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<title>Media Fragments Working Group Teleconference -- 16 Jun
2010</title>
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<h1>- DRAFT -</h1>
<h1>Media Fragments Working Group Teleconference</h1>
<h2>16 Jun 2010</h2>
<p><a href=
'http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda'>Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2010/06/16-mediafrag-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>Jack, Yves, Rapha�l, Erik, Davy, Wim, Frank</dd>
<dt>Regrets</dt>
<dd>Michael</dd>
<dt>Chair</dt>
<dd>Erik, Rapha�l</dd>
<dt>Scribe</dt>
<dd>jack</dd>
</dl>
</div>
<h2>Contents</h2>
<ul>
<li>
<a href="#agenda">Topics</a>
<ol>
<li><a href="#item01">1. Protocol Handling (cont.)</a></li>
<li><a href="#item02">2. ISSUE-4: Discovery of Track and
Named fragments</a></li>
<li><a href="#item03">3. ISSUE-5</a></li>
<li><a href="#item04">4. ISSUE-6</a></li>
<li><a href="#item05">5. ISSUE-7</a></li>
<li><a href="#item06">6. ISSUE-12</a></li>
<li><a href="#item07">7. Section 4.1</a></li>
<li><a href="#item08">8. Internaitonalization</a></li>
<li><a href="#item09">9. ISSUE-14</a></li>
<li><a href="#item10">10. Last Call Resolution</a></li>
<li><a href="#item11">11. 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: 16 June
2010</p>
<p class='irc'><<cite>Yves</cite>> SCribe: jack</p>
<p class='irc'><<cite>Yves</cite>> ScribeNick:
hackerjack</p>
<p class='irc'><<cite>scribe</cite>> agenda: <a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda">
http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda</a></p>
<p class='irc'><<cite>scribe</cite>> agenda: <a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda">
http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda</a></p>
<p class='phone'>trackbot start teleconf</p>
<p class='phone'><cite>Raphael:</cite> About Silvia's mail of
yesterday: BNF is incomplete when only the "include-setup" is
returned.</p>
<p class='phone'><cite>All:</cite> agree. Yves to fix it
now.</p>
<h3 id="item01">1. Protocol Handling (cont.)</h3>
<p class='phone'><cite>Erik:</cite> Let's revisit the redirect
idea for track and id we discussed yesterday.<br />
... for id it seems to be a good idea, but for track we could
go both ways (redirect or direct implementation)</p>
<p class='irc'><<cite>raphael</cite>> Room: discussing
again the pro/cons of the track + id handling</p>
<p class='irc'><<cite>raphael</cite>> ... track is now
handled as ID, and not as time</p>
<p class='irc'><<cite>raphael</cite>> ... the redirect to
query is a fallback solution just because the proble is that we
will have too many characters in HTTP headers</p>
<p class='irc'><<cite>raphael</cite>> Raphael: should we
document two solutions for handling track ... one using the
redirect and another one similar to time?</p>
<p class='irc'><<cite>raphael</cite>> Jack: well, in this
case, we are re-introducing the problem for caching cascading
projections</p>
<p class='irc'><<cite>raphael</cite>> Erik: the only
cascading problem will be track + time</p>
<p class='irc'><<cite>raphael</cite>> Jack: rationale, if
we go the redirect way, the spec is finished today, and we can
take it out</p>
<p class='irc'><<cite>raphael</cite>> ... if we go with
Davy's solution, then more work is needed, we do not know how
cache will behave</p>
<p class='irc'><<cite>raphael</cite>> Jack: most of the
use cases will be time selection, some will be track selection,
combination will be even rarer</p>
<p class='irc'><<cite>raphael</cite>> Jack: how robust is
our current text for caching tracks? We need more
implementation experience</p>
<p class='phone'><cite>All:</cite> discussion about
cacheability (by classic caches) of multipart</p>
<p class='phone'><cite>Erik:</cite> maybe we shoulnd't worry
too much about old-style caches: there will be a strong push
towards mf-aware (once mf is popular)</p>
<p class='irc'><<cite>raphael</cite>> Discussing:
<a href="http://www.w3.org/2010/06/15-mediafrag-minutes.html#item06">
http://www.w3.org/2010/06/15-mediafrag-minutes.html#item06</a></p>
