Double A

Making the multimedia

No specific requirements relating to pre-recorded multimedia production. Although if any text is included in the video, as screens or information added to precede the viewing of the multimedia, such as credits or advertisements

Operating the multimedia in a webpage

The controls to operate the multimedia should be accessible with a keyboard, and should be visible (highlighted) when they receive focus. Therefore it is best to keep it simple, so developers should keep the default 'focus' functionality of the browser, assistive technology or operating system.

Triple A

Making the multimedia
Making the purpose of your multimedia clear