- From: Ian Jacobs <ij@w3.org>
- Date: Mon, 12 Jun 2000 10:49:09 -0400
- To: Jon Gunderson <jongund@uiuc.edu>
- CC: w3c-wai-ua@w3.org
Jon Gunderson wrote: > > Ian, > For some types of cognitive disabilities, people with visual impairments > and some types of screen reder and magnification software my > understanding was that it was important to turn off the > rendering or not allow the rendering of video. > Freeze may work for many people, but may not work for > all people. What is the advantage of freezing a frame? It sounds like there are a couple of requirements: 1) Stop things from moving 2) Stop things from being too busy (e.g., don't open too many viewports). But is "don't render content" a requirement? If so, then why (still) video content and not graphically rendered text? Or graphics? I don't think we have a requirement for "make this page less busy" - the closest we get is "don't open too many viewports". So what are the accessibility requirements surrounding video and animation that freezing does not address? - Ian > At 10:33 PM 6/9/00 -0400, Ian Jacobs wrote: > >Hello, > > > >Please consider the following editorial clarification to > >checkpoints 3.3, 3.5, and 3.6 (of the 7 May draft [1]): > > > > 3.3 Allow the user to turn on and off rendering of video. > > [Priority 1] > > > > 3.5 Allow the user to turn on and off animated or > > blinking text. [Priority 1] > > > > 3.6 Allow the user to turn on and off animations and > > blinking images. [Priority 1] > > > >After discussion with Charles and Eric Hansen about > >these checkpoints, we concluded that the requirement > >was to "freeze" video and animations. The term > >"turn on and off" may be construed to mean "do not > >render at all" but I don't believe that is the requirement > >expressed by these checkpoints. The accessibility problem > >in these cases (unless I am mistaken) arises from the > >distraction of the motion, not the mere rendering of > >the visual information. We do have a P2 checkpoint > >about turning off the rendering of images (checkpoint 3.9). > >Therefore, I propose using the term "freeze" instead > >of "turn on and off" for these three checkpoints. > > > > - Ian > > > > > >[1] http://www.w3.org/WAI/UA/WD-UAAG10-20000507 -- Ian Jacobs (jacobs@w3.org) http://www.w3.org/People/Jacobs Tel: +1 831 457-2842 Cell: +1 917 450-8783
Received on Monday, 12 June 2000 10:49:14 UTC