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482 lines
17 KiB
482 lines
17 KiB
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<meta name="generator" content=
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<title>Media Fragments Working Group Teleconference -- 20 May
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2009</title>
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<p><a href="http://www.w3.org/"><img src=
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"48" width="72" /></a></p>
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<h1>- DRAFT -</h1>
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<h1>Media Fragments Working Group Teleconference</h1>
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<h2>20 May 2009</h2>
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<p><a href=
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'http://lists.w3.org/Archives/Public/public-media-fragment/2009May/0029.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/2009/05/20-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>raphael, mhausenblas, +0329331aaaa, davy, silvia, conrad,
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gui, +20592aabb, jackjansen, +1.818.061.aacc,
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+081806143aadd</dd>
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<dt>Regrets</dt>
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<dd>Erik</dd>
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<dt>Chair</dt>
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<dd>Raphael</dd>
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<dt>Scribe</dt>
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<dd>mhausenblas</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">ADMIN</a></li>
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<li><a href="#item02">UC & REQUIREMENTS</a></li>
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<li><a href="#item03">SPECIFICATION</a></li>
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<li><a href="#item04">TEST CASES (Michael)</a></li>
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<li><a href="#item05">ISSUES</a></li>
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<li><a href="#item06">IMPLEMENTATION</a></li>
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<li><a href="#item07">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: 20 May
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2009</p>
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<p class='phone'><cite>Previous:</cite> 2009-05-13 <a href=
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"http://www.w3.org/2009/05/13-mediafrag-irc">http://www.w3.org/2009/05/13-mediafrag-irc</a></p>
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<p class='irc'><<cite>scribe</cite>> Scribenick:
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mhausenblas</p>
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<p class='irc'><<cite>conrad</cite>> heh</p>
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<p class='irc'><<cite>jackjansen</cite>> on my way</p>
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<h3 id="item01">ADMIN</h3>
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<p class='phone'><cite>raphael:</cite> PROPOSED to accept the
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minutes of the 13 May 2009 telecon:</p>
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<p class='phone'><a href=
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"http://www.w3.org/2009/05/13-mediafrag-minutes.html">http://www.w3.org/2009/05/13-mediafrag-minutes.html</a></p>
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<p class='irc'><<cite>davy</cite>> +1</p>
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<p class='phone'>+1</p>
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<p class='irc'><<cite>raphael</cite>> +1</p>
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<p class='irc'><<cite>Gui</cite>> +1</p>
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<p class='phone'><cite>raphael:</cite> minutes approved</p>
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<p class='phone'>ACTION-66</p>
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<p class='phone'>ACTION-66?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-66 -- Jack
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Jansen to look at the organisation of the 4th F2F meeting in
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Amsterdam on September 17-18 (just after IBC) -- due 2009-04-23
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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/66">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/66</a></p>
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<p class='phone'>close ACTION-66</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-66 Look at
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the organisation of the 4th F2F meeting in Amsterdam on
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September 17-18 (just after IBC) closed</p>
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<p class='phone'><cite>raphael:</cite> what shall we do
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jackjansen?</p>
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<p class='phone'><cite>jackjansen:</cite> not so much in a
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hurry. after IBC things here in A'dam are normal again<br />
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... that is we can wait a bit</p>
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<p class='phone'><cite>raphael:</cite> so we can wait till end
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of June</p>
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<p class='phone'><cite>jackjansen:</cite> silvia, we didn't
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pick the slot due to IBC in the first place<br />
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... but we wanted to have somethin in 09/2009<br />
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... other question. is any other place/time doable for the
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Aussies/SAfricans?</p>
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<p class='phone'><cite>raphael:</cite> alternative proposal was
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SAMT09, Graz, Austria</p>
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<p class='phone'><cite>Michael:</cite> not sure if it makes
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sense to rehash that topic</p>
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<p class='phone'><cite>raphael:</cite> we will ensure to have
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more virtual meetings as well<br />
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... the September meeting is still an option<br />
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... will be decided by end of June</p>
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<h3 id="item02">UC & REQUIREMENTS</h3>
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<p class='phone'><cite>raphael:</cite> no progress so far, will
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be done ASAP</p>
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<h3 id="item03">SPECIFICATION</h3>
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<p class='irc'><<cite>conrad</cite>> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/UA_Server_HTTP_Communication#Conrad.27s_proposal">
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http://www.w3.org/2008/WebVideo/Fragments/wiki/UA_Server_HTTP_Communication#Conrad.27s_proposal</a></p>
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<p class='phone'>UA Server HTTP Communication
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(Conrad/Raphael)</p>
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<p class='phone'>conrad explains his proposal</p>
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<p class='phone'><cite>raphael:</cite> question regarding
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Accept-Range-Refer is similar to the original proposal?<br />
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... how is the conversion between sec and bytes done</p>
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<p class='irc'><<cite>conrad</cite>> bah</p>
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<p class='irc'><<cite>raphael</cite>> My first
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observation: Accept-Range-Refer ~= Accept-Ranges AND
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Range-refer ~= Range HTTP headers</p>
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<p class='phone'><cite>Michael:</cite> same here</p>
