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Re: {agenda} HTML WG media telecon 2014-02-04 - EME bug discussion

From: Mark Watson <watsonm@netflix.com>
Date: Mon, 3 Feb 2014 21:32:28 -0800
Message-ID: <CAEnTvdCB4KMQiOsw3fBy5_gwJAazATHVbW+iqKy5uH3=EG3DCw@mail.gmail.com>
To: Paul Cotton <Paul.Cotton@microsoft.com>
Cc: "public-html-media@w3.org" <public-html-media@w3.org>
All,

Regarding bug 24025 (Add optional configuration parameter to MediaKeys
constructor) there is a request for use-cases (actually on 24082). It seems
something which might be quite common is the need for the CDM to be
provided with a server certificate which would allow the CDM to encrypt its
messages to a specific server. Amongst other things this has user privacy
advantages.

I think this provides motivation for the proposal in 24025 and we might
even want to consider whether the server certificate use-case should be
explicitly supported in the specification.

...Mark


On Mon, Feb 3, 2014 at 7:35 PM, Paul Cotton <Paul.Cotton@microsoft.com>wrote:

> The HTML WG media teleconference meeting will occur on 2014-02-04 for up
> to 60 minutes from 15:00Z to 16:00Z.
>
> http://timeanddate.com/s/2j4x
>
> Tokyo midnight, Amsterdam/Oslo 17:00, London/Dublin 16:00, New Jersey/York
> 11:00, Kansas City 10:00, Seattle/San Francisco 08:00.
>
> Chair of the meeting: Paul Cotton
> Scribe: TBD
>
> (See the end of this email for dial-in and IRC info.)
>
> == Agenda ==
>
> 1. Roll call, introductions and selection of scribe
>
> 2. Previous meeting minutes
> Jan 28: http://www.w3.org/2014/01/28-html-media-minutes.html
>
>  3. Review of action items and issues
> https://www.w3.org/html/wg/media/track/
>
> a) ACTION-61: Work with wendy to make sure we get a security review [ Paul
> ]
> https://www.w3.org/html/wg/media/track/actions/61
> Status: Paul reached out to Wendy again on Jan 23:
> http://lists.w3.org/Archives/Public/public-html-media/2014Jan/0056.html
>
> b) ACTION-62: Report back about the plan for 20944 due 2013-12-15 [ Paul ]
> https://www.w3.org/html/wg/media/track/actions/62
> Status: No action yet but see developments on 20944:
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=20944#c34
> and subsequent replies.
>
> c) ACTION-63 - Provide a proposal for bug 24207 to define the shape of
> cleankey pssh boxes [on John Simmons - due 2014-01-28].
> https://www.w3.org/html/wg/media/track/actions/63
>
> 4. EME status and bugs
>
> a) Encrypted Media Extensions editor's draft
>
> http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html
> Last updated on Jan 27.
>
> b) Encrypted Media Extensions bugs:
> http://tinyurl.com/7tfambo
> Status as of Feb 3: 22 bugs
>
> c) EME heartbeat
> Status: Awaiting candidate WD from Editors.
>
> 5. EME bug status
> Note: Based on Adrian's bug status email:
> http://lists.w3.org/Archives/Public/public-html-media/2014Jan/0062.html
>
> a) Bug 17202 - Explicitly document how keys are to be shared
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=17202
> Next action: David to make changes in comment 3
> Status: Not yet implemented.
>
> b) Bug 17673 - Define Initialization Data for implementations that choose
> to support the ISO Base Media File Format
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=17673
> Next action: TF to discuss David's proposal that Microsoft supports to
> change the string associated with needkey/createSession
> Status from Jan 28 meeting:
> - Item for David to split off is about whether isTypeSupported is
> insufficient
> - Item for Adrian is to ask David Singer to review
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=17673#c38
>
> c) Bug 17682 - Clear Key: Document how keys and key IDs are associated
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=17682
> Next action: David to add note.
> Status: Not yet implemented.
>
> d) Bug 17750 - Define the behavior MediaKeySession close() and clearing
> the keys attribute
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=17750
> Next action: needs discussion about task handling
>
> e) Bug 18515 - Provide more details on behavior of the media element when
> the key for an encrypted block is not available
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=18515
> Status from Jan 28 meeting: Jerry to ask an Editor to implement.
>
> f) Bug 20944 - EME should do more to encourage/ensure CDM-level interop
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=20944
> Next action: ACTION-62 on Paul
>
> g) Bug 21798 - Revisit MediaKeyError codes
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=21798
> Status from Jan 28 meeting: Error codes and constants removed. New error
