19-mediafrag-minutes.html
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<title>Media Fragments Working Group Teleconference -- 19 Jan
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<h1>Media Fragments Working Group Teleconference</h1>
<h2>19 Jan 2011</h2>
<p><a href=
'http://lists.w3.org/Archives/Public/public-media-fragment/2011Jan/0027.html'>
Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2011/01/19-mediafrag-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>raphael, Yves, +329331aaaa, Erik, Davy, +31.20.592.aabb,
Jack</dd>
<dt>Regrets</dt>
<dd>Thomas, Silvia</dd>
<dt>Chair</dt>
<dd>Erik, Raphael</dd>
<dt>Scribe</dt>
<dd>yves</dd>
</dl>
</div>
<h2>Contents</h2>
<ul>
<li>
<a href="#agenda">Topics</a>
<ol>
<li><a href="#item01">1. Admin</a></li>
<li><a href="#item02">spec</a></li>
<li><a href="#item03">HTML WG liaison</a></li>
<li><a href="#item04">Implementation</a></li>
<li><a href="#item05">Open issues</a></li>
<li><a href="#item06">test cases</a></li>
<li><a href="#item07">AOB?</a></li>
</ol>
</li>
<li><a href="#ActionSummary">Summary of Action Items</a></li>
</ul>
<hr />
<div class="meeting">
<p class='phone'></p>
<p class='phone'></p>
<p class='irc'><<cite>trackbot</cite>> Date: 19 January
2011</p>
<p class='irc'><<cite>raphael</cite>> Regets: Thomas,
Silvia</p>
<h3 id="item01">1. Admin</h3>
<p class='phone'>damn!</p>
<p class='irc'><<cite>raphael</cite>> scribe: yves</p>
<p class='irc'><<cite>raphael</cite>> scribenick:
Yves</p>
<p class='phone'>approval of last week minutes</p>
<p class='irc'><<cite>raphael</cite>> +1</p>
<p class='irc'><<cite>Yves</cite>> +1</p>
<p class='irc'><<cite>davy</cite>> +1</p>
<p class='phone'><strong class='resolution'>RESOLUTION: minutes
approved <a href=
"http://www.w3.org/2011/01/12-mediafrag-minutes.html">http://www.w3.org/2011/01/12-mediafrag-minutes.html</a></strong></p>
<h3 id="item02">spec</h3>
<p class='phone'>Philip sent some patches that needs to be
incorporated in the spec</p>
<p class='phone'>As we did lots of changes, we need another LC
(that will be short).</p>
<p class='phone'>I would like that we decide on the LC next
week</p>
<p class='phone'>aiming for 3 weeks review time</p>
<p class='phone'>any objection with the plan?</p>
<p class='irc'><<cite>erik</cite>> no</p>
<p class='irc'><<cite>hackerjack</cite>> no</p>
<p class='phone'><cite>Davy:</cite> do I have to include RTSP
in the spec before next week?</p>
<p class='phone'><cite>Raphael:</cite> yes</p>
<p class='phone'><cite>Davy:</cite> I will try</p>
<p class='phone'>document changed a lot in december but not a
lot since then</p>
<p class='phone'>we need to rephrase slightly the part of the
spec about SMPTE timecodes</p>
<p class='phone'>also new video codec don't have fixed
framerates, we need to address that</p>
<p class='phone'><cite>jack:</cite> 99.99% of existing movies
files will have fixed framerate even if the format allows
dynamic framerate</p>
<p class='phone'><cite>raphael:</cite> we need to address this
case</p>
<p class='phone'><cite>Jack:</cite> starting to rethink my
position on that issue, it makes sense to present the whole
fragment in that case</p>
<p class='phone'>should it be implementation notes?</p>
<p class='phone'><cite>Raphael:</cite> in the final document,
the things that we may remove because of lack of implementation
might go in a non-normative appendix</p>
<p class='phone'><cite>Yves:</cite> fine as long as it is clear
that it's not normative and there because of lack of
implementation</p>
<p class='phone'><cite>Davy:</cite> variable framerate is
usually not implemented as the encoder needs to communicate
with the packager, and not sure it's implemented now. Also