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<p class='irc'><<cite>Gui</cite>> what I remember from
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Conrad proposal is : 1. clarification on the order of fallback
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mechanisms and 2. more verbose HTTP headers</p>
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<p class='phone'><cite>raphael:</cite> 1. question is sec to
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bytes conversion</p>
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<p class='phone'><cite>conrad:</cite> Server is authoritative
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re conversion</p>
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<p class='phone'><cite>silvia:</cite> we should have a
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comparison of the three proposals on the table<br />
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... and having Yves on board would certainly help</p>
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<p class='phone'><cite>raphael:</cite> now we should focus on
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the # solution, move ? to the bottom</p>
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<p class='phone'><cite>jackjansen:</cite> I think we should
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keep the two as it might help establishing backwards
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compatibility, right conrad?</p>
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<p class='phone'><cite>conrad:</cite> correct</p>
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<p class='phone'><cite>raphael:</cite> ok, but we still need an
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overview table comparing the proposals<br />
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... I also miss the number of roundtrips<br />
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... seems always one, no?</p>
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<p class='phone'><cite>conrad:</cite> no, there are further
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requests</p>
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<p class='phone'>ACTION-63?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-63 --
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Conrad Parker to update the Wiki with his more general approach
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with precisely the same examples -- due 2009-04-23 -- 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/63">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/63</a></p>
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<p class='phone'><cite>jackjansen:</cite> please give also a
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rational for it, esp. re the use cases you have in
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mind</p><a name="action01" id="action01"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Conrad to provide some rational and
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use cases for his proposal [recorded in <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html#action01">http://www.w3.org/2009/05/20-mediafrag-minutes.html#action01</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-80
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- Provide some rationalee and use cases for his proposal [on
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Conrad Parker - due 2009-05-27].</p>
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<p class='irc'><<cite>jackjansen</cite>> s/ups/oops</p>
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<p class='irc'><<cite>jackjansen</cite>> :-)</p>
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<p class='phone'>UA MF Resolution and Processing: (Michael)</p>
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<p class='phone'>work continues</p>
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<p class='phone'><cite>raphael:</cite> so we continue to
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discuss via email</p>
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<h3 id="item04">TEST CASES (Michael)</h3>
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<p class='phone'><cite>raphael:</cite> we started to go through
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the TC last week</p>
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<p class='phone'><a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/TestCases">http://www.w3.org/2008/WebVideo/Fragments/wiki/TestCases</a></p>
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<p class='irc'><<cite>jackjansen</cite>> url?</p>
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<p class='phone'>ACTION-79?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-79 --
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Michael Hausenblas to summarise the options for 4xx status code
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for empty TC0002-0007 in a Wiki page -- due 2009-05-20 --
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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/79">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/79</a></p>
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<p class='phone'>close ACTION-79</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-79
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Summarise the options for 4xx status code for empty TC0002-0007
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in a Wiki page closed</p>
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<p class='phone'><cite>Michael:</cite> see <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/TestCasesDiscussion">
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http://www.w3.org/2008/WebVideo/Fragments/wiki/TestCasesDiscussion</a></p>
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<p class='phone'><cite>PROPOSAL:</cite> In case an 'empty
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response' (such as found in TC0002-0006) occurs, the origin
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server MUST send an HTTP 416 status code if and only if the
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fragment range was given in an HTTP Range request header,
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otherwise a HTTP 406 status code MUST be send.</p>
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<p class='phone'><cite>Michael:</cite> beside not knowing of
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other usages of 416/406 ...</p>
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<p class='phone'><cite>jackjansen:</cite> has it already been
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decided to be 4xx??</p>
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<p class='irc'><<cite>conrad</cite>> :)</p>
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<p class='phone'><cite>jackjansen:</cite> why not using
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204?</p>
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<p class='irc'><<cite>davy</cite>> I think range 20-10 is
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the same error as 0-0 if we specify that the start has to be
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smaller than the end</p>
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<p class='irc'><<cite>raphael</cite>> Discussion about
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what *is* an empty fragment?</p>
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<p class='irc'><<cite>raphael</cite>> 204: a valid
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fragment but no content</p>
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<p class='irc'><<cite>raphael</cite>> 4xx: an error,
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because the UA has nothing to present</p>
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<p class='irc'><<cite>conrad</cite>> yeah :-(</p><a name=
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"action02" id="action02"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Michael to update the TC discussion
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page with 204 proposal and ask Yves's opinion on the list
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[recorded in <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html#action02">http://www.w3.org/2009/05/20-mediafrag-minutes.html#action02</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-81
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- Update the TC discussion page with 204 proposal and ask
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Yves's opinion on the list [on Michael Hausenblas - due
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2009-05-27].</p>
