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<title>Media Fragments Working Group Teleconference -- 08 Oct
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2008</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>08 Oct 2008</h2>
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<p><a href=
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'http://lists.w3.org/Archives/Public/public-media-fragment/2008Oct/0040.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/2008/10/08-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, Raphael, Yves, Thierry, Davy, Silvia, Michael</dd>
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<dt>Regrets</dt>
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<dd>Jack</dd>
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<dt>Chair</dt>
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<dd>Erik</dd>
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<dt>Scribe</dt>
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<dd>Michael</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. ISSUES</a></li>
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<li><a href="#item03">3. USE CASES</a></li>
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<li><a href="#item04">4. STATE OF THE ART</a></li>
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<li><a href="#item05">5. 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='irc'><<cite>trackbot</cite>> Meeting: Media
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Fragments Working Group Teleconference</p>
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<p class='irc'><<cite>trackbot</cite>> Date: 08 October
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2008</p>
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<p class='irc'><<cite>raphael</cite>> Scribe: Michael</p>
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<h3 id="item01">1. ADMIN</h3>
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<p class='phone'><cite>Erik:</cite> Accept minutes?</p>
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<p class='irc'><<cite>raphael</cite>> +1 for accepting
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the minutes</p>
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<p class='phone'>Yves will take care of the Wiki issue right
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after call</p>
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<p class='irc'><<cite>raphael</cite>> RESOLVED: minutes
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from 2008/10/01 telecon accepted</p>
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<h3 id="item02">2. ISSUES</h3>
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<p class='phone'>-> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/Issues">http://www.w3.org/2008/WebVideo/Fragments/wiki/Issues</a>
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Issues</p>
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<p class='phone'><cite>Raphael:</cite> I've structured the
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issue on the Wiki, most seem to concern all UC<br />
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... temporal seem ok spatial is still open</p>
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<p class='phone'><cite>Silvia:</cite> temporally connected
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fragments?</p>
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<p class='phone'><cite>Raphael:</cite> Video UC</p>
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<p class='phone'><cite>Silvia:</cite> multiple URIs is hard to
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deal with, though I see it is needed</p>
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<p class='phone'><cite>Raphael:</cite> Thinking back of the
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interview, edited in two parts</p>
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<p class='irc'><<cite>raphael</cite>> Silvia points out
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the complexity of multi-fragment URIs</p>
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<p class='irc'><<cite>raphael</cite>> Given what Silvia
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suggests, I think this issue is related to the playlist UC</p>
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<p class='irc'><<cite>nessy</cite>> xspf = playlist
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format</p>
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<p class='irc'><<cite>raphael</cite>> The question boils
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to: can a multi-fragment URI be implemented as a playlist? is
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it the same thing?</p>
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<p class='phone'><cite>Silvia:</cite> follow up on F2F</p>
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<p class='phone'><cite>Erik:</cite> spatial fragment shape?</p>
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<p class='phone'><cite>Raphael:</cite> Might be a matter of
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complexity, maybe in the second phase of the WG?</p>
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<p class='irc'><<cite>raphael</cite>> Silvia suggests to
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look at the image maps specification</p>
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<p class='phone'><cite>Raphael:</cite> will look into
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it</p><a name="action01" id="action01"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Raphael to look into image maps spec
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re spatial fragment shape [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Sorry, couldn't
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find user - Raphael</p>
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<p class='phone'><cite>Erik:</cite> containers and
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substreams</p>
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<p class='phone'><cite>Silvia:</cite> From HTTP POV we're
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looking at resources<br />
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... in the media POV a container<br />
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... however re RTSP the format the container<br />
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... should focus on HTTP</p>
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<p class='phone'><cite>Raphael:</cite> Wouldn't is make sense
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to list all container formats we want to deal with?</p>
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<p class='phone'><cite>Davy:</cite> ack to support container
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formats</p>
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<p class='irc'><<cite>raphael</cite>> Is the Matroska
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(mkv) format relevant for example?</p>
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<p class='irc'><<cite>Yves</cite>> documenting what we
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investigated is good for other people to find out where we are
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coming from once we have a solution</p>
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<p class='irc'><<cite>raphael</cite>> +1 for
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documentation</p>
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<p class='phone'>+1</p>
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<p class='phone'>sorry, for whom?</p><a name="action02" id=
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"action02"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Davy and Erik to document container
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formats [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-3 -
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And Erik to document container formats [on Davy Van Deursen -
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due 2008-10-15].</p>
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<p class='phone'><cite>Erik:</cite> In-context /
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Out-of-context</p>
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<p class='irc'><<cite>raphael</cite>> The wiki section is
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badly phrased, should be rephrased</p>
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<p class='irc'><<cite>Yves</cite>> the difference between
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a fragment and a complete resource (which can be a part of
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something bigger), depends mostly on the way we identify the
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fragment</p>