<p class='phone'><cite>Jack:</cite> explaining the issues of
yesterday and this morning to Silvia, and sketching tradeoffs
(elegance versus quick publishing)</p>
<p class='phone'><cite>Silvia:</cite> we shouldn't worry
overmuch about cache implementation in our LC spec. We need
implementations before we can be<br />
... sure our text is sorrect.<br />
... issue with redirect, specifically with redirect leading to
new resource.</p>
<p class='phone'><cite>Jack:</cite> but client knows about the
linking to the old one.</p>
<p class='phone'><cite>Silvia:</cite> that is a hack.</p>
<p class='irc'><<cite>silvia</cite>> Silvia: I think that
if you have a #track URL in the browser and get redirected to
the ?track URL, it may not remember the context, because you
have loaded a new resource</p>
<p class='irc'><<cite>silvia</cite>> … so, getting back
to the original resource and its tracks may be impossible</p>
<p class='irc'><<cite>silvia</cite>> … also, I am not too
worried about these things yet, because I would wait and see
what browser vendors implement</p>
<p class='irc'><<cite>silvia</cite>> … it is good for us
to identify these issues, but I'm not sure we can solve them
fully</p>
<p class='irc'><<cite>silvia</cite>> .. without
implementations we won't have the answer to everything now</p>
<p class='irc'><<cite>silvia</cite>> … for #track, I
would offer both options to browser vendors, then see how they
go ;)</p>
<p class='irc'><<cite>raphael</cite>> OK Silvia</p>
<p class='irc'><<cite>raphael</cite>> we plan to enforce
also the use of a Link header ... so context towards the
original resource is here!</p>
<p class='irc'><<cite>raphael</cite>> Silvia: <a href=
"http://www.web-polygraph.org/docs/userman/ranges.html">http://www.web-polygraph.org/docs/userman/ranges.html</a>
<- looks like it supports multiple byte ranges</p>
<p class='irc'><<cite>raphael</cite>> Silvia: but that
might be a server and not a proxy...</p>
<p class='irc'><<cite>silvia</cite>> 5.2 has the
following paragraph:</p>
<p class='irc'><<cite>silvia</cite>> It is possible to
add an additional HTTP response header called "Link" that
refers the new resource back to the original resource and
enables the UA to retrieve further information about the
original resource, such as its full length. In this case, the
user agent is also enable to choose to display the dimensions
of the primary resource or the one created by the query.</p>
<p class='phone'><cite>Raphael:</cite> proposal. First, we
document the redirect option, specifically as an option (to be
used at the server's discretion) in stead of the "real"
implementation</p>
<p class='irc'><<cite>silvia</cite>> ok</p>
<p class='phone'><cite>Raphael:</cite> second,<br />
... we make sure that the spec correctly specifies fragmenting
of tracks<br />
... third, similar for ID</p>
<p class='irc'><<cite>silvia</cite>> I think a web
browser has actually 3 options:</p>
<p class='irc'><<cite>silvia</cite>> … 1. use byte
ranges</p>
<p class='irc'><<cite>silvia</cite>> … 2. use
redirect</p>
<p class='irc'><<cite>silvia</cite>> … 3. do locally</p>
<p class='phone'>silvia, you dropped from the audio</p>
<p class='phone'><cite>All:</cite> discussion about whether
lots of small fragments will work for the clients anyway.</p>
<p class='phone'><cite>Silvia:</cite> talked to browser
vendors, they will probably get whole resourcce, because their
decoders may not handle it</p>
<p class='irc'><<cite>raphael</cite>> scribenick:
raphael</p>
<p class='phone'><cite>Summary:</cite> for the 3 dimensions,
time, track and id, they will be a double mechanism described
in the protocol<br />
... either a direct way as it is described in the spec<br />
... or as a redirect (30x reply) pointing to the same request
that replace the # by the ?<br />
... the second server reply MAY or MUST? contain a Link header
pointing to the original resource the new one is derived
from</p>
<p class='phone'><cite>PROPOSED:</cite> Documenting in the spec
the redirect mechanism in a new section 5.1.3 (that will point
to 5.2) as an option (to be used at the server's discretion)
