RE: Timed Text roles

The TTWG discussed this need, and concluded it would be exceedingly
difficult or impossible to define them in a way that would retain their
utility while not overly constraining such use. It was recognized that
some existing standards, such as the US Digital Television Closed
Captioning (DTVCC) standard, CEA-708, similarly enumerated such a list
but without providing any further definition.

Notwithstanding the above, we may consider adding informative examples
to the text of DFXP during the process of transitioning from CR to REC.
If you would like to submit such examples, possibly with descriptions,
then that would be most welcome.

Regards,
Glenn Adams
Chair, TTWG

> -----Original Message-----
> From: public-tt-request@w3.org [mailto:public-tt-request@w3.org] On
Behalf Of Benjamin
> Hawkes-Lewis
> Sent: Thursday, October 11, 2007 5:47 PM
> To: public-tt@w3.org
> Cc: w3c-wai-ig@w3.org
> Subject: Timed Text roles
> 
> 
> The current Timed Text (DXFP) draft specifies a ttm:role attribute
with
> a set of standard values:
> 
> http://www.w3.org/TR/ttaf1-dfxp/#metadata-attribute-role
> 
> But it fails to explain what these standard values actually mean,
which
> makes it very difficult to know precisely how to use them. For
example,
> should the Timed Text equivalent of a narratorial voiceover be
"caption"
> or "narration"? Should a subtitle in the same language as spoken
> material be "caption" or "transcription" or "dialog"? What are the
> "quality" and "reproduction" roles for? What's the difference between
> "action" and "kinesic"? Would it be possible for the TT WG to clarify
> the standardized values with definitions and examples?
> 
> public-tt has only ever had two postings, neither of which was
relevant
> to Timed Text and one of which was simply spam, so I'm not sure that
it
> has any active readership. So with apologies I'm copying in w3c-wai-ig
> as the most general accessibility group for discussion. I hope it's
not
> off-topic.
> 
> --
> Benjamin Hawkes-Lewis

Received on Thursday, 11 October 2007 12:05:34 UTC