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Re: FYI - Media Accessibility User Requirements WD

From: Glenn Adams <glenn@skynav.com>
Date: Tue, 19 Aug 2014 10:27:48 -0600
Message-ID: <CACQ=j+dBrV+U1y3Ouwb2zCSzoh+UhOvRfDH86HmU9RikOg3FmQ@mail.gmail.com>
To: Nigel Megitt <nigel.megitt@bbc.co.uk>
Cc: TTWG <public-tt@w3.org>
On Tue, Aug 19, 2014 at 10:20 AM, Nigel Megitt <nigel.megitt@bbc.co.uk>
wrote:

>  Thanks for the heads-up Glenn. It looks like these bits:
> http://www.w3.org/TR/2014/WD-media-accessibility-reqs-20140814/#captioning
>  and
> http://www.w3.org/TR/2014/WD-media-accessibility-reqs-20140814/#enhanced-captions-subtitles are
> particularly relevant to us.
>
>  Would anyone object to adopting those requirements as a subset of the
> requirements that TTML 2 and IMSC 1 should be measured against when
> assessing their conformance when it comes to LC/CR as per the process for
> publishing Recommendations (either the old or the new process)?
>

I read through the requirements that would pertain to TTML, and believe the
following need to be addressed:

   - ruby (CC-18)
   - hyperlinking (ECC-2)
   - reading speed modification (ECC-5)

I believe tatechuyoko (CC-16) is already covered by tts:textOrientation.
Reading speed may already be covered (at least in part) by the playRate
parameter of [1].

[1]
https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#time-expression-semantics-media



>  Kind regards,
>
>  Nigel
>
>   From: Glenn Adams <glenn@skynav.com>
> Date: Tuesday, 19 August 2014 16:59
> To: TTWG <public-tt@w3.org>
> Subject: FYI - Media Accessibility User Requirements WD
> Resent-From: <public-tt@w3.org>
> Resent-Date: Tuesday, 19 August 2014 17:00
>
>   Media Accessibility User Requirements Working Draft Updated
>
>    14 August 2014 | Archive
>
>    http://www.w3.org/blog/news/archives/4024
>
>    The Protocols and Formats Working Group (PFWG) today published
>    an updated Working Draft of "Media Accessibility User
>    Requirements," a planned W3C Working Group Note. This document
>    describes the accessibility requirements of people with
>    disabilities with respect to audio and video on the Web,
>    particularly in the context of HTML5. It explains alternative
>    content technologies that people use to get audio and video
>    content, and how these fit in the larger picture of
>    accessibility, both technically within a web user agent and
>    from a production process point of view. Learn more about the
>    Web Accessibility Initiative (WAI).
>
>    http://www.w3.org/WAI/PF/
>    http://www.w3.org/TR/2014/WD-media-accessibility-reqs-20140814/
>    http://www.w3.org/WAI/
>
>
Received on Tuesday, 19 August 2014 16:28:37 UTC

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