and we make sure that the reader understands the two possible
options 5.1.2 and 5.1.3 at server discretion</p>
<p class='phone'><cite>Jack:</cite> proposed headline for new
section 5.1.3 = Server triggered redirect</p>
<p class='irc'><<cite>hackerjack</cite>> Davy: but there
is another issue with a redirect. The server has no way to
communicate to the client whether the returned new resource</p>
<p class='irc'><<cite>hackerjack</cite>> ... has the mf
completely applied or not. In the latter case the client would
still have work to do.</p>
<p class='irc'><<cite>Yves</cite>> issue with the
redirect is fragment handling on the redirected resource</p>
<p class='irc'><<cite>Yves</cite>> <a href=
"http://tools.ietf.org/html/draft-nottingham-http-link-header+10">
http://tools.ietf.org/html/draft-nottingham-http-link-header+10</a></p>
<p class='irc'><<cite>silvia</cite>> wouldn't the
redirect be to e.g. video.ogv?track=video#t=10,20 - then sent
to the server again by the client - then have all the
appropriate headers?</p>
<p class='irc'><<cite>silvia</cite>> it's an actual HTTP
redirect, right?</p>
<p class='phone'>Yes, it is a real redirect</p>
<p class='phone'><cite>scribe:</cite> the issue is: imagine
that the UA has just requested a track (#track=audio4)<br />
... the server cannot extract the track, but send a 307
pointing to the full resource<br />
... how the UA knows whether the redirects points to the track
it has originally requested or to the full resource?<br />
... Ninsuna proxy currently works like this, send a redirecto
to the full resource when it cannot extract the fragments</p>
<p class='irc'><<cite>silvia</cite>> but ours has a link
header?</p>
<p class='phone'><cite>scribe:</cite> idea would be to add a
link header in the 307 reply to convey this information</p>
<p class='phone'>I'm talking of the first reply, the 307, not
the second one with the actual data which has a Link header</p>
<p class='phone'><cite>Yves:</cite> for the second reply, I
suggest we use the property named 'alternate'<br />
... so syntax would be:</p>
<p class='phone'><cite>Link:</cite> <<a href=
"http://www.example.com/video.ogg#track=audio4%3E">http://www.example.com/video.ogg#track=audio4></a>
alternate</p>
<p class='phone'><cite>Jack:</cite> perhaps we should use
another term, it seems to me a hack<br />
... no, I fully agree now, Yves convinced me</p>
<p class='phone'><cite>Yves:</cite> for the first reply, the
307, we need a new term<br />
... e.g. fragment<br />
... so syntax would be:</p>
<p class='phone'><cite>Link:</cite> <<a href=
"http://www.example.com/video.ogg#track=audio4%3E">http://www.example.com/video.ogg#track=audio4></a>
fragment</p>
<p class='phone'><cite>Location:</cite> <a href=
"http://www.example.com/video.ogv">http://www.example.com/video.ogv</a><br />
... <a href=
"http://www.example.com/video.ogv?track=audio4">http://www.example.com/video.ogv?track=audio4</a></p>
<p class='phone'><cite>Vary:</cite> *<br />
... in order to not cache the 307 reply</p>
<p class='phone'><cite>Raphael:</cite> the description of how
it works should now be completed, back to the proposal</p>
<p class='phone'><cite>PROPOSED:</cite> Documenting in the spec
the redirect mechanism in a new section 5.1.3 (that will point
to 5.2) as an option (to be used at the server's discretion)
and we make sure that the reader understands the two possible
options 5.1.2 and 5.1.3 at server discretion</p>
<p class='phone'>let's vote</p>
<p class='irc'><<cite>hackerjack</cite>> +1</p>
<p class='irc'><<cite>davy</cite>> +1</p>
<p class='irc'><<cite>Wim</cite>> +1</p>
<p class='phone'>+1</p>
<p class='irc'><<cite>erik</cite>> +1</p>
<p class='irc'><<cite>Yves</cite>> +1</p>
<p class='irc'><<cite>hackerjack</cite>> rrsagent draft
minutes</p>
<p class='irc'><<cite>silvia</cite>> +1</p>
<p class='phone'><strong class='resolution'>RESOLUTION:
Documenting in the spec the redirect mechanism in a new section
5.1.3 (that will point to 5.2) as an option (to be used at the
server's discretion) and we make sure that the reader
understands the two possible options 5.1.2 and 5.1.3 at server
