[MEDIA_PIPELINE_TF] minutes - 31 May 2012

available at:

also as text below.

Thanks for taking these minutes, Jason.




      [1] http://www.w3.org/

                               - DRAFT -

                Media Pipeline Task Force Teleconference

31 May 2012


      [2] http://www.w3.org/2011/webtv/wiki/MPTF/Agenda_Telco_31st_May_2012

   See also: [3]IRC log

      [3] http://www.w3.org/2012/05/31-webtv-irc


          Clarke, Mark_Vickers, Kaz, Niklas, Kevin, Bob, John,
          Clarke, Franck(?), ddolwin(?), Jason, Mark_Vickers, Kaz,
          Niklas, Kevin, John, Bob, Juhani, Joe, Mark_Watson,
          Glenn, Aaron




     * [4]Topics
         1. [5]Discussion about video in RTC context and whether
            we need to harmonize approaches
         2. [6]Bug review
     * [7]Summary of Action Items

Discussion about video in RTC context and whether we need to
harmonize approaches

   Clarke: Agenda. Talk about collaboration with web RTC

   <kaz> [8]Clarke's message on WebRTC

      [8] http://lists.w3.org/Archives/Public/public-web-and-tv/2012May/0027.html

   MarkV: Issue is I don't see distinction or clear line between
   RTC webcam video or video playback
   ... it would be better if all these were handled in a
   consistent way

   Bob: the web rtc new API but don't think there is a fundamental
   disprepancy in approach

   Clarke: seems like we should still follow up and review our
   requirements and compare with RTC specs to see if they still

   <Johnsim> [9]http://www.w3.org/TR/2011/WD-webrtc-20111027/

      [9] http://www.w3.org/TR/2011/WD-webrtc-20111027/

   John: review of their working draft would be a good next step.

   <kaz> [10]http://www.w3.org/TR/2012/WD-webrtc-20120209/ is the
   latest one?

     [10] http://www.w3.org/TR/2012/WD-webrtc-20120209/

   <kaz> [11]WebRTC participants list

     [11] https://www.w3.org/2000/09/dbwg/details?group=47318

   All: discussion about how to find someone to review the spec.
   Is there anyone who is on the web RTC group? or any volunteers
   to join?

   <kaz> [12]by member company

     [12] https://www.w3.org/2000/09/dbwg/details?group=47318&order=org

   Clark: we'll put out a call to see if we can get someone to
   work on this

   Kaz: there is a newer February public draft that should be

   <kaz> not a LCWD, but an ordinary wd

Bug review

   Clark: Some activity on bug 12399 that we should review
   ... 13599 also, and we should discuss about how to handle

   Bob: problem is how can a user-agent convey data that is in
   text or metadata tracks
   ... made some proposals based on webm, ogg, mp4, mpeg2 ts

   <kaz> [13]Bug 13625

     [13] https://www.w3.org/Bugs/Public/show_bug.cgi?id=13625

   Bob: focus was how to make concise as possible so user agent
   can easily inspect

   <kaz> [14]Bug 13359

     [14] https://www.w3.org/Bugs/Public/show_bug.cgi?id=13359

   Bob: Is this going to be part HTML5? where is this going to be
   written down

   Mark: The transport specs could reference this. It makes sense
   for web browsers manufacturers to be able to refer to a central
   location. But agree it doesn't need to be in the HTML5 itself.
   Perhaps good place to be in WHATWG

   Bob: Don't think it belongs on the transport spec itself

   Clarke: like the idea of a list of pointers

   <Mark_Vickers> [15]http://wiki.whatwg.org/wiki/RelExtensions

     [15] http://wiki.whatwg.org/wiki/RelExtensions


     [16] http://microformats.org/wiki/existing-rel-values

   <Mark_Vickers> [17]http://wiki.whatwg.org/wiki/MetaExtensions

     [17] http://wiki.whatwg.org/wiki/MetaExtensions

   Bob: think the long explanation could be a W3C spec

   Mark: these examples show a collection of useful pointers and
   lists, see the RelExtensions. Seems we want to do something

   Bob: lets comment on bug a suggest this and bring up question
   on where to write this down
   ... order of tracks in track lists should be the same as the
   order the streams appear in their respective video formats

   Mark: should we add another bug about this lack of clarity?

   Kaz: HTML5 last call 2 date is not fixed yet

   Clarke: continuing to work through the changes on the
   requirements docs


     [18] https://www.w3.org/2002/09/wbs/1/html-media/results

   Clarke: feel it would be better to continue discussing next

   Joe: time for secure media 'sub' group is now posted. Looks
   like 8am PDT and the call will be chaired by Paul Cotton

   <kaz> [19]Paul Cotton's message

     [19] http://lists.w3.org/Archives/Public/public-html/2012May/0162.html

   <kaz> In the above message, Paul says:
   The time slot that raised the greatest participation AND the
   least dissent is Tuesday at 15:00 UTC:
   1500 UTC is 8am PDT, 11am EDT, 5pm Paris, 11pm Beijing,
   12midnight Tokyo/Seoul, 1am Sydney, 3am Auckland
   Based on these poll results the WG Chairs have decided to
   convene the first HTML WG Media teleconference on Tue Jun 12 at
   1500 UTC. After Jun 12 this teleconference will occur weekly.
   I will Chair the first meeting and will send out an agenda for
   this meeting before Fri June 8. I will work with the editors of
   the Encrypted Media [$1\47] and Media Source [$1\47] proposals
   to set the agendas for the initial meetings.

   <kaz> tx, jason!

   <Clarke> Thanks for scribing, Jason

   <kaz> [ adjourned ]

Summary of Action Items

   [End of minutes]

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Received on Thursday, 31 May 2012 16:22:18 UTC