- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 20 Aug 2015 15:10:04 +0000
- To: Timed Text Working Group <public-tt@w3.org>
- Message-ID: <D1FBAC2E.25E23%nigel.megitt@bbc.co.uk>
Thanks all for attending today's meeting. Minutes can be found in HTML format at http://www.w3.org/2015/08/20-tt-minutes.html
In text format:
[1]W3C
[1] http://www.w3.org/
Timed Text Working Group Teleconference
20 Aug 2015
See also: [2]IRC log
[2] http://www.w3.org/2015/08/20-tt-irc
Attendees
Present
Thierry, nigel, atai, mike, courtney
Regrets
pal, frans
Chair
nigel
Scribe
nigel
Contents
* [3]Topics
1. [4]This meeting
2. [5]Action Items
3. [6]ATSC Liaison
4. [7]HTMLCue Proposal
5. [8]Unicode CLDR proposal
6. [9]Issues
7. [10]TTML2 Editorial Actions
8. [11]TPAC 2015
9. [12]AOB
* [13]Summary of Action Items
__________________________________________________________
<trackbot> Date: 20 August 2015
<scribe> scribe: nigel
This meeting
nigel: We are adding ATSC liaison to the agenda as requested.
... Any other business?
group: no other business
nigel: Looking ahead, I'm going to have difficulty meeting on
Thursday 10th. Will anyone else have problems?
atai: Yes, I won't be able to join on that day.
nigel: We can leave it scheduled but dependent on members
wishing to attend and join, or cancel that one if need be.
Action Items
action-414?
<trackbot> action-414 -- Nigel Megitt to Add unicode liaison to
weekly meeting agenda -- due 2015-08-20 -- PENDINGREVIEW
<trackbot>
[14]http://www.w3.org/AudioVideo/TT/tracker/actions/414
[14] http://www.w3.org/AudioVideo/TT/tracker/actions/414
close action-414
<trackbot> Closed action-414.
ATSC Liaison
[15]https://lists.w3.org/Archives/Member/member-tt/2015Aug/0002
.html
[15] https://lists.w3.org/Archives/Member/member-tt/2015Aug/0002.html
nigel: We received this liaison from ATSC. Would anyone like to
take us through it?
mike: ATSC is heading down the path of using IMSC 1 for its
next generation TV. A member
... has proposed support for extensions for colorGamut and 3D
disparity.
... disparity is already in TTML2, but there's nothing I'm
aware of on HDR or wide color gamut
... in this group. The proposal is to get us to think about it
more than anything else.
... There are 2 specific proposals for pulling those features
into IMSC 1.
... There was a lively discussion on the reflector about color
gamut and what it might be useful
... for. I think that's down to, not so much that an author
would want to use a wide color gamut,
... but that it would help implementations if the text
signalled colors in a wide color gamut.
... That was more to get W3C TTWG thinking about the issue,
which was successful based on
... the email exchange. The rest is to do with logistics of
timing and in what form the requests
... might appear in the future.
nigel: I had a conversation with Thierry and Pierre about the
logistics side. Pierre and I
... concluded that the best thing for IMSC right now given the
process state that its in is to
... keep it closed to new features, but to add them into the
scope of TTML2 and IMSC 2.
mike: Any thoughts on the schedule for all this work?
nigel: It's clear that we're already behind relative to our
intended timescale on TTML2. If we
... want to speed things up then we need more input from
members other than Glenn. IMSC 2
... is planned for as soon as possible after TTML2. I wouldn't
be surprised given the current
... state if that falls into 2016, it's hard to say exactly
when.
mike: With my TTWG hat on, I agree that not delaying IMSC 1 is
the right answer, though it
... isn't necessarily what ATSC wants to hear. What's the
timescale for publishing IMSC 1?
nigel: That's entirely dependent on implementation work on IMSC
1. We can't move on until
... we have met the exit criteria for the CR, which requires
implementation work.
mike: It sounds as though we need some feedback from pierre on
that.
nigel: Yes, he's got the best view right now.
mike: We possibly need dave to come in on the colour mapping
question.
nigel: It's not clear to me that there's any specification work
missing that we should take on.
... I have the impression that the colour spaces are all well
defined and the semantic in TTML
... is also clear.
mike: We may need some additional metadata to indicate where
the sRGB 8 bits live in the
... 12 bit value space.
nigel: I'd like to see a proposal for that on the email
reflector - I'm a little sceptical right now.
mike: Yes, I'll continue the email thread. I'm also happy to
start preparing a liaison response for
... the liaison, to be sent back to ATSC.
nigel: Pierre also volunteered to assist with that so between
you two we should be able to get
... something together. The key points are that we won't
include the features in IMSC 1 but
... will consider them for IMSC 2. For the color gamut question
we need to have more discussion
... and conclude on the issue before we respond.
HTMLCue Proposal
Courtney: I talked to the webkit team and they said they have
no plans to add support for
... anything but WebVTT.
atai: There's nothing more from me on this - we just need to
think how to proceed.
... Nigel made a proposal to make it more concrete as to what
we should propose. We need
... to decide if we need to include that.
nigel: That's right. I had a think about this and a look at the
dash.js work, and the simple
... approach is simply to replace the html content of a target
div element. That would be my
... baseline proposal, since it appears to work.
atai: I wonder if we could get stuck in detail if we discuss
this.
... Getting a general feeling about if people are willing to
implement this is more important.
