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Re: SMIL: draft items for UA guidelines

From: Lloyd Rutledge <Lloyd.Rutledge@cwi.nl>
Date: Thu, 01 Oct 1998 10:15:53 +0200
Message-Id: <UTC199810010815.KAA16627.lloyd@klipper.cwi.nl>
To: Judy Brewer <jbrewer@w3.org>
cc: w3c-wai-ua@w3.org, Jon Gunderson <jongund@staff.uiuc.edu>, allan_jm@tsb1.tsbvi.edu, hoschka@w3.org, kerscher@montana.com, cindy.king@gallaudet.edu, robla@real.com, Dick.Bulterman@cwi.nl, Lynda.Hardman@cwi.nl, Lloyd.Rutledge@cwi.nl, Geoff_Freed@wgbh.org

On Wed, Sep 30 1998 Judy Brewer wrote:
> #3. SMIL needs to be extended to be able to handle audio descriptions of
> video images (see sample of suggested code below) -- Agreed, and the method

Keep in mind that this extension would be quite simple: the addition
of one test attribute.  The timing model of SMIL currently meets the
timing requirements of audio descriptions.  This new test attribute,
named "system-audio-desc", would be assigned as "on" to audio elements
that contain audio descriptions, causing them only to be played if
audio description is requested.  Other test attributes, such as
"system-captions", that function in the same manner for similar types
of adaptation are already in SMIL 1.0.  New test attributes are
perhaps the simplest (depending on what they test, but testing for
assigned user characteristics is trivial) and most expected type of
SMIL extension.


Lloyd Rutledge                                         vox: +31 20 592 41 27
CWI (Centrum voor Wiskunde en Informatica)             fax: +31 20 592 41 99
Kruislaan 413,  NL-1098 SJ Amsterdam, The Netherlands  net: lloyd@cwi.nl
P.O. Box 94079, NL-1090 GB Amsterdam, The Netherlands  http://www.cwi.nl/~lloyd
Received on Thursday, 1 October 1998 04:17:06 UTC

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