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ACTION-642: Smith the 2.11.6 intent/examples

From: Greg Lowney <gcl-0039@access-research.org>
Date: Tue, 15 Nov 2011 20:29:51 -0800
Message-ID: <4EC33C3F.7060205@access-research.org>
To: WAI-UA list <w3c-wai-ua@w3.org>
Here is the existing text:


        2.11.6 Stop/Pause/Resume Time-Based Media:

The user can stop, pause, and resume rendered audio and animation <http://www.w3.org/WAI/UA/2011/ED-IMPLEMENTING-UAAG20-20111104/#def-animation> content (including video and animated images) that last three or more seconds at their default playback rate. (Level A)

*Intent of Success Criterion 2.11.6:*
Users with sensory, attentional, or cognitive impairments may have difficulty following or understanding multimedia content. By allowing time-based media to be stopped, paused, and resumed, users are able control the presentation rate, providing time to understand or act upon presented content before continuing, or to stop potentially distracting or harmful content.

*Examples of Success Criterion 2.11.6:*

oTo be written

*Related Resources for Success Criterion 2.11.6:*

oWAI-ARIA <http://www.w3.org/WAI/intro/aria>


Here are some suggested examples, using placeholder names:

oAdam reads more slowly than average because of his dyslexia. He's watching a video of a lecture, and when the video shows slides, he presses the space bar to pause the video so that he can read the text at his own speed. When he's ready to continue, he presses the space bar again to resume the video.

oAngelica uses a web site to watch and listen to user-contributed podcasts, but when one starts playing she realizes that the level of white noise in the soundtrack is likely to trigger her audio-induced seizures. She quickly clicks on the player's STOP button (or presses the equivalent keyboard command) and the noise is instantly discontinued.

oAllesandro finds it impossible to ignore visual changes, and so finds unnecessary animations make it very difficult for him to read or interact with other content on the screen. When he's trying to read an article on a newspaper's web site and finds an animated advertisement or moving text of a news ticker continually distracting him, he presses the Esc key (or chooses the appropriate command from the menu bar) to tell his web browser to stop all animations.

oAmaryllis is blind and is listening to streaming audio on a web page. When she wants to respond to an incoming email message she needs to pause the audio, which would otherwise interfere with her ability to hear her screen reader.


I also suggest changing the SC to clarify that by "animation" we do not just mean video and animated images; this is clear if a person reads the definition of "animation", but the two inline examples might be misleading. Changing "(including video and animated images)" to "(including video, animated images, or changing text)" would avoid that problem.

     Thanks,
     Greg
Received on Wednesday, 16 November 2011 04:30:22 GMT

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