- From: Jim Allan <jimallan@tsbvi.edu>
- Date: Thu, 18 Feb 2010 12:01:52 -0600
- To: "'UAWG list'" <w3c-wai-ua@w3.org>
Mark and I did some work on 4.9. Still a bit rough, but should serve as a basis for discussion. Jim and Mark Action-227 http://www.w3.org/WAI/UA/tracker/actions/227 4.9.8 Navigate Multimedia: The user can navigate efficiently along the timebase using a continuous scale, and by relative time units within rendered audio and animations (including video and animated images) that last three or more seconds at their default playback rate. (Level A) 4.9.9 Navigation by semantic structure within the time-based media, such as by chapters or scenes, if present in the media (AA). Action-231 http://www.w3.org/WAI/UA/tracker/actions/231 4.9.10 Track Enable/Disable of Time-Based Media During time-based media playback, the user can determine which tracks are available and select or deselect tracks. These selections may override global default settings for captions, audio descriptions, etc. (delete 4.9.b) Implementation-.@@need to retrieve info from html 5, track selection.etc Action-253 http://www.w3.org/WAI/UA/tracker/actions/253 Action-252 http://www.w3.org/WAI/UA/tracker/actions/252 4.9.11 User has the ability to scale/size the playback viewport within the limits of the containing viewport. Implementation: User needs video larger but still needs access to other application (take notes during playback), fullscreen does not allow that. Content should reflow as user adjusts playback viewport. @@need SC for full screen 4.9.12 User has ability to scale and position alternative media tracks independent of base video. Implementation: Text scaling - default setting should apply, UA should allow separate control of the caption tracks. User needs larger captions. Snap captions outside of video, change text size and caption viewport size/position. User need to reposition and make the sign language track larger. Action-45 http://www.w3.org/WAI/UA/tracker/actions/45 4.9.13 User has ability to control the contrast and brightness of the content within the playback viewport. Implementation for all of 4.9 If the browser is playing the video natively, then there is only 1 user agent. Then it falls on the browser to meet the UAAG spec. If author uses windows media player inside the video element, the browser needs to map its native controls to the embedded wmp controls, and provide access to all the controls. User needs to be able to define rendering parameters of playback at render time. For example, a YouTube video wall (9 videos playing) you get to focus on one to have the live audio, captions, etc. need good javascript interface, so when focus changes the default size audio, alternative media setting swith to the focused. Other play but audio, captions, etc, cease. Jim Allan, Accessibility Coordinator & Webmaster Texas School for the Blind and Visually Impaired 1100 W. 45th St., Austin, Texas 78756 voice 512.206.9315 fax: 512.206.9264 http://www.tsbvi.edu/ "We shape our tools and thereafter our tools shape us." McLuhan, 1964
Received on Thursday, 18 February 2010 18:02:35 UTC