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{agenda} HTML WG media telecon 2014-04-01 - EME bug discussion

From: Paul Cotton <Paul.Cotton@microsoft.com>
Date: Tue, 1 Apr 2014 01:02:54 +0000
To: "public-html-media@w3.org" <public-html-media@w3.org>
Message-ID: <a6d1ef189b7940108d121e26aeeb724a@BL2PR03MB418.namprd03.prod.outlook.com>
The HTML WG media teleconference meeting will occur on 2014-04-01 for up to 60 minutes from 15:00Z to 16:00Z.



http://timeanddate.com/s/2kv8



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

Mar 18: http://lists.w3.org/Archives/Public/public-html-media/2014Mar/0033.html

Mar 4: http://lists.w3.org/Archives/Public/public-html-media/2014Mar/0013.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.



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 Mar 25.



b) Encrypted Media Extensions bugs:

http://tinyurl.com/7tfambo

Status as of Mar 31: 28 bugs



5. NEW EME bugs since the last meeting - Part 1



a) [NEW] Bug 25199 - EME should use Promises

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25199

Status: Blocks: 17750 21798 24081 24216 24771.



b) Bug 17750 - Define the behavior MediaKeySession close() and clearing the keys attribute

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17750

See recent response from Adrian since Feb 18 meeting:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17750#c26

Mar 4: Adrian agreed to implement this change.  Depends on 25199.



c) Bug 21798 - Revisit MediaKeyError codes

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21798

Status from Mar 4: David said he would make a proposal. Depends on 21599



d) 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. Depends on 21599.



e) Bug 24216 - setMediaKeys() needs more specification

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24216

David agreed to develop a proposal:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24216#c2

Status: Depends on 21599.



f) Bug 24771 - Provide guidance on object and CDM lifetime (including when events are guaranteed to be fired)

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24771

Status from Mar 18: Microsoft will review and enter their position.  Depends on 25199.



6. NEW EME bugs since the last meeting - Part 2



a) Bug 25092 - Need a way to inform script that resolution restrictions are applied

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25092



b) Bug 25200 - Add optional "licenseType" parameter to createSession()

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25200

Status:  See Joe's response:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25200#c1

and original thread:

[EME] Persistent license

http://lists.w3.org/Archives/Public/public-html-media/2014Mar/0020.html



c) Bug 25201 - Add ability to preemptively provide a server certificate

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25201

d) Bug 25217 - Add ability to specify license domain for key requests

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25217



e) Bug 25218 - Allow license management directly via MediaKeySession

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25218



7. Implemented EME bugs with review comments



a) 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

Implemented and awaiting review:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=18515#c21

See David's comments:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=18515#c23



8. EME bugs for discussion - Part 1



a) Bug 24951 - Use a simple string to identify the initData format instead of a MIME/content type

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24951

Status from Mar 18: Assigned to Adrian. Blocks: 17673 24673 24873.



b) Bug 24673 - Make all content type string checks case-sensitive

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24673

Status from Mar 4: Depends on bug 24591.



c) Bug 24873 - Current isTypeSupported() definition does not provide sufficient information to applications

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24873

Mar 18: David agreed to implement the proposed change.  Depends on 24951.



d) 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

Mar 4: Adrian agreed to implement this change.  Depends on Bug 24951. Blocks: 17682 24027



e) 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. Blocks bug 24419.  Depends on 17673.



f) 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

Status from Mar 18: David and John Simmons offered to review this bug. Depends on 17673.



g) Bug 24419 - Clear Key: Define license request format

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24419

Status from Mar 4: Depends on 17682 which has an action pending on David.



9. EME bugs for discussion - Part 2



a) Bug 24874 - Positive isTypeSupported() may be misleading (MSE vs. .src=)

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24874

Status from Mar 18: Jerry Smith offered to review this bug.



10. Implemented EME bugs awaiting review



a) Bug 24270 - Make MediaKeySession State Definitions and Event Summary sections non-normative

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24270



b) 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



c) 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



d) Bug 23619 - Change MediaKeyError to extend DOMError and use strings for error names

https://www.w3.org/Bugs/Public/show_bug.cgi?id=23619

Resolved as FIXED at Mar 4 meeting.



e) Bug 17202 - Explicitly document how keys are to be shared

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17202



11. EME bugs awaiting Editor implementation or action



a) 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)



b) 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)



c) Bug 24904 - Uint8Array parameters should not be modifiable after method calls return

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24904

See also the thread at:

http://lists.w3.org/Archives/Public/public-html-media/2014Mar/0002.html

Mar 18: David agreed to implement the proposed change.



12. EME bugs on hold or lower priority



a) 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



b) 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



c) 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 extensibility issue.

Mark added his use case on Feb 18:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=24025#c9



d) 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



e) 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



13. Any other business



14. Chair and Scribe for next meeting



15. 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, 1 April 2014 01:03:26 UTC

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