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<title>Media Fragments Working Group Teleconference -- 06 Oct
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<h1>Media Fragments Working Group Teleconference</h1>
<h2>06 Oct 2010</h2>
<p><a href=
'http://lists.w3.org/Archives/Public/public-media-fragment/2010Oct/0003.html'>
Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2010/10/06-mediafrag-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>+39.523.0.aaaa, raphael, +20592aabb, Yves, jackjansen,
+329331aacc, Davy</dd>
<dt>Regrets</dt>
<dd>Erik, Silvia</dd>
<dt>Chair</dt>
<dd>Raphael</dd>
<dt>Scribe</dt>
<dd>jackjansen</dd>
</dl>
</div>
<h2>Contents</h2>
<ul>
<li><a href="#agenda">Topics</a></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: 06 October
2010</p>
<p class='irc'><<cite>raphael</cite>> Matroska (MKV)</p>
<p class='irc'><<cite>Yves</cite>> <a href=
"http://en.wikipedia.org/wiki/Matroska">http://en.wikipedia.org/wiki/Matroska</a></p>
<p class='irc'><<cite>Yves</cite>> scribe: jackjansen</p>
<p class='irc'><<cite>Yves</cite>> chair: raphael</p>
<p class='phone'>1. ADMIN</p>
<p class='irc'><<cite>raphael</cite>> <a href=
"http://www.w3.org/2010/09/29-mediafrag-minutes.html">http://www.w3.org/2010/09/29-mediafrag-minutes.html</a></p>
<p class='irc'><<cite>davy</cite>> +1</p>
<p class='irc'><<cite>raphael</cite>> +1</p>
<p class='phone'><cite>Raphael:</cite> minutes accepted<br />
... keep 183 open, in progress</p>
<p class='irc'><<cite>raphael</cite>> ACTION-185?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-185 -- Yves
Lafon to book zakim for the 2 days meeting of the group on Mon
1st and Tue 2nd Nov -- due 2010-09-29 -- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/185">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/185</a></p>
<p class='phone'><cite>Raphael:</cite> 188 closed, just now
reminded Jack</p>
<p class='phone'>2. MEDIA FRAGMENT EXTENSION</p>
<p class='irc'><<cite>raphael</cite>> close
ACTION-188</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-188 Remind
Jack and Michael to register asap for TPAC closed</p>
<p class='irc'><<cite>raphael</cite>> Raphael:
summarizing the long thread and discussion about
extensibility</p>
<p class='irc'><<cite>raphael</cite>> ... and summarizing
the position of philip</p>
<p class='irc'><<cite>raphael</cite>> Jack: the only
thing we should say is: if we partially understand a media
fragment, should we accept or ignore ?</p>
<p class='irc'><<cite>raphael</cite>> ... this is one
line in the spec</p>
<p class='irc'><<cite>raphael</cite>> ... we should
accept what is acceptable</p>
<p class='irc'><<cite>raphael</cite>> ... and in
particular if a media fragment URI can have things we don't
understand</p>
<p class='irc'><<cite>raphael</cite>> ... and personally
I don't care about the grammar</p>
<p class='irc'><<cite>raphael</cite>> Yves: we should be
very caution with extension</p>
<p class='phone'><cite>Yves:</cite> we should be careful with
extensions</p>
<p class='irc'><<cite>raphael</cite>> ... e.g. the ref
redefines an existing dimension</p>
<p class='phone'><cite>Jack:</cite> explains we could use an
attribute to control strict or loose parsing</p>
<p class='phone'><cite>All:</cite> think this is ugly</p>
<p class='irc'><<cite>Yves</cite>> :)</p>
<p class='phone'><cite>Jack:</cite> suggestion: we mandate the
chair to decide something</p>
<p class='irc'><<cite>raphael</cite>> Jack: I have no
strong feeling either way</p>
<p class='phone'><cite>Jack:</cite> I do think (and so does
Davy) that if we recognize the attribute name then the value
must adhere to our syntax</p>
<p class='irc'><<cite>raphael</cite>> #t=banana ... means
parsing stops</p>
<p class='irc'><<cite>davy</cite>> #t=10&t=20 ...
means parsing stops?</p>
<p class='irc'><<cite>Yves</cite>> well if you always
ignore what you don't understand #t=banana&xywh=10,10,20,20
should be xywh=10,10,20,20</p>
<p class='irc'><<cite>davy</cite>> I disagree</p>
<p class='phone'>That woulnd mean that t=1o&xywh=1,2,3,4
would parse</p>
<p class='irc'><<cite>Yves</cite>> this is what is
consistent with 'ignoring what you don't understand'</p>
<p class='irc'><<cite>Yves</cite>> we have t=npt:120,
what happens if we have t=<mytimeunit>:120 ?</p>
<p class='irc'><<cite>Yves</cite>> we can have
extensionaxis = extensionname = extensionvalue</p>
<p class='irc'><<cite>raphael</cite>> Jack: we should not
try to encode in a grammar what we will not understand</p>
<p class='irc'><<cite>Yves</cite>> but jack, encoding
extension points is a good thing to do</p>
<p class='phone'><cite>Yves:</cite> either we do nothing about
extension or do it correct, with extensionaxis in the
grammar<br />
... we could check what existing implementations do</p>
<p class='phone'><cite>Raphael:</cite> they are waiting for us
to specify correct behaviour<br />
... time to adjourn</p>
<p class='irc'><<cite>raphael</cite>> Jack: I suggest the
chairs put a deadline and take a decision on this issue</p>
<p class='irc'><<cite>raphael</cite>> Raphael: I agree, I
will have a discussion with Erik</p>
</div>
<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
Items</a></h2><!-- Action Items -->
[End of minutes]<br />
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