- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 5 Feb 2015 16:14:35 +0000
- To: Timed Text Working Group <public-tt@w3.org>
- Message-ID: <D0F94737.1A964%nigel.megitt@bbc.co.uk>
Thanks all for attending today's meeting. Minutes in HTML format are at: http://www.w3.org/2015/02/05-tt-minutes.html
In text format:
[1]W3C
[1] http://www.w3.org/
Timed Text Working Group Teleconference
05 Feb 2015
See also: [2]IRC log
[2] http://www.w3.org/2015/02/05-tt-irc
Attendees
Present
nigel, jdsmith, glenn, pal, tmichel
Regrets
atai, Frans
Chair
nigel
Scribe
nigel
Contents
* [3]Topics
1. [4]This meeting
2. [5]Liaisons
3. [6]Face 2 Face
4. [7]TTML2 FPWD publication
5. [8]IMSC Test Suite
6. [9]Issues
* [10]Summary of Action Items
__________________________________________________________
<trackbot> Date: 05 February 2015
<scribe> chair: nigel
<scribe> scribeNick: nigel
This meeting
nigel: Add to the agenda the DVB liaison message
... AOB?
group: No AOB
nigel: Also add TTML2 FPWD publication
... I suggest we do external stuff first (liaisons), the F2F,
then the FPWD publication
Liaisons
action-360?
<trackbot> action-360 -- Nigel Megitt to Send liaison request
on behalf of w3c ttwg to arib -- due 2014-12-18 --
PENDINGREVIEW
<trackbot>
[11]http://www.w3.org/AudioVideo/TT/tracker/actions/360
[11] http://www.w3.org/AudioVideo/TT/tracker/actions/360
close action-360
<trackbot> Closed action-360.
nigel: We've also had a liaison from DVB
[12]https://lists.w3.org/Archives/Public/public-tt/2015Jan/0072
.html
[12] https://lists.w3.org/Archives/Public/public-tt/2015Jan/0072.html
nigel: Goes through the message from DVB
... It seems that in the context of IMSC 1 we can acknowledge
this and offer continuing assistance.
... However there's a constituency in this WG who may wish to
make additional comments
... regarding WebVTT. So I propose we do not draft a response
immediately but raise this
... possibility on the reflector.
pal: I think we just need to thank DVB for the message.
nigel: I sent a simple acknowledgement of receipt - I'll
forward it to the member list.
... It's now at
[13]https://lists.w3.org/Archives/Member/member-tt/2015Feb/0001
.html
[13] https://lists.w3.org/Archives/Member/member-tt/2015Feb/0001.html
pal: I think that's sufficient.
nigel: Apologies for not sending that to the member reflector
earlier.
action-369?
<trackbot> action-369 -- Nigel Megitt to Collate smpte issues
and draft dispositions and circulate on reflector as a
precursor to a liaison -- due 2015-02-05 -- OPEN
<trackbot>
[14]http://www.w3.org/AudioVideo/TT/tracker/actions/369
[14] http://www.w3.org/AudioVideo/TT/tracker/actions/369
This is a work in progress - I'm going through it at the
moment.
nigel: I've collated the issues together and need to go through
TTML2 to derive the draft
... dispositions.
pal: We should respond to the member comments about the DECE
tests, which don't include
... the expected results, so a brief message asking for those
test criteria would be worthwhile.
nigel: Thanks pal for the draft words - I'm happy to send that
as is, to our liaison, who is Mike.
<scribe> ACTION: nigel Send DECE liaison asking for IMSC 1 test
criteria [recorded in
[15]http://www.w3.org/2015/02/05-tt-minutes.html#action01]
<trackbot> Created ACTION-370 - Send dece liaison asking for
imsc 1 test criteria [on Nigel Megitt - due 2015-02-12].
Face 2 Face
nigel: We discussed this last week - any updates on hosting?
jdsmith: I'm discussing this still and am optimistic. 9th and
10th April?
nigel: Yes. those are the dates.
glenn: I have a tentative approval to look into it by a funding
source so I need to contact
... a couple of hotels in Vegas and get a price on a room for
budget assessment.
... I'll do that today or tomorrow.
jdsmith: If I were hosting it would be in Redmond.
nigel: It seems a bit more practical for some folk if we are in
Vegas so I propose to make that
... the primary location, and if it isn't available then we
take Jerry's kind offer secondarily.
jdsmith: Sure. I'll line it up just in case.
nigel: Just checking, is it okay for a non-member org to
sponsor this?
tmichel: I don't see why it would be a problem - I'll get back
to you in a few days.
nigel: Is Netflix a member of W3C?
several: yes they are
<scribe> ACTION: nigel Create a meeting page on the wiki for
the F2F [recorded in
[16]http://www.w3.org/2015/02/05-tt-minutes.html#action02]
<trackbot> Created ACTION-371 - Create a meeting page on the
wiki for the f2f [on Nigel Megitt - due 2015-02-12].
TTML2 FPWD publication
nigel: Glenn has provided a zip with the FPWD in. It has some
link errors to rectify.
glenn: I'll process those this morning, and then provide a
publishable version suitable for
... publication on the 10th.
tmichel: There are also namespace issues as well as the broken
links. Maybe put some special
... placeholder text in for the namespace?
glenn: I'll handle that - it should be easy enough. Just a
reminder - we're not changing the
... namespace for TTML2. It's the same as TTML1. So we may not
need to do anything there.
tmichel: Thank you. Apart from that the publication request is
ready to go as soon as I receive
... the edited draft. So send it to me by email as an
attachment or something like that.
glenn: okay.
