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Re: Media Fragments Working Group: Agenda 01 April, Telecon 0900 UTC

From: Michael Hausenblas <michael.hausenblas@deri.org>
Date: Wed, 01 Apr 2009 04:37:09 +0100
To: RaphaŽl Troncy <Raphael.Troncy@cwi.nl>, Media Fragment <public-media-fragment@w3.org>
CC: Erik Mannens <erik.mannens@ugent.be>
Message-ID: <C5F89FF5.34CB%michael.hausenblas@deri.org>

Regrets. Deadline surfing. From next week on I'll be all yours ...

Cheers,
      Michael

-- 
Dr. Michael Hausenblas
DERI - Digital Enterprise Research Institute
National University of Ireland, Lower Dangan,
Galway, Ireland, Europe
Tel. +353 91 495730
http://sw-app.org/about.html
http://webofdata.wordpress.com/


> From: RaphaŽl Troncy <Raphael.Troncy@cwi.nl>
> Organization: CWI
> Date: Tue, 31 Mar 2009 00:03:27 +0200
> To: Media Fragment <public-media-fragment@w3.org>
> Cc: Erik Mannens <erik.mannens@ugent.be>
> Subject: Media Fragments Working Group: Agenda 01 April, Telecon 0900 UTC
> Resent-From: Media Fragment <public-media-fragment@w3.org>
> Resent-Date: Mon, 30 Mar 2009 22:04:19 +0000
> 
> Dear Media Fragmenters,
> 
> Please, find below the agenda for this week telecon. Please, note that
> Europeans are back to the *old* hour, but *NOT* Silvia and Conrad. Use
> the link below to see the telecon hour depending on your time zone.
> 
> The scribe will be Silvia (Guillaume is on deck), please, make sure you
> can make it! Yves has sent regrets.
> Best regards.
> 
>    Erik & RaphaŽl
> 
> ------------
> 
> AGENDA Teleconference
> W3C Media Fragments Working Group telephone conference 2009-04-01
> 
> -------------------------------------------------------------------
> Wednesday, 01 April *09:00-10:00 UTC*
> Local time:
> http://www.timeanddate.com/worldclock/fixedtime.html?day=01&month=04&year=2009
> &hour=09&min=00&sec=0&p1=0
> 01 April 2009, 0900 UTC
>                    0200 (West US)
>                    0500 (East US)
>  1000 (Galway)
>                    1100 (Amsterdam)
>                    1800 (Seoul)
>                    2000 (Sydney)
> Bridge US: +1-617-761-6200 (Zakim)
> Bridge FR: +33.4.89.06.34.99
> Bridge UK: +44.117.370.6152
> Conference code : 3724# (spells "FRAG")
> Duration : 60 minutes
> -------------------------------------------------------------------
> IRC channel          : #mediafrag on irc.w3.org:6665
> W3C IRC Web Client   : http://www.w3.org/2001/01/cgi-irc
> Other clients are listed at http://www.w3.org/Project/IRC/#Client
> Zakim information    : http://www.w3.org/2002/01/UsingZakim
> Zakim bridge monitor : http://www.w3.org/1998/12/bridge/Zakim.html
> Zakim IRC bot        : http://www.w3.org/2001/12/zakim-irc-bot.html
> -------------------------------------------------------------------
> 
> Chair: Raphael, Erik
> ScribeList: http://www.w3.org/2008/WebVideo/Fragments/wiki/ScribeList
> Scribe: Silvia (On Deck: Guillaume, Michael)
> Regrets: Yves
> 
> Please note that Media Fragments WG telecons are for attendance by
> members and invited experts only.
> 
> 1. ADMIN:
> * Roll call
> * PROPOSED to accept the minutes of the 25th March 2009 telecon:
> http://www.w3.org/2009/03/25-mediafrag-minutes.html
> * Telecon hour: should we move to 1000 UTC? 1100 UTC?
> 
> 2. Upcoming F2F Meeting in Barcelona:
> * ACTION-50 Erik to Inquire about attendance for the upcoming f2f
> * Agenda building
> http://www.w3.org/2008/WebVideo/Fragments/wiki/ThirdF2FAgenda
> 
> 3. PREPARATION OF WORKING DRAFT
> See: http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-reqs/
> 
> 3.1 Syntax:
> * ACTION-49: Yves to Draft the HTTP-Range syntax for different units
> (completing all the syntax for the two way handshake)
> * Errors found by Jack while implementing:
