Re: IMSC1 and profile designator

thanks!

On Thu, Oct 8, 2015 at 8:32 AM, Pierre-Anthony Lemieux <pal@sandflow.com>
wrote:

> Hi all,
>
> ISSUE-448 [1] have been filed.
>
> [1] https://www.w3.org/AudioVideo/TT/tracker/issues/448
>
> Best,
>
> -- Pierre
>
> On Thu, Oct 8, 2015 at 7:24 AM, Glenn Adams <glenn@skynav.com> wrote:
> >
> > On Thu, Oct 8, 2015 at 2:08 AM, Nigel Megitt <nigel.megitt@bbc.co.uk>
> wrote:
> >>
> >> In § 6.1 it is stated that the #profile feature MAY be used. I take this
> >> to mean that it is permitted to specify a ttp:profile attribute on the
> >> tt:tt element but not required. There's no suggestion of including the
> >> ttp:profile attribute within a document in a different location to what
> is
> >> defined in TTML1SE.
> >
> >
> > Unfortunately, the way that IMSC is specified, i.e., in terms of whether
> a
> > feature may be used or not, doesn't translate very well to guidance about
> > actual authoring. In this case, the #profile feature covers quite a bit
> of
> > functionality beyond @ttp:profile, and doesn't by itself address the
> > presence or absence of this attribute.
> >
> > I do see the following notes under 7.1 and 8.1:
> >
> > "As specified in 6.10 Features, the presence of the ttp:profile
> attribute is
> > not required by this profile. The profile designator specified above is
> > intended to be generally used to signal conformance of a Document
> Instance
> > to the profile. The details of such signaling depends on the application,
> > and can, for instance, use metadata structures out-of-band of the
> Document
> > Instance."
> >
> > For TTV support of IMSC1, we plan to emit a warning by default if no
> > @ttp:profile is specified. I would like to see IMSC1 updated to specify
> that
> > this profile SHOULD be specified. Whether it is specified or not is
> > independent of whether a processor supports the #profile feature as
> defined.
> >
> >>
> >>
> >> Since the same principle of extension as in TTML1SE applies, it is also
> >> legal (but out of scope of the specification) to include the
> >> ebuttm:conformsToStandard element but strict processors can ignore it.
> >>
> >> Kind regards,
> >>
> >> Nigel
> >>
> >>
> >> On 08/10/2015 08:56, "Cyril Concolato"
> >> <cyril.concolato@telecom-paristech.fr> wrote:
> >>
> >> >Hi,
> >> >
> >> >Reading IMSC1, it is unclear where the defined profile designators
> >> >should be used? In particular it says "the presence of the ttp:profile
> >> >attribute is not required by this profile." Why not? Where should it be
> >> >used? Is there an equivalent to ebutt:conformsToStandard to use them?
> >> >
> >> >Regards,
> >> >Cyril
> >> >
> >> >--
> >> >Cyril Concolato
> >> >Multimedia Group / Telecom ParisTech
> >> >http://concolato.wp.mines-telecom.fr/
> >> >@cconcolato
> >> >
> >> >
> >>
> >
>