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386 lines
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386 lines
14 KiB
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<title>Media Fragments Working Group Teleconference -- 12 May
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2010</title>
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<p><a href="http://www.w3.org/"><img src=
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<h1>Media Fragments Working Group Teleconference</h1>
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<h2>12 May 2010</h2>
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<p><a href=
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'http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0020.html'>
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Agenda</a></p>
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<p>See also: <a href=
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"http://www.w3.org/2010/05/12-mediafrag-irc">IRC log</a></p>
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<h2><a name="attendees" id="attendees">Attendees</a></h2>
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<div class="intro">
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<dl>
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<dt>Present</dt>
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<dd>Erik, Davy, Raphael, Silvia</dd>
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<dt>Regrets</dt>
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<dd>Michael</dd>
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<dt>Chair</dt>
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<dd>Erik, Raphael</dd>
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<dt>Scribe</dt>
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<dd>Davy</dd>
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</dl>
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</div>
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<h2>Contents</h2>
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<ul>
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<li>
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<a href="#agenda">Topics</a>
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<ol>
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<li><a href="#item01">1. Admin</a></li>
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<li><a href="#item02">2. Use Cases and
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Requirements</a></li>
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<li><a href="#item03">3. Specification</a></li>
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<li><a href="#item04">4. AOB?</a></li>
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</ol>
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</li>
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<li><a href="#ActionSummary">Summary of Action Items</a></li>
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</ul>
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<hr />
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<div class="meeting">
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<p class='phone'></p>
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<p class='phone'></p>
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<p class='irc'><<cite>trackbot</cite>> Date: 12 May
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2010</p>
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<h3 id="item01">1. Admin</h3>
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<p class='irc'><<cite>raphael</cite>> Scribe: Davy</p>
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<p class='irc'><<cite>scribe</cite>> scribenick: davy</p>
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<p class='phone'><cite>Raphael:</cite> no full attendance at
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teleconf :-(</p>
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<p class='irc'><<cite>raphael</cite>> Previous telecon:
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<a href=
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"http://www.w3.org/2010/04/14-mediafrag-minutes.html">http://www.w3.org/2010/04/14-mediafrag-minutes.html</a></p>
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<p class='phone'><cite>Raphael:</cite> if people do not like
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the decisions we take at the teleconfs, they should discuss
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this on the mailing list</p>
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<p class='irc'><<cite>raphael</cite>> ... <a href=
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"http://www.w3.org/2010/04/28-mediafrag-minutes.html">http://www.w3.org/2010/04/28-mediafrag-minutes.html</a></p>
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<p class='irc'><<cite>raphael</cite>> ... <a href=
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"http://www.w3.org/2010/05/05-mediafrag-minutes.html">http://www.w3.org/2010/05/05-mediafrag-minutes.html</a></p>
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<p class='irc'><<cite>silvia</cite>> +1</p>
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<p class='phone'>+1</p>
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<p class='irc'><<cite>erik</cite>> +1</p>
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<p class='irc'><<cite>raphael</cite>> +1 for accepting
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these minutes</p>
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<p class='phone'><strong class='resolution'>RESOLUTION: minutes
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accepted</strong></p>
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<p class='irc'><<cite>raphael</cite>> ACTION-92 ?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-92 -- Erik
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Mannens to erik and Raphael to coordinate the writing of papers
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-- due 2010-04-28 -- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/92">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/92</a></p>
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<p class='phone'><cite>raphael:</cite> some parts of the paper
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might be a good starting point for uncomplete sections in the
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spec</p>
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<p class='phone'>close action-92</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-92 Erik and
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Raphael to coordinate the writing of papers closed</p>
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<p class='phone'><cite>raphael:</cite> next F2F meeting
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decision -> postpone it to next week</p>
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<p class='phone'><cite>erik:</cite> even if we are just with 4
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or 5 people and other people on the phone, we should have a
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meeting</p>
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<p class='phone'><strong class='resolution'>RESOLUTION: next
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F2F meeting will be organized at 15-16 June in
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Eurecom</strong></p><a name="action01" id="action01"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> troncy to provide practical
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information for the next F2F [recorded in <a href=
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"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-162
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- Provide practical information for the next F2F [on Raphaël
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Troncy - due 2010-05-19].</p>
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<h3 id="item02">2. Use Cases and Requirements</h3>
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<p class='irc'><<cite>raphael</cite>> ACTION-156?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-156 --
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Conrad Parker to add a "bandwidth conservation use case" -- due
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2010-03-16 -- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/156">
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http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/156</a></p>
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<p class='irc'><<cite>raphael</cite>> Conrad, could you
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update us on this ?</p>
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<p class='irc'><<cite>silvia</cite>> conrad, are you
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still there?</p>
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<h3 id="item03">3. Specification</h3>
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<p class='phone'>discussing the editorship policy of the
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specification</p>
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<p class='irc'><<cite>raphael</cite>> Raphael: curently 2
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groups (editors and contributors) while these roles are not
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really defined by W3C, not consistently used depending on the
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spec</p>
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<p class='irc'><<cite>raphael</cite>> ... Suggest that
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Silvia and Davy jump to the editors group, they have edited
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most of the spec</p>
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<p class='irc'><<cite>raphael</cite>> ... Suggest to talk
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with other contributors on the phone regarding their role in
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the spec (for example, Yves contributed a lot of text some
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months ago)</p>
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<p class='irc'><<cite>raphael</cite>> ... I will apply
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the changes on the spec</p>
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<p class='irc'><<cite>raphael</cite>> ACTION-161?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-161 --
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Silvia Pfeiffer to integrate the test cases into the spec --
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due 2010-04-21 -- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/161">
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http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/161</a></p>
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<p class='phone'><cite>Silvia:</cite> waiting for a few issues
