HTML Media Task Force Teleconference -- 29 Oct 2013

<trackbot> Date: 29 October 2013

<paulc> Good morning, Ade.

<paulc> trackbot, start meeting

<trackbot> Meeting: HTML Media Task Force Teleconference

<trackbot> Date: 29 October 2013

<trackbot> Sorry, adrianba, I don't understand 'trackbot all set up'. Please refer to <http://www.w3.org/2005/06/tracker/irc> for help.

<paulc> ok

<paulc> thanks

<paulc> Agenda: http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0030.html

<scribe> ScribeNick: adrianba

<scribe> Scribe: Adrian Bateman

Roll call, introductions and selection of scribe

paulc: done

EME status and bugs

paulc: last editor's draft updated yesterday

<paulc> http://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html

paulc: current bug count is 17 now
... so at least one item has been closed
... two more bugs than last meeting

<paulc> http://tinyurl.com/7tfambo

Items from last meeting

Bug 19809 - Specify which portion of addKey() algorithm to run when updating license for a key

https://www.w3.org/Bugs/Public/show_bug.cgi?id=19809

paulc: david was to evaluate the proposal
... last comment is from david this morning

<paulc> https://www.w3.org/Bugs/Public/show_bug.cgi?id=19809#c5

paulc: it looks like the action has been done but not in a state to close the bug

ddorwin: question is should we always try to resume playback if we get an update call and playback is stopped
... this is simplest and could be correct
... hard to specify "did store key"
... proposal is to remove key storage algorithm, provide non-normative guidance, remove did store key flag

paulc: comments?
... no comments - think we should resolve this bug and if people see text they don't like they can re-open

ddorwin: okay, will continue editing today

Bug 17202 - Explicitly document how keys are to be shared

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

ACTION-40?

<trackbot> ACTION-40 -- Joe Steele to Propose text for bug 17202 to propose how to share keys without leakage of information -- due 2013-10-29 -- OPEN

<trackbot> http://www.w3.org/html/wg/media/track/actions/40

<paulc> Proposal in http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0031.html

paulc: joe isn't here today
... not sure what to do about this
... there have been 5 comments on this

<markw> yes

paulc: how do we want to handle this given joe's absence

<markw> +1 to needing more discussion

ddorwin: need more email discussion

Bug 17682 - Clear Key: Document how keys and key IDs are associated

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17862

<ddorwin> https://www.w3.org/bugzilla_public/show_bug.cgi?id=17682

ddorwin: didn't do this yet

paulc: no outstanding questions - can just be resolved

Bug 21855 - Avoid network traffic and duplicate sessions for the same key(s)

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21855#c9

paulc: is this related to ACTION-40?

ddorwin: not sure what the relationship is

paulc: this can be resolved as a result of the discussion last time?

ddorwin: i think adrian owns this

<scribe> ACTION: adrianba to complete work on bug 21855 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action01]

<trackbot> Created ACTION-47 - Complete work on bug 21855 [on Adrian Bateman - due 2013-11-05].

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

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17750#c8

ACTION-41?

<trackbot> ACTION-41 -- Adrian Bateman to Implement proposal in bug 17750 comment #8 -- due 2013-10-29 -- OPEN

<trackbot> http://www.w3.org/html/wg/media/track/actions/41

adrianba: didn't get to this yet

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

paulc: john and david were going to discuss this

johnsim: i got an email from david describing his concerns - we don't have new text yet - i agree with his concerns and they make sense so we need to come up with new language

paulc: the next time this group meets is the F2F
... for items still open, not things just waiting editing, i want actions to follow-up before the meeting

<scribe> ACTION: john to draft a proposal for bug 17673 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action02]

<trackbot> Created ACTION-48 - Draft a proposal for bug 17673 [on John Simmons - due 2013-11-05].

ACTION-48 due in two weeks

<trackbot> Set ACTION-48 Draft a proposal for bug 17673 due date to 2013-11-05.

Bug 20991 - MediaKeys constructor: make CDM loading asynchronous and fix the load failure algorithm

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20991

paulc: adrian said he had made the changes and people were going to look at this
... resolved fixed

<ddorwin> I reviewed it. It's fine with me.

paulc: don't think we need to do anything here

Bug 23618 - Drop "key" prefix from event namesEvent name proposal

https://www.w3.org/Bugs/Public/show_bug.cgi?id=23618

paulc: this bug and the next one was to reflect changes proposed in email

<paulc> David's email: http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0015.html

ddorwin: bugs are just what was in the mail
... proposing to remove the key prefix from events
... not always related to keys so may be confusing

jdsmith: this doesn't match our implementation - don't see a strong argument for changing at this stage

ddorwin: Microsoft's implementation is prefixed so that will have to change anyway

jdsmith: is this aligned with something else?

ddorwin: we're firing at a mediakeysession so key seems redundant
... media elements have error event
... more than shorter names, as we've got to the state machine there are many other things that can cause you to be ready

jdsmith: seems unnecessarty

paulc: if the APIs are prefixed then you still have to change?

ddorwin: applications will have to update to drop prefixes
... and make other changes

jdsmith: i imagine we can pick this up when we unprefix the API

paulc: sounds like you can live with this but won't make the change soon

jdsmith: it will be a while

paulc: any objection to the changes david is proposing?
... don't hear any
... think we should mark this as implementable

<scribe> ACTION: ddorwin to implement bug 23618 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action03]

<trackbot> Created ACTION-49 - Implement bug 23618 [on David Dorwin - due 2013-11-05].

