- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 22 Jan 2015 16:01:30 +0000
- To: Timed Text Working Group <public-tt@w3.org>
- Message-ID: <D0E6CE64.197DE%nigel.megitt@bbc.co.uk>
Thanks all for attending today's meeting. Minutes in HTML format are at: http://www.w3.org/2015/01/22-tt-minutes.html
Please keep the FPWD snapshot review comments on TTML2 coming in on the reflector in advance of next week's meeting.
Minutes in text format:
[1]W3C
[1] http://www.w3.org/
Timed Text Working Group Teleconference
22 Jan 2015
See also: [2]IRC log
[2] http://www.w3.org/2015/01/22-tt-irc
Attendees
Present
nigel, jdsmith, Frans-EBU, pal, andreas, tmichel
Regrets
glenn
Chair
nigel
Scribe
nigel
Contents
* [3]Topics
1. [4]This meeting
2. [5]Action Items
3. [6]IMSC Test Suite
4. [7]Issues
5. [8]AOB
* [9]Summary of Action Items
__________________________________________________________
<trackbot> Date: 22 January 2015
<scribe> scribeNick: nigel
This meeting
nigel: I've updated the TTML2 timeline - see the agenda.
<scribe> ACTION: pal Update publication timeline diagram
[recorded in
[10]http://www.w3.org/2015/01/22-tt-minutes.html#action01]
<trackbot> Created ACTION-368 - Update publication timeline
diagram [on Pierre-Anthony Lemieux - due 2015-01-29].
Action Items
action-363?
<trackbot> action-363 -- Nigel Megitt to Format and send itu-r
liaison response -- due 2015-01-15 -- PENDINGREVIEW
<trackbot>
[11]http://www.w3.org/AudioVideo/TT/tracker/actions/363
[11] http://www.w3.org/AudioVideo/TT/tracker/actions/363
close action-363
<trackbot> Closed action-363.
nigel: I sent this to ITU-R and got an acknowledgment back.
Thanks all for contributions.
action-366
<trackbot> action-366 -- Nigel Megitt to Review change proposal
14 in the light of closure of issue-10. -- due 2015-01-22 --
PENDINGREVIEW
<trackbot>
[12]http://www.w3.org/AudioVideo/TT/tracker/actions/366
[12] http://www.w3.org/AudioVideo/TT/tracker/actions/366
issue-10?
<trackbot> issue-10 -- Allowing pointers to pre-rendered audio
forms of elements -- closed
<trackbot>
[13]http://www.w3.org/AudioVideo/TT/tracker/issues/10
[13] http://www.w3.org/AudioVideo/TT/tracker/issues/10
nigel: The TTML2 implementation meets the needs of this CP for
now, so I closed it.
close action-366
<trackbot> Closed action-366.
action-367?
<trackbot> action-367 -- Nigel Megitt to Review change proposal
27 in the light of closure of issue-303. -- due 2015-01-22 --
PENDINGREVIEW
<trackbot>
[14]http://www.w3.org/AudioVideo/TT/tracker/actions/367
[14] http://www.w3.org/AudioVideo/TT/tracker/actions/367
issue-303?
<trackbot> issue-303 -- Permit HTML-style <a> elements to
contain href links -- closed
<trackbot>
[15]http://www.w3.org/AudioVideo/TT/tracker/issues/303
[15] http://www.w3.org/AudioVideo/TT/tracker/issues/303
nigel: The TTML2 implementation meets the needs of this CP for
now, so I closed it.
close action-367
<trackbot> Closed action-367.
action-360?
<trackbot> action-360 -- Nigel Megitt to Send liaison request
on behalf of w3c ttwg to arib -- due 2014-12-18 -- OPEN
<trackbot>
[16]http://www.w3.org/AudioVideo/TT/tracker/actions/360
[16] http://www.w3.org/AudioVideo/TT/tracker/actions/360
nigel: I've prepared an update to the liaison, waiting for
Daniel D of W3S to approve.
... And I've worked through how to send this, in conjunction
with the contact from ARIB.
action-365?
<trackbot> action-365 -- Pierre-Anthony Lemieux to Review
change proposal 21 in the light of closure of issue-229. -- due
2015-01-22 -- OPEN
<trackbot>
[17]http://www.w3.org/AudioVideo/TT/tracker/actions/365
[17] http://www.w3.org/AudioVideo/TT/tracker/actions/365
pal: I sent an email to the reflector about this, waiting to
hear back from the Editor on this.
... So leave open for now.
... I saw that nigel had some comments on the approach to ruby,
but the thread went quiet,
... so I guess you're happy with it?
issue-228?
<trackbot> issue-228 -- Ruby text support -- closed
<trackbot>
[18]http://www.w3.org/AudioVideo/TT/tracker/issues/228
[18] http://www.w3.org/AudioVideo/TT/tracker/issues/228
nigel: This one's closed - I don't expect or need any further
changes.
pal: What would the alternative be - to introduce new content
elements?
nigel: Exactly - that's what Glenn wants to avoid.
IMSC Test Suite
pal: No substantial update this week - work in progress here.
Issues
issue-366?