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that are still issues<br />
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... 1. #t=a,a and a >= 0 (#2)<br />
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... is an empty fragment<br />
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... if we send it to the server, we get a 416<br />
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... question is whether the client should send it to the server
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or not, since it can detect there will be an error</p>
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<p class='phone'><cite>raphael:</cite> empty fragment -> UA
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cannot display anything</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: we need to
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have a consistent reaction of media fragment aware browsers</p>
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<p class='irc'><<cite>raphael</cite>> ... for legacy
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browsers, they will react as for HTML</p>
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<p class='irc'><<cite>raphael</cite>> Discussion about
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the empty fragment such as #t=a,a when a>=0</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: the UA
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still sends a range request and should get back an error
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416</p>
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<p class='irc'><<cite>raphael</cite>> Davy: but the UA
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knows it is a semantic error, why sending a request at all
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?</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: the UA
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could simply do nothing ... irritating, but this is happening
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with HTML</p>
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<p class='irc'><<cite>raphael</cite>> ... the fragment is
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not interpreted ?</p>
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<p class='irc'><<cite>raphael</cite>> ... we could just
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get the header data of the media file, but stop, not
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downloading any content !</p>
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<p class='irc'><<cite>raphael</cite>> ... for example, a
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Range Request with an empty fragment and only
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"include-setup"</p>
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<p class='irc'><<cite>raphael</cite>> ... the server
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sends the header data of the media resource</p>
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<p class='irc'><<cite>raphael</cite>> ... with a 206
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Partial Content for the header data</p>
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<p class='phone'><cite>raphael:</cite> we could apply this
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solution for the three cases</p>
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<p class='irc'><<cite>raphael</cite>> Similar solution
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for all non-existent or illegal fragments</p>
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<p class='irc'><<cite>raphael</cite>> ... see cases
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detailed at <a href=
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"http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0021.html">
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http://lists.w3.org/Archives/Public/public-media-fragment/2010May/0021.html</a></p><a name="action02"
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id="action02"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> troncy to send a resolution on
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handling non-existing or illegal fragments to the mailinglist
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[recorded in <a href=
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"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-163
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- Send a resolution on handling non-existing or illegal
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fragments to the mailinglist [on Raphaël Troncy - due
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2010-05-19].</p>
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<p class='phone'>close action-161</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-161
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Integrate the test cases into the spec closed</p>
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<p class='irc'><<cite>raphael</cite>> ACTIOn-154 ?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-154 -- Yves
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Lafon to add a section 5.2.4 describing his new optimization --
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due 2010-03-16 -- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/154">
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http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/154</a></p>
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<p class='irc'><<cite>raphael</cite>> Raphael: we have
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described this recipe in the paper and we have the figure</p>
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<p class='irc'><<cite>raphael</cite>> Raphael: I have a
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plugin for firefox, works with ninsuna with videos already
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ingested</p>
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<p class='irc'><<cite>raphael</cite>> ... will send the
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version to Davy and Silvia for testing now</p>
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<p class='irc'><<cite>raphael</cite>> ... + a readme
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:-)</p>
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<p class='irc'><<cite>raphael</cite>> Davy: work on
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making Ninsuna acting as a proxy</p>
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<p class='irc'><<cite>raphael</cite>> Raphael: add a
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parameter in the proxy to specify a proxy ... so get media
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fragments URI on any MP4 videos on the web</p>
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<p class='irc'><<cite>raphael</cite>> RESOLUTION:
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re-allocate ACTION-154 to Davy</p>
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<p class='irc'><<cite>raphael</cite>> ACTION-123?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-123 -- Yves
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Lafon to come up with ABNF for header syntax -- due 2009-12-09
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-- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123">
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http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123</a></p>
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<p class='phone'>Action-123?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-123 -- Yves
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Lafon to come up with ABNF for header syntax -- due 2009-12-09
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-- OPEN</p>
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<p class='irc'><<cite>trackbot</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123">
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http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/123</a></p>
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<p class='irc'><<cite>raphael</cite>> RESOLUTION:
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re-allocate ACTION-123 to Silvia</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: I think we
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should go to LC even if all the features are not resolved</p>
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<p class='irc'><<cite>raphael</cite>> ... in order to get
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more feedback</p>
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<p class='irc'><<cite>raphael</cite>> Raphael: agree, f2f
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meeting mid-June and then LC request end of June</p>
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<h3 id="item04">4. AOB?</h3>
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<p class='phone'>[adjourned]</p>
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</div>
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<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
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Items</a></h2><!-- Action Items -->
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<strong>[NEW]</strong> <strong>ACTION:</strong> troncy to provide
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practical information for the next F2F [recorded in <a href=
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"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action01</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> troncy to send a
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resolution on handling non-existing or illegal fragments to the
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mailinglist [recorded in <a href=
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"http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02">http://www.w3.org/2010/05/12-mediafrag-minutes.html#action02</a>]<br />
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<br />
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[End of minutes]<br />
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<hr />
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<address>
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Minutes formatted by David Booth's <a href=
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"http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm">
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scribe.perl</a> version 1.135 (<a href=
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"http://dev.w3.org/cvsweb/2002/scribe/">CVS log</a>)<br />
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$Date: 2010/05/12 09:56:39 $
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</address>
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<div class="diagnostics"></div>
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