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Re: Reorganizing the requirements in WCAG 1.2

From: Loretta Guarino Reid <lorettaguarino@google.com>
Date: Thu, 24 Jul 2008 19:21:10 -0700
Message-ID: <824e742c0807241921m78e36302x3f2c57852194bd25@mail.gmail.com>
To: "Jan Richards" <jan.richards@utoronto.ca>
Cc: public-comments-wcag20@w3.org

On Tue, May 27, 2008 at 6:50 AM, Jan Richards <jan.richards@utoronto.ca> wrote:
>
> In attempting to harmonize ATAG 2.0's "Guideline A.2.2 [For the authoring
> tool user interface] Display synchronized alternatives for synchronized
> media" with WCAG 2.0's "Guideline 1.2 Time-based Media: Provide alternatives
> for time-based media" I found the WCAG guideline confusing because it's bold
> labels mix the media types to be made accessible (e,g,"Audio-only and
> Video-only (Prerecorded):") with the ways this can be done (e.g. "Sign
> Language").
>
> I think it makes the most sense to follow the lead of WCAG Guideline 1.1 and
> focus on the original media since that's what content authors will have in
> front of them.
>
> NOTE: The proposed changes are purely organizational and are not intended to
> modify any normative requirement.
>
> -----------------------------------------------------------
> LEVEL A:
>
> NOTE: Guideline 1.2 does not apply to any media that act as a *media
> alternatives for text* and are clearly labeled as such.
>
> *Prerecorded Media:*
>
> *Audio-only*
> - A *text alternative* is provided.
> *Video-only*
> - Either:
>  + a text alternative is provided or
>  + an audio track is provided that presents equivalent information.
> *Synchronized Audio and Video*
> - *Captions* of the audio are provided.
> - Either:
>  + a *full text alternative for synchronized media including any
> interaction* is provided or
>  + *audio descriptions* of the video are provided.
>
> -----------------------------------------------------------
> LEVEL AA:
>
> *Prerecorded Media:*
>
> *Synchronized Audio and Video*
> - *Audio descriptions* of the video are provided.
>
> *Live Media:*
>
> *Synchronized Audio and Video*
> - Live *captions* of the audio are provided.
>
> -----------------------------------------------------------
> LEVEL AAA:
>
> *Prerecorded Media:*
>
> *Video-only*
> - A *text alternative* is provided.
>
> *Synchronized Audio and Video*
> - *Sign language interpretation* of the audio is provided.
> - *Extended audio description* of the video is provided.
> - A *full text alternative for synchronized media including any interaction*
> is provided.
>
> *Live Media:*
>
> *Audio-only*
> - A *text alternative* is provided.
>


================================
Response from the Working Group
================================
The handles (bold labels) for each success criterion are meant to be
unique, so that they can be a shorthand for referring to the success
criterion and a memory aid for remembering what it addressed. The
proposed reorganization reuses handles, since different conformance
levels include different requirements for the same media types.


Loretta Guarino Reid, WCAG WG Co-Chair
Gregg Vanderheiden, WCAG WG Co-Chair
Michael Cooper, WCAG WG Staff Contact

On behalf of the WCAG Working Group
Received on Friday, 25 July 2008 02:21:53 GMT

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