SMPTE time codes at a frame-basis should be there</p>
<p class='phone'><cite>Jack:</cite> how about implemetation
?</p>
<p class='phone'><cite>Davy:</cite> might try to get one at
least partial</p>
<p class='phone'><cite>Jack:</cite> if people are interested in
that, they should demonstrate their interest with code, even if
it's a toy implementation</p>
<p class='phone'><cite>Raphael:</cite> would like to invite
Addison to discuss issue 17 about IRI and track names</p>
<p class='phone'>would feb 2 be ok? (ie: get critical mass
here)</p>
<p class='irc'><<cite>raphael</cite>> I18N discussion:
<a href=
"http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0056.html">
http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0056.html</a></p>
<p class='phone'><cite>raphael:</cite> we also need to dedicate
a complete telcon on test cases.</p>
<p class='phone'><cite>erik:</cite> will issue 19 be solved by
next week?</p>
<p class='phone'><cite>raphael:</cite> yes</p>
<h3 id="item03">HTML WG liaison</h3>
<p class='irc'><<cite>raphael</cite>> Bug: <a href=
"http://www.w3.org/Bugs/Public/show_bug.cgi?id=10723">http://www.w3.org/Bugs/Public/show_bug.cgi?id=10723</a></p>
<p class='phone'>Bug was rejected because it was multiple
things in one bug, Silvia had an AI to open several bugs</p>
<p class='irc'><<cite>raphael</cite>> I have been dropped
:-(</p>
<p class='phone'><cite>Yves:</cite> only the last one about
having to stop at the end of the fragment needs reopening</p>
<h3 id="item04">Implementation</h3>
<p class='phone'>action 204 will be dropped</p>
<p class='irc'><<cite>trackbot</cite>> Sorry, couldn't
find user - 204</p>
<p class='phone'>the header syntax should be checked in the
tests</p>
<h3 id="item05">Open issues</h3>
<p class='phone'>RTSP will be added soon</p>
<h3 id="item06">test cases</h3>
<p class='phone'>Davy has some updates on that front</p>
<p class='irc'><<cite>raphael</cite>> drop ACTION-204</p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://lists.w3.org/Archives/Public/public-media-fragment/2011Jan/0025.html">
http://lists.w3.org/Archives/Public/public-media-fragment/2011Jan/0025.html</a></p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/TC/server-test-cases">
http://www.w3.org/2008/WebVideo/Fragments/TC/server-test-cases</a></p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/TC/server-test-cases">
http://www.w3.org/2008/WebVideo/Fragments/TC/server-test-cases</a></p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/TC/ua-test-cases">http://www.w3.org/2008/WebVideo/Fragments/TC/ua-test-cases</a></p>
<p class='phone'><cite>raphael:</cite> wondering about
server-side tests</p>
<p class='phone'><cite>davy:</cite> we need extra test cases,
yes<br />
... but we have the template for test cases</p>
<p class='phone'><cite>Raphael:</cite> there are two things to
check, URI parsed as it should and HTTP request sent as it
should, and the second point is to verify the behaviour
(graphical)</p>
<p class='phone'><cite>jack:</cite> if we have a client saving
the file, we can do automatic testing</p>
<p class='phone'><cite>Yves:</cite> but there are things that
we can't test that way (like displaying the complete
timeline)</p>
<p class='phone'><cite>Raphael:</cite> a few things needs to
check manually, which is fine</p>
<p class='phone'><cite>Jack:</cite> we need to check what SVG
or CSS people are doing to test graphical output<br />
... also if the number of manually tests is small...</p>
<p class='phone'>s/manually tests/manually verifiable
tests/</p>
<p class='phone'><cite>Jack:</cite> the first thing is to
review all the current tests</p>
<p class='phone'><cite>Davy:</cite> we have also an issue with
sources for tests</p>