discretion</strong></p><a name="action01" id="action01"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Davy to edit a new section 5.1.3 named
"Server triggered redirect" that documents fully this solution
[recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action01">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action01</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-176
- Edit a new section 5.1.3 named "Server triggered redirect"
that documents fully this solution [on Davy Van Deursen - due
2010-06-23].</p>
<p class='irc'><<cite>hackerjack</cite>> Erik: admin
stuff. If we stop the normal agenda at 1400 that gives Davy
time to do the edits, us all to wrap up, and end at 5.</p>
<p class='irc'><<cite>hackerjack</cite>> Raphael: let's
drop test cases, not important for LC</p>
<p class='irc'><<cite>hackerjack</cite>> Raphael:
proposal: we allow for a testcase f2f in september, if
needed.</p>
<p class='irc'><<cite>hackerjack</cite>> Raphael:
proposal: after lunch we do the "wednesday morning agenda".</p>
<p class='phone'>[lunch break]</p>
<p class='irc'><<cite>scribe</cite>> scribenick:
raphael</p>
<h3 id="item02">2. ISSUE-4: Discovery of Track and Named
fragments</h3>
<p class='phone'>ISSUE-4?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-4 -- Should
we pre-define some track names? -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/4">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/4</a></p>
<p class='phone'><cite>Raphael:</cite> <a href=
"http://www.w3.org/WAI/PF/HTML/wiki/Media_MultitrackAPI">http://www.w3.org/WAI/PF/HTML/wiki/Media_MultitrackAPI</a><br />
... how do we know which tracks are available for
selection<br />
... could be extended to, how do we know which id/names are
available for selection</p>
<p class='phone'><cite>Yves:</cite> why do we care?<br />
... our task is to enable the construction of the selection and
the protocol handling<br />
... how the discovery is performed does not matter too us</p>
<p class='phone'><cite>Jack:</cite> all what we are saying is
that track names are UTF-8 strings</p>
<p class='irc'><<cite>silvia</cite>> I agree with Yves -
I think with point to things like ROE and the JavaScript API,
we have done all we can to propose a solution to discovery of
track names</p>
<p class='phone'><cite>Jack:</cite> we all agree, let's replace
the ed note in the section 4.3.3 by a paragraph stating that
they are no pre-defined track names<br />
... but we mention the existing discovery mechanism such as
ROE, Media Annotations, HTML5 MediaMultiTrack API</p>
<p class='phone'><cite>Davy:</cite> I'm editing the spec right
now</p>
<p class='irc'><<cite>hackerjack</cite>> Raphael: ok, all
agreed, Davy will fix the text</p>
<p class='phone'><cite>Raphael:</cite> can we close this
issue?</p>
<p class='irc'><<cite>silvia</cite>> yes, please</p>
<p class='phone'>comment ISSUE-4 track names discovery is
handled by others and we list example techniques</p>
<p class='phone'>close ISSUE-4</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-4 Should we
pre-define some track names? closed</p>
<h3 id="item03">3. ISSUE-5</h3>
<p class='phone'>ISSUE-5?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-5 --
Handling spatial cropping requires information at client-side
-- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/5">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/5</a></p>
<p class='phone'><cite>Raphael:</cite> is this clear that in
the case of the spatial dimension, nothing is sent to the
server?</p>
<p class='phone'><cite>Davy:</cite> yes<br />
... in 5.1.2<br />
... spatial media fragments are typically not expressible in
terms of byte ranges. Spatial fragment extraction would thus
require transcoding operations resulting in new resources
rather than fragments of the original media resource. As
described in section 3 URI fragment and URI query, spatial
fragment extraction is in this case better represented by URI
queries.</p>
<p class='phone'>comment ISSUE-5 not relevant anymore</p>
