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Re: CP, ISSUE-30: Link longdesc to role of img [Was: hypothetical question on longdesc]

From: Janina Sajka <janina@rednote.net>
Date: Tue, 20 Mar 2012 16:15:51 -0400
To: David Singer <singer@apple.com>
Cc: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>, Sam Ruby <rubys@intertwingly.net>, Laura Carlson <laura.lee.carlson@gmail.com>, Maciej Stachowiak <mjs@apple.com>, Paul Cotton <Paul.Cotton@microsoft.com>, HTML Accessibility Task Force <public-html-a11y@w3.org>, public-html@w3.org
Message-ID: <20120320201550.GA5722@sonata.rednote.net>
David Singer writes:
> On Mar 19, 2012, at 23:43 , Leif Halvard Silli wrote:
> > 
> > For the video element, then I am open to consider the idea of that 
> > @longdesc could point to a poster description: It makes some sense, as 
> > the poster is an image. But I have so far not included that in the CP.
> A long description of a video should (if it were to exist at all) describe the *video*.  The poster is merely a transient representation of the video before it plays.  If someone needs a non-timed, readable, rendition of the content of the video, they don't need a long description of the poster.
> Scenario: a how-to video on how to bid on an online auction site.  The poster image shows a bidding card (as used in live auctions) and a five dollar bill.  The user asks for a long description of the video.  How useful is it to be told "The background is plain white. The number 242 is shown on a white card, on a stick. The card is slightly crumpled at the edges; the numerals are in a black sans-serif font, and occupy the whole card. Below the card is a single five dollar bill.  The bill is shown with the image of Lincoln face up; it appears to be rather old, with the colors no longer sharp, and visible crumpling. There is a small tear in the top right-hand corner. The bill overlaps the bottom end of the stick, which is, as a result, invisible."
> ????

It's not just about utility. There are descriptions that might attempt
to capture artistic, or historic, or cultural aspects. These are
increasingly useful in the realm of audio and video.

So, David, specifically from your example, I found I rather appreciated
your description. I would hate to think it would be globally denied for
lack of a simple markup mechanism.


> David Singer
> Multimedia and Software Standards, Apple Inc.


Janina Sajka,	Phone:	+1.443.300.2200

Chair, Open Accessibility	janina@a11y.org	
Linux Foundation		http://a11y.org

Chair, Protocols & Formats
Web Accessibility Initiative	http://www.w3.org/wai/pf
World Wide Web Consortium (W3C)
Received on Tuesday, 20 March 2012 20:16:25 UTC

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