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<title>Media Fragments Working Group Teleconference -- 12 May
2010</title>
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<h1>Media Fragments Working Group Teleconference</h1>
<h2>12 May 2010</h2>
<p><a href=
'http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0020.html'>
Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2010/05/12-mediafrag-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>Erik, Davy, Raphael, Silvia</dd>
<dt>Regrets</dt>
<dd>Michael</dd>
<dt>Chair</dt>
<dd>Erik, Raphael</dd>
<dt>Scribe</dt>
<dd>Davy</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">2. Use Cases and
Requirements</a></li>
<li><a href="#item03">3. Specification</a></li>
<li><a href="#item04">4. 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: 12 May
2010</p>
<h3 id="item01">1. Admin</h3>
<p class='irc'><<cite>raphael</cite>> Scribe: Davy</p>
<p class='irc'><<cite>scribe</cite>> scribenick: davy</p>
<p class='phone'><cite>Raphael:</cite> no full attendance at
teleconf :-(</p>
<p class='irc'><<cite>raphael</cite>> Previous telecon:
<a href=
"http://www.w3.org/2010/04/14-mediafrag-minutes.html">http://www.w3.org/2010/04/14-mediafrag-minutes.html</a></p>
<p class='phone'><cite>Raphael:</cite> if people do not like
the decisions we take at the teleconfs, they should discuss
this on the mailing list</p>
<p class='irc'><<cite>raphael</cite>> ... <a href=
"http://www.w3.org/2010/04/28-mediafrag-minutes.html">http://www.w3.org/2010/04/28-mediafrag-minutes.html</a></p>
<p class='irc'><<cite>raphael</cite>> ... <a href=
"http://www.w3.org/2010/05/05-mediafrag-minutes.html">http://www.w3.org/2010/05/05-mediafrag-minutes.html</a></p>
<p class='irc'><<cite>silvia</cite>> +1</p>
<p class='phone'>+1</p>
<p class='irc'><<cite>erik</cite>> +1</p>
<p class='irc'><<cite>raphael</cite>> +1 for accepting
these minutes</p>
<p class='phone'><strong class='resolution'>RESOLUTION: minutes
accepted</strong></p>
<p class='irc'><<cite>raphael</cite>> ACTION-92 ?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-92 -- Erik
Mannens to erik and Raphael to coordinate the writing of papers
-- due 2010-04-28 -- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/92">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/92</a></p>
<p class='phone'><cite>raphael:</cite> some parts of the paper
might be a good starting point for uncomplete sections in the
spec</p>
<p class='phone'>close action-92</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-92 Erik and
Raphael to coordinate the writing of papers closed</p>
<p class='phone'><cite>raphael:</cite> next F2F meeting
decision -> postpone it to next week</p>
<p class='phone'><cite>erik:</cite> even if we are just with 4
or 5 people and other people on the phone, we should have a
meeting</p>
<p class='phone'><strong class='resolution'>RESOLUTION: next
F2F meeting will be organized at 15-16 June in
Eurecom</strong></p><a name="action01" id="action01"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> troncy to provide practical
information for the next F2F [recorded in <a href=
"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-162
- Provide practical information for the next F2F [on Raphaël
Troncy - due 2010-05-19].</p>
<h3 id="item02">2. Use Cases and Requirements</h3>
<p class='irc'><<cite>raphael</cite>> ACTION-156?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-156 --
Conrad Parker to add a "bandwidth conservation use case" -- due
2010-03-16 -- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/156">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/156</a></p>
<p class='irc'><<cite>raphael</cite>> Conrad, could you
update us on this ?</p>
<p class='irc'><<cite>silvia</cite>> conrad, are you
still there?</p>
<h3 id="item03">3. Specification</h3>
<p class='phone'>discussing the editorship policy of the
specification</p>
<p class='irc'><<cite>raphael</cite>> Raphael: curently 2
groups (editors and contributors) while these roles are not
really defined by W3C, not consistently used depending on the
spec</p>
<p class='irc'><<cite>raphael</cite>> ... Suggest that
Silvia and Davy jump to the editors group, they have edited
most of the spec</p>
<p class='irc'><<cite>raphael</cite>> ... Suggest to talk
with other contributors on the phone regarding their role in
the spec (for example, Yves contributed a lot of text some
months ago)</p>
<p class='irc'><<cite>raphael</cite>> ... I will apply
the changes on the spec</p>
<p class='irc'><<cite>raphael</cite>> ACTION-161?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-161 --
Silvia Pfeiffer to integrate the test cases into the spec --
due 2010-04-21 -- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/161">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/161</a></p>
<p class='phone'><cite>Silvia:</cite> waiting for a few issues
that are still issues<br />
... 1. #t=a,a and a >= 0 (#2)<br />
... is an empty fragment<br />
... if we send it to the server, we get a 416<br />
