W3C home > Mailing lists > Public > w3c-wai-gl@w3.org > July to September 2001

RE: Caption synchronization tolerance

From: Charles F. Munat <chas@munat.com>
Date: Mon, 27 Aug 2001 23:59:07 -0700
To: "GLWAI Guidelines WG \(GL - WAI Guidelines WG\)" <w3c-wai-gl@w3.org>
Cc: "Larry Goldberg" <larry_goldberg@wgbh.org>, <geoff_freed@wgbh.org>
Message-ID: <LHEGJAOEDCOFFBGFAPKBOEIDCJAA.chas@munat.com>
Why do captioned objects need to be the same length as uncaptioned objects?
Why wouldn't it be possible (and even desirable) to allow captioned versions
to pause the audiovisual long enough for caption readers to catch up?

Just wondering.

Chas. Munat

> -----Original Message-----
> From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org]On
> Behalf Of Gregg Vanderheiden
> Sent: Monday, August 27, 2001 5:35 PM
> To: GLWAI Guidelines WG (GL - WAI Guidelines WG)
> Cc: Larry Goldberg; geoff_freed@wgbh.org
> Subject: Caption synchronization tolerance
>
>
> >Meeting minutes say:
>  >
>  >>#67WC ask Geoff Freed or someone at WBGH.
>  >>JW GV didn't want a number.
>  >>Action WC: Ask Geoff.
>
>
> Not quite
>
> What I said was that I didn't know if it was possible to create a
> number.   Live captioning is delayed for a number of reasons --
> including allowing people to read and correct the captions before
> transmission.   That delay is unavoidable today.   Yet that delay would
> be unacceptable in a captioned movie.
>
> Also, when doing training, you want the captions to lead any important
> visual event.  That is, you don’t want the person reading the caption
> when they should be looking at the screen to see something critical.
> So having a time gap criterion may yield either an impossible goal or a
> goal that is way too loose for general use.
>
> Larry Goldberg or Geoff Freed would have the answer though.  Perhaps
> there is a standard for Pre-captioned and another for Live-captioned.
> I would suspect though that these should be recommendations or targets
> (and should be in techniques) rather than sufficiency criteria which are
> normative.
>
> Geoff?  Larry?
>
> Gregg
>
>
>
> -- ------------------------------
> Gregg C Vanderheiden Ph.D.
> Professor - Human Factors
> Dept of Ind. Engr. - U of Wis.
> Director - Trace R & D Center
> Gv@trace.wisc.edu <mailto:Gv@trace.wisc.edu>, <http://trace.wisc.edu/>
> FAX 608/262-8848 
> For a list of our listserves send “lists” to listproc@trace.wisc.edu
> <mailto:listproc@trace.wisc.edu>
>
>
>
>
Received on Tuesday, 28 August 2001 04:32:02 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:47:12 GMT