- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 9 Jun 2016 15:10:00 +0000
- To: W3C Public TTWG <public-tt@w3.org>
- Message-ID: <D37F44B3.3D5E2%nigel.megitt@bbc.co.uk>
Thanks to those who attended today's TTWG meeting. Minutes can be found in HTML format at https://www.w3.org/2016/06/09-tt-minutes.html
We made one resolution in relation to our use of pull requests as described under the TTML agenda item:
RESOLUTION: Accept the proposed process as described in the agenda for a trial period of 3 months and then review it.
The review period for this resolution under our Decision Policy ends on 23rd June 2016.
In text format:
[1]W3C
[1] http://www.w3.org/
Timed Text Working Group Teleconference
09 Jun 2016
See also: [2]IRC log
[2] http://www.w3.org/2016/06/09-tt-irc
Attendees
Present
Andreas, Glenn, Nigel, Thierry, Mike(IRC_only)
Regrets
Frans
Chair
Nigel
Scribe
nigel
Contents
* [3]Topics
1. [4]This meeting
2. [5]Charter
3. [6]IMSC
4. [7]TTML1 & TTML2 issues, actions, PRs etc
5. [8]Profiles registry
6. [9]TPAC
* [10]Summary of Action Items
* [11]Summary of Resolutions
__________________________________________________________
<mike> regrets from me on audio - just lurking on IRC today
This meeting
<scribe> scribe: nigel
nigel: It's been a couple of weeks - shall we cover mainly
TTML?
... In AOB I'd like to mention a BBC submission also
... AOB?
group: No AOB.
nigel: I'm about to take a 2 week vacation. Would anyone like
to chair while I'm absent?
glenn: I may be able to, but need to confirm.
nigel: Okay, thanks - let's catch up on that later.
Charter
nigel: Since we last met our new Charter has been approved!
... [12]https://www.w3.org/2016/05/timed-text-charter.html
[12] https://www.w3.org/2016/05/timed-text-charter.html
<scribe> ACTION: tmichel Update TTWG home page to point to new
Charter [recorded in
[13]http://www.w3.org/2016/06/09-tt-minutes.html#action01]
[13] http://www.w3.org/2016/06/09-tt-minutes.html#action01]
<trackbot> Created ACTION-471 - Update ttwg home page to point
to new charter [on Thierry Michel - due 2016-06-16].
IMSC
nigel: I don't think we have any specific topics to mention for
IMSC today, but we did
... publish the press release, which has already begun some
conversations in industry.
TTML1 & TTML2 issues, actions, PRs etc
nigel: First can we cover the pull request process proposal?
... I think I've verified that all parties are happy with the
current proposal, as described
... in the agenda, to allow for early merge with labelling, and
a minimum 3 business days
... between opening a PR and merging it.
PROPOSAL: Accept the proposed process as described in the
agenda for a trial period of 3 months and then review it.
RESOLUTION: Accept the proposed process as described in the
agenda for a trial period of 3 months and then review it.
nigel: It's also worth noting that Glenn has described how this
works for TTML2 at
... [14]https://github.com/w3c/ttml2/blob/gh-pages/EDITING.md
... Thanks all for helping us get to this agreement.
... Let's move to Actions.
[14] https://github.com/w3c/ttml2/blob/gh-pages/EDITING.md
action-386?
<trackbot> action-386 -- Glenn Adams to Investigate whether
region style inheritance from tt is necessary given the ability
to redefine initial values -- due 2015-04-17 -- PENDINGREVIEW
<trackbot>
[15]http://www.w3.org/AudioVideo/TT/tracker/actions/386
[15] http://www.w3.org/AudioVideo/TT/tracker/actions/386
glenn: [describes comment in the action]. It is possible that
the two mechanisms overlap
... in some cases, but we don't have an issue to solve here.
... So that's the investigation, which fulfils the action.
nigel: What are the cases where it is desirable to use root
inheritance but not override the initial value on a inheritable
style?
glenn: It's an authorial decision and also to do with what is
efficient.
... I made some notes on this and found that for translating
into TTML in some cases it
... is better to use initial and in others to use root
inheritance. I'm not sure that we have
... enough implementation experience here either.
... I would like a concrete set of test sequences that verify
this. I wouldn't object to
... returning to this question again later as we get closer to
CR, to see what the TTPE and
... TTV implementation experience tells us. Originally the root
inheritance was intended
... to allow common inheritable styles for region elements.
... Later on we realised there was also a need to override
initial values when they are left
... to be implementation dependent like tts:color. Both of
those feature requests go back
... to an earlier list of change proposals and items listed in
those. So they had two
... different origins. That's how we got here. The implicit
proposal is to merge them
... together. It makes it a little more complicated to describe
in the spec that way. I have
... to admit that implementing and testing both is a little
more work. I'm not comfortable
... merging them at this point but I'd like to see where
implementation experience takes us.
close action-386
<trackbot> Closed action-386.
action-404?
<trackbot> action-404 -- Glenn Adams to Add note to issue 341
to reflect his current thinking -- due 2015-06-11 --
PENDINGREVIEW
<trackbot>
[16]http://www.w3.org/AudioVideo/TT/tracker/actions/404
[16] http://www.w3.org/AudioVideo/TT/tracker/actions/404
glenn: Issue-341 is a tracker issue, just to be clear.
issue-341?
<trackbot> issue-341 -- ambiguous definition for determination
of descendant region identifier -- open
<trackbot>
[17]http://www.w3.org/AudioVideo/TT/tracker/issues/341
[17] http://www.w3.org/AudioVideo/TT/tracker/issues/341
glenn: I need folk to look at and think about and respond to
this. We need to make a
... design choice. I have proposed a particular option out of
4.