... question is whether the client should send it to the server
or not, since it can detect there will be an error</p>
<p class='phone'><cite>raphael:</cite> empty fragment -> UA
cannot display anything</p>
<p class='irc'><<cite>raphael</cite>> Silvia: we need to
have a consistent reaction of media fragment aware browsers</p>
<p class='irc'><<cite>raphael</cite>> ... for legacy
browsers, they will react as for HTML</p>
<p class='irc'><<cite>raphael</cite>> Discussion about
the empty fragment such as #t=a,a when a>=0</p>
<p class='irc'><<cite>raphael</cite>> Silvia: the UA
still sends a range request and should get back an error
416</p>
<p class='irc'><<cite>raphael</cite>> Davy: but the UA
knows it is a semantic error, why sending a request at all
?</p>
<p class='irc'><<cite>raphael</cite>> Silvia: the UA
could simply do nothing ... irritating, but this is happening
with HTML</p>
<p class='irc'><<cite>raphael</cite>> ... the fragment is
not interpreted ?</p>
<p class='irc'><<cite>raphael</cite>> ... we could just
get the header data of the media file, but stop, not
downloading any content !</p>
<p class='irc'><<cite>raphael</cite>> ... for example, a
Range Request with an empty fragment and only
"include-setup"</p>
<p class='irc'><<cite>raphael</cite>> ... the server
sends the header data of the media resource</p>
<p class='irc'><<cite>raphael</cite>> ... with a 206
Partial Content for the header data</p>
<p class='phone'><cite>raphael:</cite> we could apply this
solution for the three cases</p>
<p class='irc'><<cite>raphael</cite>> Similar solution
for all non-existent or illegal fragments</p>
<p class='irc'><<cite>raphael</cite>> ... see cases
detailed at <a href=
"http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0021.html">
http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0021.html</a></p><a name="action02"
id="action02"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> troncy to send a resolution on
handling non-existing or illegal fragments to the mailinglist
[recorded in <a href=
"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-163
- Send a resolution on handling non-existing or illegal
fragments to the mailinglist [on Raphaël Troncy - due
2010-05-19].</p>
<p class='phone'>close action-161</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-161
Integrate the test cases into the spec closed</p>
<p class='irc'><<cite>raphael</cite>> ACTIOn-154 ?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-154 -- Yves
Lafon to add a section 5.2.4 describing his new optimization --
due 2010-03-16 -- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/154">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/154</a></p>
<p class='irc'><<cite>raphael</cite>> Raphael: we have
described this recipe in the paper and we have the figure</p>
<p class='irc'><<cite>raphael</cite>> Raphael: I have a
plugin for firefox, works with ninsuna with videos already
ingested</p>
<p class='irc'><<cite>raphael</cite>> ... will send the
version to Davy and Silvia for testing now</p>
<p class='irc'><<cite>raphael</cite>> ... + a readme
:-)</p>
<p class='irc'><<cite>raphael</cite>> Davy: work on
making Ninsuna acting as a proxy</p>
<p class='irc'><<cite>raphael</cite>> Raphael: add a
parameter in the proxy to specify a proxy ... so get media
fragments URI on any MP4 videos on the web</p>
<p class='irc'><<cite>raphael</cite>> RESOLUTION:
re-allocate ACTION-154 to Davy</p>
<p class='irc'><<cite>raphael</cite>> ACTION-123?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-123 -- Yves
Lafon to come up with ABNF for header syntax -- due 2009-12-09
-- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123</a></p>
<p class='phone'>Action-123?</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-123 -- Yves
Lafon to come up with ABNF for header syntax -- due 2009-12-09
-- OPEN</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123">
http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123</a></p>
<p class='irc'><<cite>raphael</cite>> RESOLUTION:
re-allocate ACTION-123 to Silvia</p>
<p class='irc'><<cite>raphael</cite>> Silvia: I think we
should go to LC even if all the features are not resolved</p>
<p class='irc'><<cite>raphael</cite>> ... in order to get
more feedback</p>
<p class='irc'><<cite>raphael</cite>> Raphael: agree, f2f
meeting mid-June and then LC request end of June</p>
<h3 id="item04">4. AOB?</h3>
<p class='phone'>[adjourned]</p>
</div>
<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
Items</a></h2><!-- Action Items -->
<strong>[NEW]</strong> <strong>ACTION:</strong> troncy to provide
practical information for the next F2F [recorded in <a href=
"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> troncy to send a
resolution on handling non-existing or illegal fragments to the
mailinglist [recorded in <a href=
"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02</a>]<br />
<br />
[End of minutes]<br />
<hr />
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$Date: 2010/05/12 09:56:39 $
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