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Re: Is longdesc a good solution? (was: Acessibility of <audio> and <video>)

From: David Poehlman <david.poehlman@handsontechnologeyes.com>
Date: Tue, 9 Sep 2008 13:55:06 -0400
Message-ID: <FC471526FD3E4814B956823E75E2D120@HANDS>
To: "Leif Halvard Silli" <lhs@malform.no>
Cc: "Henri Sivonen" <hsivonen@iki.fi>, "Matt Morgan-May" <mattmay@adobe.com>, "HTML WG" <public-html@w3.org>, "W3C WAI-XTECH" <wai-xtech@w3.org>

I was trying to say that @longdesc should contain an indepth description and 
not be used as replacement.  We don't have anything for long replacement 
that I know of.

----- Original Message ----- 
From: "Leif Halvard Silli" <lhs@malform.no>
To: "David Poehlman" <david.poehlman@handsontechnologeyes.com>
Cc: "Henri Sivonen" <hsivonen@iki.fi>; "Matt Morgan-May" 
<mattmay@adobe.com>; "HTML WG" <public-html@w3.org>; "W3C WAI-XTECH" 
Sent: Tuesday, September 09, 2008 1:31 PM
Subject: Re: Is longdesc a good solution? (was: Acessibility of <audio> and 

David Poehlman 2008-09-09 17.55:

> If a manuscript is available, I don't see the need for a transcript which 
> to
> me seems redundant.

That would be depend on what the author wanted to present also.
E.g. consider that the video only contained a short part of the
speech, that place where everything went horribly wrong etc.

> Barring this, I am not certain that *@longdesc* is appropriate for either
> since replacement/substitution is not *description*.  I fear we vear from
> the value of @longdesc if we use it in a manner which provides 
> substitution.
> an @longdesc of a video would be something achin to textual audio
> description.

I complained that Henri took <video> to mean commercial video. But
I think here you mix the name "longdesc" with "long description".
"longdesc" is a bad name for something which is meant to represent
  "a long or complex alt".

> A transcript or a manuscript is the full text or in the case
> of a transcript, perhaps an annotated full text of what is said in the
> <video> which provide proper substitution.  In any case, even what is in 
> the
> @longdesc in this case is replacement and description probably needs to
> confine its self to describing the activity and the surroundings etcettera
> without including the content.  We'd get the names of the characters, the
> colors and sizes, what they are dressed like, where the event is being 
> held
> etc.

This is not in line with what @longdesc is in HTML 4. In fact, if
anything, it would have been the @alt which contained what you say
the @longdesc resource should contain. Consider the  example code
in the HTML 4 specification:

<IMG src="sitemap.gif"
      alt="HP Labs Site Map"
leif halvard silli
Received on Tuesday, 9 September 2008 17:55:51 UTC

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