[MEDIA_PIPELINE_TF] minutes - 21 June 2012

available at:
  http://www.w3.org/2012/06/21-webtv-minutes.html

also as text below.

Thanks a lot for taking these minutes, David!

Kazuyuki

---
[1]W3C

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

                                - DRAFT -

                    Media Pipeline Task Force Teleconf

21 Jun 2012

    [2]Agenda

       [2] 
http://www.w3.org/2011/webtv/wiki/MPTF/Agenda_Telco_20th_June_2012

Attendees

    Present
           Clarke, Dave_Mays, duncanr, johnsim-microsoft, acolwell,
           nisc, Bob, ddorwin, Kazuyuki

    Regrets
    Chair
           Clarke

    Scribe
           davidmays

Contents

      * [3]Topics
          1. [4]Bug Review
          2. [5]review changes to Content Protection requirements
      * [6]Summary of Action Items
      __________________________________________________________

Bug Review

    Clarke: checked yesterday, no updates on bugs
    ... latest was mid to end of May

review changes to Content Protection requirements

    <Clarke> CP Requirements:
    [7]http://dvcs.w3.org/hg/webtv/raw-file/tip/mpreq/MPTF-CP-Requi
    rements.html

       [7] 
http://dvcs.w3.org/hg/webtv/raw-file/tip/mpreq/MPTF-CP-Requirements.html

    Clarke: finished filling out the draft doc, probably needs some
    cleanup
    ... changes are in the use cases
    ... everyone please read through in the next week and provide
    comments back
    ... once this is done, MPTF work should be on-demand
    ... we should be able to disband soon
    ... reviewing UC 4.2.2
    ... added implementation, motivation and dependencies

    <ddorwin> do you expect to switch in the same stream?

    <ddorwin> without a load()?

    <ddorwin> switch content protection systems in the stream?

    <ddorwin> that would be very problematic for implementations

    Johnsim: common thing would be going from protected to
    unprotected and back

    Clarke: less likely, but also possible, ads could be protected
    with a different scheme than the primary content
    ... moving on to 4.2.3

    <ddorwin> This assumes content is encoded in a CDM-specific
    way, which we want to avoid.

    <ddorwin> (bullet 2)

    Johnsim: not possible to have open-source DRM

    <ddorwin> Is this referring to something like Clear Key (in the
    EME proposal)?

    Johnsim: is the requirement meant to cause a UA to expose a
    third-party CDM, rather than providing an implementation?
    ... if UA is implementing ClearKey, that's fine
    ... we should amend the requirement to make it more clear and
    unambiguous

    Clarke: no problem specifying Clearkey here. That will make it
    easier to understand

    davidmays: please expand CDM with a definition

    Clarke: moving on to 4.2.4

    <ddorwin> I think that last sentence you said is worth
    including in this section.

    Johnsim: what do you mean by credentials here?
    ... there are lots of different ways credentials get
    communicated

    Johnsim: is this requirement implying that the browser is
    required to store literal login/password credentials

    Clarke: tried to make it clear in bullet 3
    ... should not be limited by the browser

    davidmays: maybe replace "credentials" with "authorization
    assertion"

    Johnsim: agreeing with authorization assertion

    Clarke: I'll put that in there
    ... moving on to 4.2.5
    ... this is just here to make sure it works for both adaptive
    and non-adaptive content

    davidmays: i think the term "copy protection system" is a
    little too specific

    Clarke: ok I will change that
    ... we will turn this in, and then we will basically be done

    <Clarke> Thanks, David,

    no problem

    bye

    <kaz> [ adjourned ]

Summary of Action Items

    [End of minutes]
      __________________________________________________________


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Received on Thursday, 21 June 2012 16:20:23 UTC