> . Don't put single quote (') in an utf8string,
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0076.html
> . Don't put sub-delims (e.g. &) in an utf8string,
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0077.html
> . Spell 'percent' instead of using the '%' character,
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0077.html
> 
> 3.2 Existing Technologies Survey (Erik)
> * ACTION-51: Erik to Summarize the content of the wiki page to put in
> the main document, with few examples and a short story
> 
> 3.3 HTTP implementation (Raphael)
> See: http://www.w3.org/2008/WebVideo/Fragments/wiki/HTTP_implementation
> * ACTION-52: Raphael to Replace all examples in the HTTP implementation
> wiki page with the video Jack took
> 
> 3.4 Use Cases & Requirements Discussion: (Silvia)
> See:
> 
http://www.w3.org/2008/WebVideo/Fragments/wiki/Use_Cases_%26_Requirements_Draf>
t
> Reviews:
>    . Raphael:
> http://lists.w3.org/Archives/Public/public-media-fragment/2008Nov/0044.html
>    . Jack:
> http://lists.w3.org/Archives/Public/public-media-fragment/2008Nov/0053.html
>    . Guillaume:
> http://lists.w3.org/Archives/Public/public-media-fragment/2008Nov/0076.html
>    . Davy:
> http://lists.w3.org/Archives/Public/public-media-fragment/2008Dec/0007.html
> 
> 4. Implementation:
> * ACTION-34: Jack to look at python-url library to see whether he could
> implement the logic on client side
> * ACTION-35: Raphael to look at curl and/or wget to see whether the
> logic could be implemented on client side
> * ACTION-53: Jack to Check whether ffmpeg can slide movies easily, need
> for implementation on client and server side
> See also: 
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0061.html
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0066.html
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0068.html
> http://lists.w3.org/Archives/Public/public-media-fragment/2009Mar/0085.html
> Summary:
>    . Issue related to transcoding: is it allowed when cropping or not?
> Does ffmpeg produce only transcoded versions of a fragment, which
> triggers a problem when caching the resource? How ffmpeg does
> communicate the exact timeframe returned after the clipping operation
> (often different from the client request)? How the audio and video sync
> is guaranteed, see also http://wiki.xiph.org/OggSkeleton Does ffmpeg
> have problem with spatial cropping only when a percentage relative
> values are used?
>    . Issue related to spatial cropping: where that happens (client or
> server side)? how to communicate the original size when using percentage
> values?
> 
> 5. ISSUES
> * ISSUE-3 [Michael]: Does our MF URI syntax imply that we need to update
> MIME Type
> registrations?
> http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/3
> ** Some related discussion on the TAG mailing list (started by Michael):
>    - Thread http://lists.w3.org/Archives/Public/www-tag/2009Feb/0074.html
>    - Thread http://lists.w3.org/Archives/Public/www-tag/2009Feb/0183.html
> ** ACTION-42: Michael to dig deeper into the video/* issue proposed by TimBL
> ** ACTION-47: Michael to write the options related to the semantics of
> media fragments and the procedure on the wiki
> 
> * ISSUE-4 [Silvia]: Should we pre-define some track names?
> http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/4
> 
> 6. AOB
> 
> -- 
> RaphaŽl Troncy
> CWI (Centre for Mathematics and Computer Science),
> Kruislaan 413, 1098 SJ Amsterdam, The Netherlands
> e-mail: raphael.troncy@cwi.nl & raphael.troncy@gmail.com
> Tel: +31 (0)20 - 592 4093
> Fax: +31 (0)20 - 592 4312
> Web: http://www.cwi.nl/~troncy/
> 
> 
Received on Wednesday, 1 April 2009 03:53:19 GMT

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