<p class='phone'><cite>Raphael:</cite> can we make files or is
transcoding too difficult?</p>
<p class='phone'><cite>Jack:</cite> ffmpeg might help there</p>
<p class='phone'><cite>Raphael:</cite> please ask on the
ML.</p>
<p class='irc'><<cite>hackerjack</cite>> yes</p>
<h3 id="item07">AOB?</h3>
<p class='irc'><<cite>raphael</cite>> One question:
should we use one of the movies in the spec and in the test
cases ?</p>
<p class='phone'><cite>Raphael:</cite> should we use in the
test cases one of the movies we have in the agenda? (ie: one
with the right license)</p>
<p class='irc'><<cite>raphael</cite>> * Sintel: <a href=
"http://www.youtube.com/watch?v=ac7KhViaVqc">http://www.youtube.com/watch?v=ac7KhViaVqc</a></p>
<p class='irc'><<cite>raphael</cite>> ** longer version,
<a href=
"http://www.youtube.com/watch?v=eRsGyueVLvQ">http://www.youtube.com/watch?v=eRsGyueVLvQ</a></p>
<p class='irc'><<cite>raphael</cite>> * Big Bunny:
<a href=
"http://www.youtube.com/watch?v=XSGBVzeBUbk">http://www.youtube.com/watch?v=XSGBVzeBUbk</a></p>
<p class='irc'><<cite>raphael</cite>> * The Elephant
Dreams: <a href=
"http://www.archive.org/details/ElephantsDream">http://www.archive.org/details/ElephantsDream</a></p>
<p class='irc'><<cite>hackerjack</cite>> I would prefer
not to use the suggested movies</p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/media/spatial_30fps.webm">
http://www.w3.org/2008/WebVideo/Fragments/media/spatial_30fps.webm</a>
?</p>
<p class='phone'><cite>Jack:</cite> we should create synthetic
movies, easier to do checking (like switching backgrounds on
boundaries we are about to tests)</p>
<p class='irc'><<cite>davy</cite>> <a href=
"http://ninsuna.elis.ugent.be/Media/MFWG/TC/spatial_30fps.mp4?track=3;1">
http://ninsuna.elis.ugent.be/Media/MFWG/TC/spatial_30fps.mp4?track=3;1</a></p>
<p class='phone'><cite>erik:</cite> should we drop all the AI
assigned to Michael?</p>
<p class='phone'><cite>raphael:</cite> safe ot drop them</p>
<p class='phone'><cite>Erik:</cite> we need to talk about use
cases as well (from Shiraishi San)</p>
<p class='irc'><<cite>Nobu</cite>> Thank you, I am on IRC
now.</p>
<p class='phone'><cite>Erik:</cite> also who is attending the
workshop in Berlin?</p>
<p class='phone'><cite>Raphael:</cite> no</p>
<p class='phone'><cite>Erik:</cite> I should be there</p>
<p class='phone'>ADJOURNED</p>
<p class='irc'><<cite>Nobu</cite>> I</p>
<p class='irc'><<cite>raphael</cite>> Nobu: we agree to
continue the discussion on your use case on the mailing
list</p>
<p class='irc'><<cite>raphael</cite>> please, create a
wiki page if you want</p>
<p class='irc'><<cite>Nobu</cite>> I see, thanks.</p>
<p class='irc'><<cite>raphael</cite>> The Use Cases and
Requirements document is sort of "on hold" ... which means, we
will update it at the end of the rec track process</p>
<p class='irc'><<cite>raphael</cite>> * Sintel: <a href=
"http://www.youtube.com/watch?v=ac7KhViaVqc">http://www.youtube.com/watch?v=ac7KhViaVqc</a></p>
<p class='irc'><<cite>raphael</cite>> ** longer version,
<a href=
"http://www.youtube.com/watch?v=eRsGyueVLvQ">http://www.youtube.com/watch?v=eRsGyueVLvQ</a></p>
<p class='irc'><<cite>raphael</cite>> * Big Bunny:
<a href=
"http://www.youtube.com/watch?v=XSGBVzeBUbk">http://www.youtube.com/watch?v=XSGBVzeBUbk</a></p>
<p class='irc'><<cite>raphael</cite>> * The Elephant
Dreams: <a href=
"http://www.archive.org/details/ElephantsDream">http://www.archive.org/details/ElephantsDream</a></p>
</div>
<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
Items</a></h2><!-- Action Items -->
[End of minutes]<br />
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$Date: 2011/01/19 11:16:47 $
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