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Re: [DRAFT] TTWG's response to your comments about IMSC 1.0.1

From: Pierre-Anthony Lemieux <pal@sandflow.com>
Date: Mon, 12 Jun 2017 07:51:05 -0700
Message-ID: <CAF_7JxCuaGwNjVeejqujbTOfLV3dkoaJg9YvZPLSc2QGoaK4cw@mail.gmail.com>
To: Thierry MICHEL <tmichel@w3.org>
Cc: W3C Public TTWG <public-tt@w3.org>
Hi Thierry,

Below are the proposed responses.

Best,

-- Pierre

> A-  Your comment on activeArea attribute

The WG clarified that specific behavior of the system is left
intentionally undefined (see latest Editor's Draft at [1]):

"""
Under normal circumstances, the entirety of the root container is
presented. However, under special circumstances, such as when the
related video object is cropped, a system can, for instance, use the
ittp:activeArea parameter to avoid cropping areas of the root
container that are intended to be visible to the viewer. The specific
behavior of the system is however left undefined intentionally: the
system can select a presentation mode appropriate to the display
shape, user preferences, etc. The ittp:activeArea is analogous to the
Active Format Description (AFD) metadata commonly used in broadcast
applications.
"""

A more detailed discussion is available at [2] and [3].

[1] http://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html
[2] https://github.com/w3c/imsc/issues/227
[3] https://github.com/w3c/imsc/issues/191

> B- Your comment on fillLineGap attribute

The WG has revised Figure 1 (see [1]) to better illustrate the line
gap filling algorithm, which "extends the background of each inline
area generated by descendant <span>s of the <p> element to the
before-edge and after-edge of its containing line area."

See also the discussion at [2].

[1] http://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html
[2] https://github.com/w3c/imsc/issues/228

On Fri, Jun 9, 2017 at 12:40 AM, Thierry MICHEL <tmichel@w3.org> wrote:
>
> Pierre,
>
> Here is the boiler plate to respond to the IMSC 1.0.1 comments
> (example here for ARIB)
> Note that I propose to request for approuval before 18 June 2017.
>
> Thierry
>
> =====================================================================
> The Timed Text Working Group has reviewed the comments you sent [1] on the
> Wide Review Working Draft [2] of IMSC 1.0.1 published on 22 March 2017.
> Thank you for having taken the time to review the document and to send us
> comments.
>
> The Working Group's response to your comments is included below.
>
> Please review it carefully and let us know by email at
> public-tt@w3.org?subject=%5Bimsc%5D if you agree with it or not before 18
> June 2017. In case of disagreement, you are requested to provide a specific
> solution for or a path to a consensus with the Working Group. If such a
> consensus cannot be achieved, you will be given the opportunity to raise a
> formal objection which will then be reviewed by the Director during the
> transition of this document to the next stage in the W3C Recommendation
> Track.
>
> Sincerely,
>
> For the Timed Text Working Group,
> Thierry Michel
> W3C Staff Contact
>
> 1. https://lists.w3.org/Archives/Public/public-tt/2017May/0018.html
> 2. https://www.w3.org/TR/2017/WD-ttml-imsc1.0.1-20170322/
>
> ----------------------------------------
> Working Group's response to your comments
> ----------------------------------------
>
> A-  Your comment on activeArea attribute
>
> @@ WG's response to be added here @@
>
>
> B- Your comment on fillLineGap attribute
> @@ WG's response to be added here @@
>
>
> ========================================================================
Received on Monday, 12 June 2017 14:51:59 UTC

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