<p class='phone'>close ISSUE-5</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-5 Handling
spatial cropping requires information at client-side closed</p>
<h3 id="item04">4. ISSUE-6</h3>
<p class='phone'>ISSUE-6?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-6 --
Temporal clips that require transcoding -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/6">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/6</a></p>
<p class='phone'><cite>Erik:</cite> The section 3.1 is crystal
clear<br />
... Resources that are "fit" can therefore be addressed with a
URI fragment. Resources that are "conditionally fit" can be
addressed with a URI fragment with an additional retrieval
action that retrieves the modified syntax elements but leaves
the codec data untouched. Resources that are "unfit" require
transcoding. Such transcoded media fragments cannot be
addressed with URI fragments, but only with URI queries.<br />
... that closes the ISSUE<br />
... editor note needs to be removed?<br />
... link towards the UC doc needs to be modified<br />
... no link to fix</p>
<p class='phone'><cite>Davy:</cite> ed note removed</p>
<p class='phone'>close ISSUE-6</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-6 Temporal
clips that require transcoding closed</p>
<p class='phone'><cite>Jack:</cite> references are ugly, need
to fix this</p>
<p class='irc'><<cite>hackerjack</cite>> Jack: Issue is:
unmatch <a> element in the references, but xhtml
document.</p>
<h3 id="item05">5. ISSUE-7</h3>
<p class='phone'>ISSUE-7?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-7 -- User
Agent Media Fragment Resolution and Processing -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/7">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/7</a></p>
<p class='phone'><cite>Yves:</cite> this is the protocol
description<br />
... this is now done!</p>
<p class='phone'>comment ISSUE-7 This is the protocol
description now nicely described</p>
<p class='phone'>close ISSUE-7</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-7 User Agent
Media Fragment Resolution and Processing closed</p>
<h3 id="item06">6. ISSUE-12</h3>
<p class='phone'>ISSUE-12?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-12 -- What's
the relationship between Images (CSS) Sprites and the spatial
dimension of the Media Fragments URI scheme? -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/12">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/12</a></p>
<p class='phone'><cite>Raphael:</cite> use of the spatial
dimension for highlighting region (current implementation) or
cropping (sprite)</p>
<p class='phone'><cite>Jack:</cite> this is 2 different use
cases</p>
<p class='phone'><cite>Yves:</cite> no, the first intent is to
define a region ... and not to define what to do with it</p>
<p class='phone'><cite>Jack:</cite> yes, but in the temporal
case, we provide more information<br />
... perhaps in Section 7, we should write, "unlike the temporal
dimension ..."<br />
... I sugges to edit Section 7.1 to clarify this ...</p>
<p class='irc'><<cite>silvia</cite>> I agree</p>
<p class='phone'><cite>Jack:</cite> what I'm doing is changing
the paragraph "For a spatial URI fragment, it is recommended to
emphasize the spatial region during playback. For instance, the
spatial region could be indicated by means of a bounding box or
the background (i.e., all the pixels that are not contained
within the region) could be blurred or darkened. "<br />
... to state we have two use cases: 1/ highlight 2/
sprite<br />
... done</p>
<p class='phone'>comment ISSUE-12: the third paragraph of
Section 7.1 has been updated</p>
<p class='phone'>close ISSUE-12</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-12 What's
the relationship between Images (CSS) Sprites and the spatial
dimension of the Media Fragments URI scheme? closed</p>
<h3 id="item07">7. Section 4.1</h3>
<p class='phone'><cite>Raphael:</cite> is the pseudo algorithm
written by Philip useful?</p>
<p class='phone'>Yves and Jack: the pseudo code is useless</p>
<p class='phone'><cite>Erik:</cite> +1</p>
<p class='phone'><cite>Jack:</cite> we are not writing
