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RE: timeContainer default value for body and div

From: Sean Hayes <Sean.Hayes@microsoft.com>
Date: Fri, 12 Dec 2008 23:50:43 +0000
To: Philippe Le Hegaret <plh@w3.org>, "Glenn A. Adams" <gadams@xfsi.com>
CC: "public-tt@w3.org" <public-tt@w3.org>
Message-ID: <90EEC9D914694641A8358AA190DACB3D2FCEAFAC76@EA-EXMSG-C334.europe.corp.microsoft.com>

I think the thrust of the discussion was that less timing annotation could be achieved with body = par, div = seq and relative durations

<div>
  <p begin='1s' dur='1s' >Caption 1</p>
  <p dur='1s' >Caption 2</p>
  <p dur='1s' >Caption 3</p>
  <p dur='1s' >Caption 4</p>
  <p dur='1s' >Caption 5</p>
</div>

However I grant you that in all the content I am seeing, explicit begin and end timing seems to be the norm and this kind of relative authoring is somewhat uncommon, so perhaps par everywhere makes the most sense for interop with current tooling.


Sean Hayes
Media Accessibility Strategist
Accessibility Business Unit
Microsoft

Office:  +44 118 909 5867,
Mobile: +44 7875 091385

-----Original Message-----
From: Philippe Le Hegaret [mailto:plh@w3.org]
Sent: 12 December 2008 22:37
To: Sean Hayes; Glenn A. Adams
Cc: public-tt@w3.org
Subject: timeContainer default value for body and div

On Fri, 2008-12-12 at 12:50 -0500, Geoff Freed wrote:
> SH:  Next:  default timeContainer for <body>.  Currently is sequential.  Seems to be a mistake.
>
> GA:  It's the default of par on div.  Should be the other way around.  In general, divs are going to be targeted to a single region and the text that goes into a given region is going to be sequential by default.  Content to multiple regions are going to be in parallel.  For some reason we got it backwards.


<div timeContainer='par'>
  <p begin='1s' end='2s'>Caption1a</p>
  <p begin='2s' end='3s'>Caption1b</p>
</div>

Caption1a is from 1s to 2s and then Caption1b from 2s to 3s.

<div timeContainer='seq'>
  <p begin='1s' end='2s'>Caption2a</p>
  <p begin='2s' end='3s'>Caption2b</p>
</div>

Caption2a is from 1s to 2s and then Caption2 from 5s to 6s.

So, I believe that the default value for div, which is par, is correct.
That's what the implementations are doing.

However, the default value for body, which is currently seq, is
incorrect. We'd like the children to be displayed simultaneously, so we
need to change the default to par as well.

Philippe
Received on Friday, 12 December 2008 23:51:52 GMT

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