W3C home > Mailing lists > Public > public-tt@w3.org > June 2009

Re: *Last Call* Timed Text document (Review by June 30)

From: Glenn Adams <gadams@xfsi.com>
Date: Mon, 29 Jun 2009 13:24:11 +0800
Message-ID: <94ad087a0906282224r42ed5daag7f09e771d062cf8d@mail.gmail.com>
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Cc: Weck Daniel <daniel.weck@gmail.com>, "public-tt@w3.org List TTWG" <public-tt@w3.org>, Philippe Le Hegaret <plh@w3.org>
i might be persuaded to consider an informative note, such as:
*Note:* In the context of the subset of SMIL semantics supported by this
specification, the active duration of an element that specifies both end and
dur attributes is equal to the lesser of the value of the dur attribute and
the difference between the value of the end attribute and the element's
begin time.

On Mon, Jun 29, 2009 at 11:05 AM, Silvia Pfeiffer <silviapfeiffer1@gmail.com
> wrote:

> On Mon, Jun 29, 2009 at 12:37 PM, Glenn Adams<gadams@xfsi.com> wrote:
> > But they (end and dur) can be used together, and such use is well defined
> by
> > SMIL semantics, and has a well defined resolution. See [1] under
> "Defining
> > the simple duration" and "Active duration algorithm". We most vehemently
> do
> > not wish to attempt to re-express or paraphrase this (admittedly) complex
> > portion of the SMIL specification.
> > [1]
> http://www.w3.org/TR/2005/REC-SMIL2-20051213/smil-timing.html#Timing-SemanticsOfTimingModel
>
>
> Thanks for that pointer. I think the only thing relevant to us out of
> that 119 page document is the single line:
>
> PAD = MIN( Result from Intermediate Active Duration Computation,  end - B)
>
> which says that the duration of the element is the minimum of "dur"
> and "end - start".
>
> Why make people read 119 pages, when it can be specified so simply?
>
> Regards,
> Silvia.
>
Received on Monday, 29 June 2009 05:24:52 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 2 November 2009 22:41:43 GMT