workaround for existing sloppy implementations</p>
<p class='phone'><cite>Raphael:</cite> I see 3 options: a/
statu quo; b/ move 4.1.1 and 4.1.2 down in an Annex or in
Section 7? ; c/ remove these 2 sub-sections</p>
<p class='irc'><<cite>Yves</cite>> b, c</p>
<p class='irc'><<cite>davy</cite>> b, c</p>
<p class='irc'><<cite>hackerjack</cite>> b, c (in
order)</p>
<p class='phone'>b</p>
<p class='irc'><<cite>erik</cite>> b</p>
<p class='phone'><cite>Jack:</cite> new Appendix D: notes on
parsing media fragment URIs<br />
... I'm editing</p><a name="action02" id="action02"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> raphael to email philip about this
decision [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action02">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action02</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Sorry, couldn't
find user - raphael</p><a name="action03" id="action03"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> troncy to email philip about this
decision [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action03">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action03</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-177
- Email philip about this decision [on Raphaël Troncy - due
2010-06-23].</p>
<p class='phone'>close ACTION-177</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-177 Email
philip about this decision closed</p>
<p class='phone'><cite>Raphael:</cite> mail sent</p>
<p class='phone'><cite>Jack:</cite> I'm moving the editorial
note of Silvia in ex 4.1.2 into Section 7 and drafting a new
paragraph</p>
<h3 id="item08">8. Internaitonalization</h3>
<p class='phone'><cite>Raphael:</cite> Yves sent an email
yesterday to the i18n group<br />
... see <a href=
"http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0022.html">
http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0022.html</a><br />
... I suggest to open an Issue for tracking this</p>
<p class='phone'><cite>ISSUE:</cite> Media Fragment track names
and IRIs</p>
<p class='irc'><<cite>trackbot</cite>> Created ISSUE-17 -
Media Fragment track names and IRIs ; please complete
additional details at <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/17/edit">
http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/17/edit</a>
.</p>
<p class='phone'>Silvia suggested on the list to redefine the
production rules in terms of rfc 3987 rather than 3986</p>
<p class='phone'><cite>Yves:</cite> I think it would be more
difficult<br />
... we don't know the encoding, etc.<br />
... let's i18n fix this which touches several groups</p>
<h3 id="item09">9. ISSUE-14</h3>
<p class='phone'>ISSUE-14?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-14 -- How to
deal with embedded time stamps -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/14">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/14</a></p>
<p class='phone'><cite>Jack:</cite> for container-based
timestamps (which may have gaps), we think there is no
issue<br />
... gaps will be preserved so to speak<br />
... for the other case, smpte timestamps with labels ... it is
almost as id<br />
... there are many issues<br />
... not being 0 based is one issue, but you can also have
strange gaps<br />
... unclear what a media player will do with it<br />
... I'm adding a new sentence in the section 7.3<br />
... "SMPTE Timecodes: "<br />
... in order to close this issue</p>
<p class='phone'><cite>Room:</cite> problem regarding the units
requested versus the units used in the response<br />
... should it be enforced to be the same?<br />
... should we say something at all about this?</p>
<p class='phone'><cite>Yves:</cite> we say nothing since we
infer that people will use smpte time code know what they are
doing</p>
<p class='irc'><<cite>Yves</cite>> ISSUE-14?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-14 -- How to
deal with embedded time stamps -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/14">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/14</a></p>