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<p class='phone'><cite>Erik:</cite> Representation and
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Implementation Issues<br />
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... URI Fragment / URI Query</p>
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<p class='irc'><<cite>raphael</cite>> thanks Silvia, most
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appreaciated you took this action</p>
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<p class='irc'><<cite>Yves</cite>> I would note that ';'
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is another separator that ca be useful here</p><a name=
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"action03" id="action03"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Silvia to flesh out how far can we go
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with a hash URI regarding the interaction between the UA and
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the server [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-4 -
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Flesh out how far can we go with a hash URI regarding the
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interaction between the UA and the server [on Silvia Pfeiffer -
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due 2008-10-15].</p>
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<p class='phone'><cite>Erik:</cite> Fragment Name and
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Description</p>
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<p class='phone'>Raphael and Silvia agree on non-semantics of
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the labels</p>
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<p class='phone'><cite>Erik:</cite> Status of a Media
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Fragment</p>
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<p class='irc'><<cite>raphael</cite>> Problem with ? is
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that the query is a new resource, or at least no formal
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connexion between the fragment and the parent resource</p>
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<p class='irc'><<cite>raphael</cite>> Yves, can you put
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on IRC the link of the draft you're talking about?</p>
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<p class='irc'><<cite>Yves</cite>> <a href=
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"http://www.mnot.net/drafts/draft-nottingham-http-link-header-01.txt">
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http://www.mnot.net/drafts/draft-nottingham-http-link-header-01.txt</a></p>
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<p class='irc'><<cite>nessy</cite>> <a href=
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"http://www.ietf.org/rfc/rfc3986.txt">http://www.ietf.org/rfc/rfc3986.txt</a></p>
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<p class='irc'><<cite>raphael</cite>> Yves, would you
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like to take an action for checking the status of ';' in a
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URI?</p>
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<p class='irc'><<cite>Yves</cite>> sure</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: ByteRanges
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has advantages (cachable, proxies, etc.) and I'm all for the
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'#' but 8 years ago, I found the limit of the hash
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URI</p><a name="action04" id="action04"></a>
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<p class='irc'><<cite>scribe</cite>>
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<strong>ACTION:</strong> Yves to check the status of ';' in a
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URI [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04</a>]</p>
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<p class='irc'><<cite>trackbot</cite>> Created ACTION-5 -
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Check the status of ';' in a URI [on Yves Lafon - due
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2008-10-15].</p>
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<p class='phone'><cite>Erik:</cite> Protocols</p>
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<p class='irc'><<cite>raphael</cite>> Yves notes that
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defining a range unit as as easy as defining a new header</p>
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<p class='irc'><<cite>raphael</cite>> +1 for learning how
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RTSP fragments work</p>
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<p class='phone'><cite>Sivia:</cite> my in-line action here is
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well covered</p>
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<p class='phone'><cite>Erik:</cite> Server, Caches and
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Proxies</p>
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<p class='phone'><cite>Silvia:</cite> would be nice to find a
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generic way<br />
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... however, seems not too realistic</p>
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<p class='irc'><<cite>raphael</cite>> Silvia: would
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propose to cover HTTP (+ HTTPs, FTP)</p>
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<h3 id="item03">3. USE CASES</h3>
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<p class='phone'><cite>Erik:</cite> going through UCs</p>
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<p class='phone'><cite>Raphael:</cite> working on the Map and
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Multi Resolution UC<br />
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... zoomify providing input</p>
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<h3 id="item04">4. STATE OF THE ART</h3>
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<p class='phone'>-> <a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/State_of_the_Art">
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http://www.w3.org/2008/WebVideo/Fragments/wiki/State_of_the_Art</a></p>
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<h3 id="item05">5. AOB</h3>
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<p class='phone'><cite>Erik:</cite> put logistics and agenda
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for second F2F in Gent are online</p>
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<p class='irc'><<cite>raphael</cite>> Logisitics page:
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<a href=
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"http://www.w3.org/2008/WebVideo/Fragments/wiki/GhentLogistic">http://www.w3.org/2008/WebVideo/Fragments/wiki/GhentLogistic</a></p>
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<p class='irc'><<cite>raphael</cite>> IMPORTANT: book
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your hotel before Nov 8th for getting the discount !!!</p>
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<p class='irc'><<cite>nessy</cite>> +q</p>
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<p class='phone'><cite>Silvia:</cite> file upload enabled?</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> Davy and Erik to
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document container formats [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> Raphael to look
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into image maps spec re spatial fragment shape [recorded in
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<a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> Silvia to flesh
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out how far can we go with a hash URI regarding the interaction
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between the UA and the server [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03</a>]<br />
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<strong>[NEW]</strong> <strong>ACTION:</strong> Yves to check the
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status of ';' in a URI [recorded in <a href=
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"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04</a>]<br />
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<br />
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[End of minutes]<br />
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<address>
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Minutes formatted by David Booth's <a href=
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$Date: 2008/10/08 13:04:53 $
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