[18]https://github.com/w3c/ttml1/issues/194
[18] https://github.com/w3c/ttml1/issues/194
nigel: There is no equivalent TTML2 issue.
... I think this relates also to the processing of implied
anonymous inline regions,
... where a proposal made was, rather then the current semantic
of creating a new
... anonymous region, that instead the currently selected
region would be modified if a
... region style attribute such as tts:origin were specified on
an element, e.g. a <p>.
<glenn> glenn: i'm not ready to concede this is a good or
useful idea, i.e., having an anonymous region somehow override
a region derived from an ancestor
nigel: Since I can't see an issue for this, I need to go back
and look and make sure there is one so we don't lose this.
<glenn> glenn: i think this will probably complicate processing
in a big way
nigel: My reasoning is that I *think* when people specify
origin or extent on a div or a p
... this is what they expect, to modify the current region and
retain all style settings.
<scribe> ACTION: nigel make sure there is a TTML2 issue for
considering adjustment of inline region semantics [recorded in
[19]http://www.w3.org/2016/06/09-tt-minutes.html#action02]
[19] http://www.w3.org/2016/06/09-tt-minutes.html#action02]
<trackbot> Created ACTION-472 - Make sure there is a ttml2
issue for considering adjustment of inline region semantics [on
Nigel Megitt - due 2016-06-16].
glenn: We need to figure out what we think should be right and
then figure out how badly that may break anything.
<tmichel> tmichel: no specific view
close action-404
<trackbot> Closed action-404.
action-458?
<trackbot> action-458 -- Glenn Adams to Create issue re: line
height calculation for inline -- due 2016-04-07 --
PENDINGREVIEW
<trackbot>
[20]http://www.w3.org/AudioVideo/TT/tracker/actions/458
[20] http://www.w3.org/AudioVideo/TT/tracker/actions/458
glenn: I created [21]https://github.com/w3c/ttml1/issues/212
[21] https://github.com/w3c/ttml1/issues/212
nigel: Thank you. Do we need an equivalent for TTML2?
glenn: Probably! Generally errata in TTML1 create an issue in
TTML2
... I'll go ahead and create an issue in TTML2 and cross
reference the TTML1 issue URL
close action-458
<trackbot> Closed action-458.
nigel: I'd like to mention the submission that I made just at
the start of this meeting.
[22]https://lists.w3.org/Archives/Public/public-tt/2016Jun/0003
.html
[22] https://lists.w3.org/Archives/Public/public-tt/2016Jun/0003.html
nigel: This comes partly out of work done in another group,
where we were considering
... the case that TTML is used for subtitles or captions over
video in one video aspect ratio
... when the video is displayed on a different aspect ratio and
partially cropped as a result.
<glenn> created github issue for ttml2
[23]https://github.com/w3c/ttml2/issues/163 related to ttml1
issue 212; semantics of line height, inline height
[23] https://github.com/w3c/ttml2/issues/163
glenn: Another issue that may be related is that there's some
desire to specify positioning
... of subtitles outside the root container region, or have it
be larger than a video frame.
... For example with letter box where you want the subtitles to
appear beneath or above
... content in black bars.
Profiles registry
action-470?
<trackbot> action-470 -- Nigel Megitt to Update the
publications wiki page for the profile registry -- due
2016-05-26 -- PENDINGREVIEW
<trackbot>
[24]http://www.w3.org/AudioVideo/TT/tracker/actions/470
[24] http://www.w3.org/AudioVideo/TT/tracker/actions/470
nigel: I did that.
close action-470
<trackbot> Closed action-470.
nigel: We also have action-468 and action-469 on plh
tmichel: I have no update but will look into it.
nigel: There's also a useful process point to note, which is
that the W3C pull request
... checker (ash-nazg) now has an option for marking pull
requests as non-substantive,
... and this has been used on
[25]https://github.com/w3c/tt-profile-registry/pull/20
... which means that the Editor can now merge this safely
without worrying about IPR.
[25] https://github.com/w3c/tt-profile-registry/pull/20
TPAC
glenn: Registration is now open.
nigel: Thanks for the reminder!
[26]https://www.w3.org/2016/09/TPAC/
... Registration:
[27]https://www.w3.org/2002/09/wbs/35125/TPAC2016/?login
... Okay. Thanks everyone, I'll be back here in 3 weeks!
[adjourns meeting]
[26] https://www.w3.org/2016/09/TPAC/
[27] https://www.w3.org/2002/09/wbs/35125/TPAC2016/?login
Summary of Action Items
[NEW] ACTION: nigel make sure there is a TTML2 issue for
considering adjustment of inline region semantics [recorded in
[28]http://www.w3.org/2016/06/09-tt-minutes.html#action02]
[NEW] ACTION: tmichel Update TTWG home page to point to new
Charter [recorded in
[29]http://www.w3.org/2016/06/09-tt-minutes.html#action01]
[28] http://www.w3.org/2016/06/09-tt-minutes.html#action02
[29] http://www.w3.org/2016/06/09-tt-minutes.html#action01
Summary of Resolutions
1. [30]Accept the proposed process as described in the agenda
for a trial period of 3 months and then review it.
[End of minutes]
__________________________________________________________
Minutes formatted by David Booth's [31]scribe.perl version
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[31] http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm
[32] http://dev.w3.org/cvsweb/2002/scribe/
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Received on Thursday, 9 June 2016 15:10:26 UTC