<p class='phone'>close ISSUE-14</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-14 How to
deal with embedded time stamps closed</p>
<p class='irc'><<cite>Yves</cite>> ISSUE-16?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-16 --
Combining axis is probably not going to be done by LC, but we
should write somewhere that this is doable -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/16">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/16</a></p>
<p class='phone'><cite>Davy:</cite> the biggest issue was with
the spatial dimension</p>
<p class='irc'><<cite>Yves</cite>> issue-13?</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-13 -- Write
a IETF draft for proposing how to register the fragment scheme
for all media types -- open</p>
<p class='irc'><<cite>trackbot</cite>> <a href=
"http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/13">http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/13</a></p>
<p class='phone'><cite>Davy:</cite> we can close it since we
are doign combination now, e.g. track + time</p>
<p class='phone'>close ISSUE-16</p>
<p class='irc'><<cite>trackbot</cite>> ISSUE-16 Combining
axis is probably not going to be done by LC, but we should
write somewhere that this is doable closed</p>
<p class='phone'><cite>Yves:</cite> I have discussion with
larry masinter and IETF about this<br />
... we don't need this for Last Call</p>
<p class='irc'><<cite>scribe</cite>> ... ongoing
issue</p>
<p class='phone'><cite>UNKNOWN_SPEAKER:</cite> we need to
figure out what would be the process, in our own spec, in a
RFC, etc.</p>
<h3 id="item10">10. Last Call Resolution</h3>
<p class='irc'><<cite>hackerjack</cite>> +1</p>
<p class='irc'><<cite>Yves</cite>> +1</p>
<p class='phone'><cite>PROPOSED:</cite> the document is good
enough to be a Last Call</p>
<p class='irc'><<cite>davy</cite>> +1</p>
<p class='irc'><<cite>Yves</cite>> +1</p>
<p class='irc'><<cite>Wim</cite>> +1</p>
<p class='phone'>+1</p>
<p class='irc'><<cite>hackerjack</cite>> +1</p>
<p class='irc'><<cite>erik</cite>> +1</p>
<p class='phone'>Silvia has agreed also</p>
<p class='phone'>no objections</p>
<p class='irc'><<cite>erik</cite>> s/agrees/agreed</p>
<p class='irc'><<cite>Yves</cite>> see <a href=
"http://www.w3.org/2005/08/online_xslt/xslt?xmlfile=http://www.w3.org/2005/08/01-transitions.html&xslfile=http://www.w3.org/2005/08/transitions.xsl&docstatus=lc-wd-tr">
http://www.w3.org/2005/08/online_xslt/xslt?xmlfile=http://www.w3.org/2005/08/01-transitions.html&xslfile=http://www.w3.org/2005/08/transitions.xsl&docstatus=lc-wd-tr</a></p>
<p class='irc'><<cite>Yves</cite>> Silvia, please review
the doc (the one by end of this week)</p>
<p class='phone'><strong class='resolution'>RESOLUTION: Publish
the document as a Last Call Working Draft next
week</strong></p>
<p class='phone'><cite>Raphael:</cite> yves will complete his
actions by Sunday<br />
... davy will have finished 176 today<br />
... we need internal review</p>
<p class='phone'><cite>Erik:</cite> I suggest
Silvia</p><a name="action04" id="action04"></a>
<p class='irc'><<cite>scribe</cite>>
<strong>ACTION:</strong> Silvia to review the complete
document, remove unnecessary editorial notes before publication
[recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action04">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action04</a>]</p>
<p class='irc'><<cite>trackbot</cite>> Created ACTION-178
- Review the complete document, remove unnecessary editorial
notes before publication [on Silvia Pfeiffer - due
2010-06-23].</p>
<p class='phone'><cite>Raphael:</cite> we need to decide on
which groups we want and wish to have reviews from<br />
... MUST working groups: HTML WG, Media Annotations WG, SYMM,
Semantic Web CG, Hypertext CG, TAG, IETF<br />
... WISH to have additional reviews from: CSS, SVG, TimedText,
I18N, Audio XG</p>
<p class='phone'><cite>Yves:</cite> deadline for
comments?<br />
... end of August!</p>
<h3 id="item11">11. AOB</h3>
<p class='phone'><cite>Raphael:</cite> Media Annotations
LCWD<br />
... how do we make a group reply?<br />
... or do we make individual replies?</p>