<trackbot> issue-366 -- xml:id uniqueness needs to be broken
for some uses of condition -- raised
<trackbot>
[19]http://www.w3.org/AudioVideo/TT/tracker/issues/366
[19] http://www.w3.org/AudioVideo/TT/tracker/issues/366
reopen issue-366
<trackbot> Re-opened issue-366.
nigel: I expect this to be resolved editorially, by an edit to
the style set processing, and by the
... documentation of the processing model.
... And by allowing IDREFS on region attributes.
pal: So there's a way to achieve what you wanted without
duplicating xml:id values?
nigel: Yes, exactly.
issue-224?
<trackbot> issue-224 -- Support text placement in 3D coordinate
spaces (not zIndex compositing). -- pending review
<trackbot>
[20]http://www.w3.org/AudioVideo/TT/tracker/issues/224
[20] http://www.w3.org/AudioVideo/TT/tracker/issues/224
nigel: Glenn and I are still discussing this one.
... I wonder how 3D images should be handled?
pal: It's the same as text - it's the same image, but rendered
at different horizontal positions.
... That's for stereoscopic rendering. This approach is limited
to stereoscopic rendering.
issue-243?
<trackbot> issue-243 -- smpte:information (source material
information) -- pending review
<trackbot>
[21]http://www.w3.org/AudioVideo/TT/tracker/issues/243
[21] http://www.w3.org/AudioVideo/TT/tracker/issues/243
pal: I think we've covered this before - there's an Editor's
note on this, but the definition isn't
... yet synonymous with the SMPTE definitions. There's more
work to do to define the syntax
... of all the named items.
issue-243: Further definition of the syntax is marked as an
Editor's Note - this issue depends on completion of that task.
<trackbot> Notes added to issue-243 smpte:information (source
material information).
reopen issue-243
<trackbot> Re-opened issue-243.
issue-278?
<trackbot> issue-278 -- Tightening schema support for foreign
vocabulary. -- pending review
<trackbot>
[22]http://www.w3.org/AudioVideo/TT/tracker/issues/278
[22] http://www.w3.org/AudioVideo/TT/tracker/issues/278
issue-289?
<trackbot> issue-289 -- For TTML created for overlay on top of
video, signal the aspect ratio of the video the TTML was
created for -- pending review
<trackbot>
[23]http://www.w3.org/AudioVideo/TT/tracker/issues/289
[23] http://www.w3.org/AudioVideo/TT/tracker/issues/289
atai: With XML Schema 1.0 I think there's probably no way to be
more restrictive, especially
... for attributes.
... That's why Glenn's TTV tool does these additional checks.
nigel: Is it the general view that we do partial XSD validation
and on top of that use special
... software?
pal: I think that's the only way. The right way to achieve
complete coverage is with reference
... code or something similar, ultimately.
close issue-278
<trackbot> Closed issue-278.
issue-289?
<trackbot> issue-289 -- For TTML created for overlay on top of
video, signal the aspect ratio of the video the TTML was
created for -- pending review
<trackbot>
[24]http://www.w3.org/AudioVideo/TT/tracker/issues/289
[24] http://www.w3.org/AudioVideo/TT/tracker/issues/289
nigel: He has a targetAspectRatio, but it's hard to tell
exactly what the solution was here.
pal: I think aspect ratio is somewhat in flux.
nigel: I think the same goes for active format descriptor and
intendedTargetBarData
atai: I need to review this more.
issue-364?
<trackbot> issue-364 -- Relax constraint between the extents of
the root container and the dimensions of the related video
object frame -- pending review
<trackbot>
[25]http://www.w3.org/AudioVideo/TT/tracker/issues/364
[25] http://www.w3.org/AudioVideo/TT/tracker/issues/364
pal: The CR version of IMSC 1 did not permit the renderer to
scale images, forcing the creation
... of multiple versions of the same image profile document,
one for each target related video
... object resolution. That makes the job of the renderer
easier, but the feedback, including
... from Simon Hailes, is that scaling by renderers isn't a big
issue, but having a large number of
... images is more of a problem.
... Formally we can respond to Simon with this. I'll generate
some additional test cases to cover this.
... The edit was deceptively simple: The sentence tying the
tts:extent to the video object's
... size was removed.
... Also the following sentence was removed: "ittp:aspectRatio
shall not be present if tts:extent is present"
... Now you can specify aspect ratio and tts:extent.
... And the scaling rules still apply that say that the
rendering plane is as big as it can be within
... the video object.
jdsmith: I'd like to have a look at the complexity of scaling
images.
AOB
pal: I see that there's been reflector discussion with the
gentleman in Croatia.
nigel: I don't think there's anything more we can do there -
we've provided all the help we can.
... It seems to be an implementation issue.
... Thanks everyone - we're back for an hour next week.
[adjourns meeting]
Summary of Action Items
[NEW] ACTION: pal Update publication timeline diagram [recorded
in [26]http://www.w3.org/2015/01/22-tt-minutes.html#action01]
[End of minutes]
__________________________________________________________
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Received on Thursday, 22 January 2015 16:02:15 UTC