> names need to be proposed and added.
>
> h) Bug 23619 - Change MediaKeyError to extend DOMError and use strings for
> error names
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=23619
> Status from Jan 28 meeting: Adrian wanted more time to consider David's
> proposal in:
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=23619#c9
>
> i) Bug 23827 - Need to add features at risk prior to entry into Candidate
> Recommendation
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=23827
> Next action: wait until LC
>
> j) Bug 23828 - HTMLSourceElement with |keySystem| attribute should create
> MediaKeys object for |keySystem|
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=23828
> Next action: Adrian to make changes (low priority - see 23827)
>
> k) Bug 24025 - Add optional configuration parameter to MediaKeys
> constructor
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24025
> Next action: discuss as part of 24082 below. Tied to the general
> extensibilty issue.
>
> l) Bug 24082 - Several issues discussed in the TF point to the need for
> defined extensibility points in EME
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24082
> Next action: TF agreed that members need to propose use cases - not
> blocking and lower priority
>
> m) Bug 24026 - Document that URLs (destinationURL) should/may be validated
> and/or normalized
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24026
> Next action: David to add proposed text (to bug or spec)
>
> n) Bug 24027 - Define a generic Initialization Data solution for ISO Base
> Media File Format and/or Common Encryption (will be used by Clear Key)
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24027
> Next action: ACTION-63 on John to make proposal - there has been a
> proposal made by Pavel with comments from David
> Status from Jan 28 meeting: Adrian suggested John should review Pavel's
> proposal.
>
> o) Bug 24081 - The READY state is too limiting and should be more like the
> PENDING state
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24081
> Next action: TF to discuss David's proposal (Microsoft is supportive)
> Status from Jan 28 meeting: David to implement his proposal.
>
> p) Bug 24216 - setMediaKeys() needs more specification
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24216
> Next action: TF needs to review and discuss - I know Jerry is looking at
> this for Microsoft and waiting for feedback internally
>
> q) Bug 24270 - Make MediaKeySession State Definitions and Event Summary
> sections non-normative
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24270
> Next action: confirm we have consensus to make this change and then make it
> Status from Jan 28: David made a partial change. "We should also make the
> Event Summary section non-normative."
>
> r) Bug 24322 - Reorganize spec by object
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24322
> Next action: significant editorial change just needs editing - not blocking
>
> s) Bug 24323 - Rename "First Time a Key Reference is Encountered"
> algorithm and remove key ID checks from Container Guidelines subsections
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24323
> Next action: Feedback needed from TF
>
> t) Bug 24368 - Define playback behavior when the key for an encrypted
> block is not available for a subset of streams
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24368
> Next action: Feedback needed from TF
> Status from Jan 28 meeting: Jerry to review the proposal.
>
> u) Bug 24381 - HTMLMediaElement.setMediaKeys() appears superfluous
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24381
> Status from Jan 28 meeting: Adrian believes this is a duplicate but needs
> to find the original bug.
>
> v) Bug 24419 - Clear Key: Define license request format
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24419
> Status from Jan 28 meeting:  Not discussed.
>
> 6. Any other business
>
> 7. Chair and Scribe for next meeting
>
> 8. Adjournment
>
> == Dial-in and IRC Details ==
>
> Zakim teleconference bridge:
>    +1.617.761.6200, conference 63342 ("media")
> https://www.w3.org/Guide/1998/08/teleconference-calendar#s_5366
>
> Supplementary IRC chat (logged):
>    #html-media on irc.w3.org port 6665 or port 80 Paul Cotton, Microsoft
> Canada
> 17 Eleanor Drive, Ottawa, Ontario K2E 6A3
> Tel: (425) 705-9596 Fax: (425) 936-7329
>
> Paul Cotton, Microsoft Canada
> 17 Eleanor Drive, Ottawa, Ontario K2E 6A3
> Tel: (425) 705-9596 Fax: (425) 936-7329
>
>
>
Received on Tuesday, 4 February 2014 05:32:57 UTC

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