08-mediafrag-minutes.html
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<title>Media Fragments Working Group Teleconference -- 08 Oct
2008</title>
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<h1>Media Fragments Working Group Teleconference</h1>
<h2>08 Oct 2008</h2>
<p><a href=
'http://lists.w3.org/Archives/Public/public-media-fragment/2008Oct/0040.html'>
Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2008/10/08-mediafrag-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>Erik, Raphael, Yves, Thierry, Davy, Silvia, Michael</dd>
<dt>Regrets</dt>
<dd>Jack</dd>
<dt>Chair</dt>
<dd>Erik</dd>
<dt>Scribe</dt>
<dd>Michael</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. ISSUES</a></li>
<li><a href="#item03">3. USE CASES</a></li>
<li><a href="#item04">4. STATE OF THE ART</a></li>
<li><a href="#item05">5. AOB</a></li>
</ol>
</li>
<li><a href="#ActionSummary">Summary of Action Items</a></li>
</ul>
<hr />
<div class="meeting">
<p class='irc'><<cite>trackbot</cite>> Meeting: Media
Fragments Working Group Teleconference</p>
<p class='irc'><<cite>trackbot</cite>> Date: 08 October
2008</p>
<p class='irc'><<cite>raphael</cite>> Scribe: Michael</p>
<h3 id="item01">1. ADMIN</h3>
<p class='phone'><cite>Erik:</cite> Accept minutes?</p>
<p class='irc'><<cite>raphael</cite>> +1 for accepting
the minutes</p>
<p class='phone'>Yves will take care of the Wiki issue right
after call</p>
<p class='irc'><<cite>raphael</cite>> RESOLVED: minutes
from 2008/10/01 telecon accepted</p>
<h3 id="item02">2. ISSUES</h3>
<p class='phone'>-> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/Issues">http://www.w3.org/2008/WebVideo/Fragments/wiki/Issues</a>
Issues</p>
<p class='phone'><cite>Raphael:</cite> I've structured the
issue on the Wiki, most seem to concern all UC<br />
... temporal seem ok spatial is still open</p>
<p class='phone'><cite>Silvia:</cite> temporally connected
fragments?</p>
<p class='phone'><cite>Raphael:</cite> Video UC</p>
<p class='phone'><cite>Silvia:</cite> multiple URIs is hard to
deal with, though I see it is needed</p>
<p class='phone'><cite>Raphael:</cite> Thinking back of the
interview, edited in two parts</p>
<p class='irc'><<cite>raphael</cite>> Silvia points out
the complexity of multi-fragment URIs</p>
<p class='irc'><<cite>raphael</cite>> Given what Silvia
suggests, I think this issue is related to the playlist UC</p>
<p class='irc'><<cite>nessy</cite>> xspf = playlist
format</p>
<p class='irc'><<cite>raphael</cite>> The question boils
to: can a multi-fragment URI be implemented as a playlist? is
it the same thing?</p>
<p class='phone'><cite>Silvia:</cite> follow up on F2F</p>
<p class='phone'><cite>Erik:</cite> spatial fragment shape?</p>
<p class='phone'><cite>Raphael:</cite> Might be a matter of
complexity, maybe in the second phase of the WG?</p>
<p class='irc'><<cite>raphael</cite>> Silvia suggests to
look at the image maps specification</p>
<p class='phone'><cite>Raphael:</cite> will look into
it</p><a name="action01" id="action01"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Raphael to look into image maps spec
re spatial fragment shape [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Sorry, couldn't
find user - Raphael</p>
<p class='phone'><cite>Erik:</cite> containers and
substreams</p>
<p class='phone'><cite>Silvia:</cite> From HTTP POV we're
looking at resources<br />
... in the media POV a container<br />
... however re RTSP the format the container<br />
... should focus on HTTP</p>
<p class='phone'><cite>Raphael:</cite> Wouldn't is make sense
to list all container formats we want to deal with?</p>
<p class='phone'><cite>Davy:</cite> ack to support container
formats</p>
<p class='irc'><<cite>raphael</cite>> Is the Matroska
(mkv) format relevant for example?</p>
<p class='irc'><<cite>Yves</cite>> documenting what we
investigated is good for other people to find out where we are
coming from once we have a solution</p>
<p class='irc'><<cite>raphael</cite>> +1 for
documentation</p>
<p class='phone'>+1</p>
<p class='phone'>sorry, for whom?</p><a name="action02" id=
"action02"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Davy and Erik to document container
formats [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-3 -
And Erik to document container formats [on Davy Van Deursen -
due 2008-10-15].</p>
<p class='phone'><cite>Erik:</cite> In-context /
Out-of-context</p>
<p class='irc'><<cite>raphael</cite>> The wiki section is
badly phrased, should be rephrased</p>
<p class='irc'><<cite>Yves</cite>> the difference between
a fragment and a complete resource (which can be a part of
something bigger), depends mostly on the way we identify the
fragment</p>
<p class='phone'><cite>Erik:</cite> Representation and