<mike> I need to get to another meeting. thanks for the time on
the ATSC liaison. hear you next week.
<tmichel> [16]http://www.w3.org/2001/11/StdLiaison#main
[16] http://www.w3.org/2001/11/StdLiaison#main
nigel: Looking back at last week's minutes, there were 3
actions, Courtney's, mine and Thierry was going to check about
WHATWG.
tmichel: There's actually no liaison with WHATWG, so I
contacted Michael Smith of the HTML WG
... to discuss how we might contact WHATWG. He suggested the
best way might be to post
... to the public email address on this issue:
<tmichel> whatwg@whatwg.org
<tmichel> public mailing list for the WHATWG.
tmichel: And he said that if we needed he could also help. He's
not the formal liaison guy but
... he knows those guys and has been working with WHATWG for
many years.
atai: I can do that, but it would be on my own - it would be
better from TTWG.
tmichel: I agree it would be better to send it on behalf of
TTWG to add leverage.
nigel: Okay, I'm happy to do that then as chair.
... The draft text we have now is:
[17]https://lists.w3.org/Archives/Public/public-tt/2015Aug/0009
.html
... Just rereading that, imagining WHATWG receiving it, I guess
it looks okay. I assume they
... know what TPAC is.
[17] https://lists.w3.org/Archives/Public/public-tt/2015Aug/0009.html
<tmichel> The people from who I would think you’d want to get
most feedback on this
<tmichel> particular proposal are Philip Jägenstedt
(Opera/Blink), Silvia Pfeiffer,
<tmichel> and Eric Carlson & Jer Noble (from Apple).
<tmichel> >
nigel: I'm happy to take an action to edit the draft and share
with those people for initial
... input prior to posting to the public WHATWG list.
<tmichel> IanHickson right would not be the most productive,
especially since at the
<tmichel> moment, he’s working on other things that don’t have
much to to with the
<tmichel> HTML spec.
<scribe> ACTION: tmichel Send nigel email addresses of HTMLCue
proposal reviewers [recorded in
[18]http://www.w3.org/2015/08/20-tt-minutes.html#action01]
<trackbot> Created ACTION-415 - Send nigel email addresses of
htmlcue proposal reviewers [on Thierry Michel - due
2015-08-27].
<scribe> ACTION: nigel Edit proposal and send to HTMLCue
proposal reviewers as listed by tmichel, following Action-415
[recorded in
[19]http://www.w3.org/2015/08/20-tt-minutes.html#action02]
<trackbot> Created ACTION-416 - Edit proposal and send to
htmlcue proposal reviewers as listed by tmichel, following
action-415 [on Nigel Megitt - due 2015-08-27].
nigel: If all the feedback is positive I'll go ahead and send
to WHATWG, otherwise I'll bring it
... back to this group for further discussion.
... I'll CC interested folk too so you don't lose track of the
discussion.
Unicode CLDR proposal
nigel: I've not had any response from Mark Davis yet, so as per
our discussion last week
... I will create an issue ticket with Unicode, containing the
proposal.
<scribe> ACTION: nigel Create ticket with Unicode for CLDR
proposal, or add to existing one. [recorded in
[20]http://www.w3.org/2015/08/20-tt-minutes.html#action03]
<trackbot> Created ACTION-417 - Create ticket with unicode for
cldr proposal, or add to existing one. [on Nigel Megitt - due
2015-08-27].
Issues
issue-402?
<trackbot> issue-402 -- The permitted delimiters for two value
attributes like cellResolution and frameRateMultiplier are
undefined -- closed
<trackbot>
[21]http://www.w3.org/AudioVideo/TT/tracker/issues/402
[21] http://www.w3.org/AudioVideo/TT/tracker/issues/402
nigel: I raised this in error and it's already closed - thanks
to Glenn for putting me right.
issue-403?
<trackbot> issue-403 -- The ordering of features in Appendix D
differs from that in Appendix F -- raised
<trackbot>
[22]http://www.w3.org/AudioVideo/TT/tracker/issues/403
[22] http://www.w3.org/AudioVideo/TT/tracker/issues/403
reopen issue-403
<trackbot> Re-opened issue-403.
TTML2 Editorial Actions
nigel: There are now examples in the TTML2 ED for padding on
span and for textAlign on span.
TPAC 2015
nigel: Is there anything to add to the agenda, or does anyone
need any assistance with TPAC,
... e.g. with registration etc?
group: Nothing to add right now.
AOB
nigel: We've covered other business as planned already.
... Just one note - referencing the earlier mention of dash.js,
if anyone is interested in discussing
... implementation work in that area, EBU is hosting an open
session at IBC, as per the email
... sent earlier in the week.
... Thanks very much everyone. [Adjourns meeting]
Summary of Action Items
[NEW] ACTION: nigel Create ticket with Unicode for CLDR
proposal, or add to existing one. [recorded in
[23]http://www.w3.org/2015/08/20-tt-minutes.html#action03]
[NEW] ACTION: nigel Edit proposal and send to HTMLCue proposal
reviewers as listed by tmichel, following Action-415 [recorded
in [24]http://www.w3.org/2015/08/20-tt-minutes.html#action02]
[NEW] ACTION: tmichel Send nigel email addresses of HTMLCue
proposal reviewers [recorded in
[25]http://www.w3.org/2015/08/20-tt-minutes.html#action01]
[End of minutes]
__________________________________________________________
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Received on Thursday, 20 August 2015 15:10:35 UTC