<p class='phone'><cite>Jack:</cite> I want to read this with my
media fragments hat on<br />
... discuss by email about a group reply?<br />
... people comment on their own name<br />
... write replies to our group when this is common issues for
the MF WG</p>
<p class='phone'><cite>Raphael:</cite> LCWD of Media
annotations: Ontology = <a href=
"http://www.w3.org/TR/2010/WD-mediaont-10-20100608/">http://www.w3.org/TR/2010/WD-mediaont-10-20100608/</a><br />
... APi: <a href=
"http://www.w3.org/TR/2010/WD-mediaont-api-1.0-20100608/">http://www.w3.org/TR/2010/WD-mediaont-api-1.0-20100608/</a><br />
... we provide a group reply with all the collected issues that
interest the group<br />
... we dedicate one of the upcoming telecon about this</p>
<p class='irc'><<cite>erik</cite>> on behalf of the
chairs ... a BIG thanks to all contributors of this F2F ... LC
here we come :)</p>
<p class='phone'><cite>Davy:</cite> section 5.1.3 now
completed!</p>
<p class='phone'><cite>Room:</cite> reviewing ...</p>
<p class='irc'><<cite>erik</cite>> Thx Davy!</p>
<p class='phone'>close ACTION-176</p>
<p class='irc'><<cite>trackbot</cite>> ACTION-176 Edit a
new section 5.1.3 named "Server triggered redirect" that
documents fully this solution closed</p>
<p class='phone'><cite>Frank:</cite> perhaps add in the
reference section a ref to the Link Header</p>
<p class='irc'><<cite>davy</cite>> Added ref to the Web
Linking draft</p>
<p class='phone'>thanks davy</p>
<p class='phone'>Meeting successful</p>
<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> Davy to edit a
new section 5.1.3 named "Server triggered redirect" that
documents fully this solution [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action01">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action01</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> raphael to email
philip about this decision [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action02">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action02</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> Silvia to review
the complete document, remove unnecessary editorial notes before
publication [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action04">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action04</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> troncy to email
philip about this decision [recorded in <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html#action03">http://www.w3.org/2010/06/16-mediafrag-minutes.html#action03</a>]<br />
<br />
[End of minutes]<br />
<hr />
<address>
Minutes formatted by David Booth's <a href=
"http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm">
scribe.perl</a> version 1.135 (<a href=
"http://dev.w3.org/cvsweb/2002/scribe/">CVS log</a>)<br />
$Date: 2010/06/16 14:35:45 $
</address>
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<h2>Scribe.perl diagnostic output</h2>[Delete this section
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<pre>
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Check for newer version at <a href=
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Guessing input format: RRSAgent_Text_Format (score 1.00)
Succeeded: s/corect/sorrect/
Succeeded: s/=/+/
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Succeeded: s/Embedded/SMPTE/
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Found Scribe: jack
WARNING: No scribe lines found matching ScribeNick pattern: <jack> ...
Found ScribeNick: hackerjack
Found ScribeNick: raphael
Found ScribeNick: raphael
ScribeNicks: hackerjack, raphael
Default Present: Meeting_Room, silvia
Present: Jack Yves Rapha�l Erik Davy Wim Frank
Regrets: Michael
Agenda: <a href=
"http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda">http://www.w3.org/2008/WebVideo/Fragments/wiki/SixthF2FAgenda</a>
Found Date: 16 Jun 2010
Guessing minutes URL: <a href=
"http://www.w3.org/2010/06/16-mediafrag-minutes.html">http://www.w3.org/2010/06/16-mediafrag-minutes.html</a>
People with action items: davy raphael silvia troncy
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