Implementation Issues<br />
... URI Fragment / URI Query</p>
<p class='irc'><<cite>raphael</cite>> thanks Silvia, most
appreaciated you took this action</p>
<p class='irc'><<cite>Yves</cite>> I would note that ';'
is another separator that ca be useful here</p><a name=
"action03" id="action03"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Silvia to flesh out how far can we go
with a hash URI regarding the interaction between the UA and
the server [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-4 -
Flesh out how far can we go with a hash URI regarding the
interaction between the UA and the server [on Silvia Pfeiffer -
due 2008-10-15].</p>
<p class='phone'><cite>Erik:</cite> Fragment Name and
Description</p>
<p class='phone'>Raphael and Silvia agree on non-semantics of
the labels</p>
<p class='phone'><cite>Erik:</cite> Status of a Media
Fragment</p>
<p class='irc'><<cite>raphael</cite>> Problem with ? is
that the query is a new resource, or at least no formal
connexion between the fragment and the parent resource</p>
<p class='irc'><<cite>raphael</cite>> Yves, can you put
on IRC the link of the draft you're talking about?</p>
<p class='irc'><<cite>Yves</cite>> <a href=
"http://www.mnot.net/drafts/draft-nottingham-http-link-header-01.txt">
http://www.mnot.net/drafts/draft-nottingham-http-link-header-01.txt</a></p>
<p class='irc'><<cite>nessy</cite>> <a href=
"http://www.ietf.org/rfc/rfc3986.txt">http://www.ietf.org/rfc/rfc3986.txt</a></p>
<p class='irc'><<cite>raphael</cite>> Yves, would you
like to take an action for checking the status of ';' in a
URI?</p>
<p class='irc'><<cite>Yves</cite>> sure</p>
<p class='irc'><<cite>raphael</cite>> Silvia: ByteRanges
has advantages (cachable, proxies, etc.) and I'm all for the
'#' but 8 years ago, I found the limit of the hash
URI</p><a name="action04" id="action04"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Yves to check the status of ';' in a
URI [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-5 -
Check the status of ';' in a URI [on Yves Lafon - due
2008-10-15].</p>
<p class='phone'><cite>Erik:</cite> Protocols</p>
<p class='irc'><<cite>raphael</cite>> Yves notes that
defining a range unit as as easy as defining a new header</p>
<p class='irc'><<cite>raphael</cite>> +1 for learning how
RTSP fragments work</p>
<p class='phone'><cite>Sivia:</cite> my in-line action here is
well covered</p>
<p class='phone'><cite>Erik:</cite> Server, Caches and
Proxies</p>
<p class='phone'><cite>Silvia:</cite> would be nice to find a
generic way<br />
... however, seems not too realistic</p>
<p class='irc'><<cite>raphael</cite>> Silvia: would
propose to cover HTTP (+ HTTPs, FTP)</p>
<h3 id="item03">3. USE CASES</h3>
<p class='phone'><cite>Erik:</cite> going through UCs</p>
<p class='phone'><cite>Raphael:</cite> working on the Map and
Multi Resolution UC<br />
... zoomify providing input</p>
<h3 id="item04">4. STATE OF THE ART</h3>
<p class='phone'>-> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/State_of_the_Art">
http://www.w3.org/2008/WebVideo/Fragments/wiki/State_of_the_Art</a></p>
<h3 id="item05">5. AOB</h3>
<p class='phone'><cite>Erik:</cite> put logistics and agenda
for second F2F in Gent are online</p>
<p class='irc'><<cite>raphael</cite>> Logisitics page:
<a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/GhentLogistic">http://www.w3.org/2008/WebVideo/Fragments/wiki/GhentLogistic</a></p>
<p class='irc'><<cite>raphael</cite>> IMPORTANT: book
your hotel before Nov 8th for getting the discount !!!</p>
<p class='irc'><<cite>nessy</cite>> +q</p>
<p class='phone'><cite>Silvia:</cite> file upload enabled?</p>
</div>
<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
Items</a></h2><!-- Action Items -->
<strong>[NEW]</strong> <strong>ACTION:</strong> Davy and Erik to
document container formats [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action02</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> Raphael to look
into image maps spec re spatial fragment shape [recorded in
<a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action01</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> Silvia to flesh
out how far can we go with a hash URI regarding the interaction
between the UA and the server [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action03</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> Yves to check the
status of ';' in a URI [recorded in <a href=
"http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04">http://www.w3.org/2008/10/08-mediafrag-minutes.html#action04</a>]<br />
<br />
[End of minutes]<br />
<hr />
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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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