See also: IRC log
<trackbot> Date: 05 February 2015
<scribe> chair: nigel
<scribe> scribeNick: nigel
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
action-360?
<trackbot> action-360 -- Nigel Megitt to Send liaison request on behalf of w3c ttwg to arib -- due 2014-12-18 -- PENDINGREVIEW
<trackbot> 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
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
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> 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 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].
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 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].
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.
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.
issue-210?
<trackbot> issue-210 -- The values for alpha in rgba() don't correspond to CSS3 Color definitions -- pending review
<trackbot> 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> 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> 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> 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]