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<h3 id="item05">ISSUES</h3>
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<p class='phone'>ISSUE-3?</p>
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<p class='irc'><<cite>trackbot</cite>> ISSUE-3 -- Does
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our MF URI syntax imply that we need to update MIME Type
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registrations? -- 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/issues/3">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/3</a></p>
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<p class='phone'>ISSUE-4 ?</p>
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<p class='phone'>ISSUE-4?</p>
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<p class='irc'><<cite>raphael</cite>> ACTION-73?</p>
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<p class='irc'><<cite>trackbot</cite>> ACTION-73 --
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Conrad Parker to change the phrasing of the issue 4 (just
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audio/video)? -- due 2009-04-24 -- 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/73">http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/73</a></p>
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<p class='phone'>conrad, re issue no. 4?</p>
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<p class='irc'><<cite>conrad</cite>> ok</p>
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<p class='phone'>ISSUE-9?</p>
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<p class='irc'><<cite>trackbot</cite>> ISSUE-9 -- Should
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we have the media type inside the Test Cases? -- 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/issues/9">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/9</a></p><a name="action03"
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id="action03"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Michael to flesh out TC vocabulary re
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ISSUE-9 [recorded in <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html#action03">http://www.w3.org/2009/05/20-mediafrag-minutes.html#action03</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-82
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- Flesh out TC vocabulary re ISSUE-9 [on Michael Hausenblas -
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due 2009-05-27].</p>
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<p class='irc'><<cite>conrad</cite>> issue-4: so i think
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we discussed not predefining lots of track names, but perhaps
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predefining "audio" and "video" only: in which case action 73
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would be to change issue 4 to "Should we predefine track names
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for audio and video"</p>
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<p class='irc'><<cite>trackbot</cite>> ISSUE-4 Should we
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pre-define some track names? notes added</p>
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<h3 id="item06">IMPLEMENTATION</h3>
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<p class='phone'><cite>raphael:</cite> to push implementations
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we need the proposals a bit better discussed<br />
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... all actions here continue</p>
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<h3 id="item07">AOB</h3>
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<p class='phone'>[adjourned]</p>
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<p class='irc'><<cite>Gui</cite>> thanks, bye</p>
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<p class='irc'><<cite>conrad</cite>> thanks all</p>
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<p class='phone'><cite>silvia:</cite> good idea</p>
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<p class='phone'>just send an email to the list with subject
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[MF-TC] or so proposing it</p>
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<p class='phone'>I'll add it to the Wiki then, ok?</p>
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<p class='irc'><<cite>silvia</cite>> cool</p>
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<p class='phone'>ta</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> Conrad to provide
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some rational and use cases for his proposal [recorded in
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<a href="http://www.w3.org/2009/05/20-mediafrag-minutes.html#action01">
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http://www.w3.org/2009/05/20-mediafrag-minutes.html#action01</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> Michael to flesh
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out TC vocabulary re ISSUE-9 [recorded in <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html#action03">http://www.w3.org/2009/05/20-mediafrag-minutes.html#action03</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> Michael to update
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the TC discussion page with 204 proposal and ask Yves's opinion
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on the list [recorded in <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html#action02">http://www.w3.org/2009/05/20-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: 2009/05/20 12:51:02 $
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</address>
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<div class="diagnostics">
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<hr />
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<h2>Scribe.perl diagnostic output</h2>[Delete this section
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before finalizing the minutes.]<br />
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<pre>
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This is scribe.perl Revision: 1.135 of Date: 2009/03/02 03:52:20
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Check for newer version at <a href=
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"http://dev.w3.org/cvsweb/~checkout~/2002/scribe/">http://dev.w3.org/cvsweb/~checkout~/2002/scribe/</a>
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Guessing input format: RRSAgent_Text_Format (score 1.00)
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Succeeded: s/feedback/fallback/
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Succeeded: s/rational/rationale/
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Succeeded: s/rational/rationale/
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FAILED: s/ups/oops/
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Succeeded: s/decided/decided to be 4xx?/
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Found ScribeNick: mhausenblas
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Inferring Scribes: mhausenblas
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Default Present: raphael, mhausenblas, +0329331aaaa, davy, silvia, conrad, gui, +20592aabb, jackjansen, +1.818.061.aacc, +081806143aadd
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Present: raphael mhausenblas +0329331aaaa davy silvia conrad gui +20592aabb jackjansen +1.818.061.aacc +081806143aadd
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Regrets: Erik
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Agenda: <a href=
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"http://lists.w3.org/Archives/Public/public-media-fragment/2009May/0029.html">http://lists.w3.org/Archives/Public/public-media-fragment/2009May/0029.html</a>
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Found Date: 20 May 2009
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Guessing minutes URL: <a href=
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"http://www.w3.org/2009/05/20-mediafrag-minutes.html">http://www.w3.org/2009/05/20-mediafrag-minutes.html</a>
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People with action items: conrad michael
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</pre>[End of <a href=
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"http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm">
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scribe.perl</a> diagnostic output]
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</div>
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</body>
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</html>
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