IMSC Test Suite
pal: I think the next step is to request the additional
information from DECE and then I think
... it will be substantially complete, so maybe we can discuss
how to reach out more formally
... to other organisations to suggest that they come and try
it. It would be good to wait for the
... extra information from DECE.
Issues
issue-210?
<trackbot> issue-210 -- The values for alpha in rgba() don't
correspond to CSS3 Color definitions -- pending review
<trackbot>
[17]http://www.w3.org/AudioVideo/TT/tracker/issues/210
[17] http://www.w3.org/AudioVideo/TT/tracker/issues/210
glenn: We did the RGBA values before CSS3 color was finalised -
this has to do with the alpha
... values. When CSS got around to doing RGBA they used 0-255
values for alpha, which is different.
... I propose to close this without action because this can be
dealt with as part of the process
... to map to HTML/CSS. It's worth emphasising the difference
in the text to make authors and
... users aware of it.
nigel: Is it in the text now?
glenn: There's no note that emphasises the difference. I could
add that easily enough.
nigel: I agree it's helpful to put that in.
reopen issue-210
<trackbot> Re-opened issue-210.
issue-210: [meeting 2015-02-05] Resolution is to add an
editorial note to readers highlighting the difference in scale
of alpha value.
<trackbot> Notes added to issue-210 The values for alpha in
rgba() don't correspond to CSS3 Color definitions.
issue-224?
<trackbot> issue-224 -- Support text placement in 3D coordinate
spaces (not zIndex compositing). -- pending review
<trackbot>
[18]http://www.w3.org/AudioVideo/TT/tracker/issues/224
[18] http://www.w3.org/AudioVideo/TT/tracker/issues/224
glenn: It's my intention to update the tts:disparity to permit
negative values now.
nigel: Negative values make the image appear further away.
pal: That's correct - it has to be used sparingly though for
viewer comfort. To be clear, I'd look
... at the SMPTE spec which is consistent with the CEA spec
too.
nigel: It's also consistent in sign with the ETSI spec.
issue-224: [meeting 2015-02-05] Needs to support negative
values.
<trackbot> Notes added to issue-224 Support text placement in
3D coordinate spaces (not zIndex compositing)..
reopen issue-224
<trackbot> Re-opened issue-224.
issue-283?
<trackbot> issue-283 -- Deterministic text wrapping and
presentation -- pending review
<trackbot>
[19]http://www.w3.org/AudioVideo/TT/tracker/issues/283
[19] http://www.w3.org/AudioVideo/TT/tracker/issues/283
nigel: Glenn's proposal is that the option of downloadable
fonts gets us as far as we can along
... this path. I don't have any further proposals.
glenn: I noticed that there's a notice from pal from Nov 2013
to add informative text on controlling
... line breaks. I didn't notice that before. Is there any
specific wording?
pal: I can imagine that the wording should be something along
the lines that line breaks
... should be manually inserted with <br>s to achieve the
desired expectation?
nigel: If you set tts:wrap="noWrap" then it's true that this
defines the line breaks completely.
glenn: I'm not averse to adding a note here.
pal: So maybe that note isn't so useful because of that.
nigel: From my perspective it would be worth highlighting that
fonts are helpful but not the
... whole story. The author might want to leave some extra
margin for safety to ensure that the
... region is big enough to hold the text as the author
intended it to be displayed.
... This is regardless of the use of automatic or manual line
breaks.
glenn: I can imagine adding a note to the section that
describes UAX14 wrapping.
... It's §11.3.2.
... "Line Layout". We could add a note under that, for
authorial techniques for dealing with line
... breaks.
nigel: I think that's a good idea - it's helpful to provide
information to minimise the impact of
... undefined implementation algorithms.
issue-283: [meeting 2015-02-05] Resolution: add an editorial
note to guide authors and implementors to §11.3.2 Line Layout.
<trackbot> Notes added to issue-283 Deterministic text wrapping
and presentation.
reopen issue-283
<trackbot> Re-opened issue-283.
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>
[20]http://www.w3.org/AudioVideo/TT/tracker/issues/289
[20] http://www.w3.org/AudioVideo/TT/tracker/issues/289
glenn: For both this one and issue-290 I added a ttm:item name
that are in the current draft for review.
... It was my intention that those metadata items will address
this issue.
... Also, it's somewhat related to the new ttp:parameter called
storageAspectRatio so they could
... be viewed as related and some additional text may be needed
to both places in the document
... to explain why both exist and how they relate to each other
and what the usage is.
... The format doesn't explain the value syntax - that's tbd.
nigel: That holds it up though - we need that to complete the
issue.
glenn: We have an Editorial Note for this so that's not needed.
nigel: I'm happy with the process overhead of keeping the issue
open
... I think there's a review comment on this that the syntax is
important - to do.
... Thanks all, have a good week until we meet again, same time
next week. [adjourns meeting]
Summary of Action Items
[NEW] ACTION: nigel Create a meeting page on the wiki for the
F2F [recorded in
[21]http://www.w3.org/2015/02/05-tt-minutes.html#action02]
[NEW] ACTION: nigel Send DECE liaison asking for IMSC 1 test
criteria [recorded in
[22]http://www.w3.org/2015/02/05-tt-minutes.html#action01]
[End of minutes]
__________________________________________________________
Minutes formatted by David Booth's [23]scribe.perl version
1.140 ([24]CVS log)
$Date: 2015-02-05 16:13:22 $
[23] http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm
[24] http://dev.w3.org/cvsweb/2002/scribe/
Received on Thursday, 5 February 2015 16:15:09 UTC