Bug 23619 - Drop or change MediaKeyError constant prefix

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

ddorwin: similar to the previous one - we prefixed the constants to fire errors
... this isn't consistent with other things
... not sure what to suggest - it was suggested that we use enum strings

paulc: can we use this in WebIDL

adrianba: enum strings are defined and commonly used - not sure about with errors

<scribe> ACTION: adrianba to work on proposal for bug 23619 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action04]

<trackbot> Created ACTION-50 - Work on proposal for bug 23619 [on Adrian Bateman - due 2013-11-05].

paulc: we're half way through the list - i'd like to look at the other bugs

Open Bugs

<paulc> David's review: http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0001.html

paulc: not sure where we were in following this review
... at the bottom there are a bunch of bugs that need proposals

<paulc> *** Need proposals - any volunteers? ***

paulc: 18515, 22909, 22910

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

Bug 18515 - Provide more details on behavior of the media element when the key for an encrypted block is not available

paulc: last comment from jerry on aug 19
... giving people a chance to look at this
... jerry, are you willing to take an action to write a proposal on this?
... may mean starting an email thread - want someone on point

jdsmith: primary people were david, mark, and joe?
... okay, i'll do that

<scribe> ACTION: adrianba to remind jdsmith to write a proposal for bug 18515 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action05]

<trackbot> Error finding 'jdsmith'. You can review and register nicknames at <http://www.w3.org/html/wg/media/track/users>.

<scribe> ACTION: adrianba to remind jdsmith to write a proposal for bug 1851 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action06]

<trackbot> Created ACTION-51 - Remind jdsmith to write a proposal for bug 1851 [on Adrian Bateman - due 2013-11-05].

https://www.w3.org/Bugs/Public/show_bug.cgi?id=22909

Bug 22909 - Needs non-normative Security Considerations section

markw: i have drafted a privacy section, which i'm reviewing with a few people, and i'm planning to do a security one too

paulc: 22910 is the privacy one, right?

markw: yes, i've made more progress on that one but was planning to do security next

<scribe> ACTION: markw to draft a proposal for bug 22909 and bug 22910 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action07]

<trackbot> Created ACTION-52 - Draft a proposal for bug 22909 and bug 22910 [on Mark Watson - due 2013-11-05].

https://www.w3.org/Bugs/Public/show_bug.cgi?id=22910

Bug 22910 - Needs non-normative Privacy Consideration section

paulc: last category is discussed but no consensus
... 17199, 17660, 20944, and 21869
... items discussed previously

Bug 17199 - Provide examples for and get feedback on Key Release

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17199

paulc: mark made the last comment on july 16

markw: have a feeling it will retain its current status for a while longer
... subject of implementation discussions
... not sure if anything needs to change in the spec

paulc: can i give you an action for this?

markw: yes

adrianba: i proposed that resolving bug 17550 would include the things mark was requesting and maybe we could then resolve bug 17199

ddorwin: was going to say something similar - should make the changes to 17550 and then see if there are any gaps - made this bug dependent on 17550

<scribe> ACTION: markw to propose how to resolve bug 17199 in light of resolution of bug 17550 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action08]

<trackbot> Created ACTION-53 - Propose how to resolve bug 17199 in light of resolution of bug 17550 [on Mark Watson - due 2013-11-05].

Bug 17660 - need token relative with user identity for a new generateKeyRequest parameter

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17660

<paulc> New proposal from Joe: http://lists.w3.org/Archives/Public/public-html-media/2012Oct/0076.html

paulc: last proposed by joe a long time ago

<scribe> ACTION: adrianba to revive bug 17660 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action09]

<trackbot> Created ACTION-54 - Revive bug 17660 [on Adrian Bateman - due 2013-11-05].

Bug 20944 - EME should do more to encourage/ensure CDM-level interop

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20944

paulc: this is one of the external comments we've received - long item
... mark added something about registry
... i think the best plan is for us to pick this up for the F2F
... don't know if anyone wants to deal with this now or just at the F2F
... any volunteers?

Bug 21869 - Need clarity on stored keys for CDMs

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21869

paulc: what do we do with this one?
... we can discuss at the F2F

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

Bug 21798 - Revisit MediaKeyError codes

paulc: assigned to david - blocks 23619
... is this covered by action-50?

ddorwin: this is the actual codes we want? i will propose a list - should get discussion before the F2F
... the other action is how to name, this is what to name
... i'll come up with a list of what errors i think we want

<scribe> ACTION: ddorwin to come up with list of errors for bug 21798 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action10]

<trackbot> Created ACTION-55 - Come up with list of errors for bug 21798 [on David Dorwin - due 2013-11-05].

Bug 21854 - Define MediaKeySession life cycle states and/or events

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21854

ddorwin: this was closed and i reviewed the text and i disagreed with a few parts so i reopened the bug to address these minor issues

<scribe> ACTION: adrianba to respond to david's comments in bug 21854 [recorded in http://www.w3.org/2013/10/29-html-media-minutes.html#action11]

<trackbot> Created ACTION-56 - Respond to david's comments in bug 21854 [on Adrian Bateman - due 2013-11-05].

paulc: i believe we now have 10 outstanding actions - encourage follow through on those actions in the next couple of weeks
... either in bug or by starting email threads
... so we make progress before F2F

Any other business

<paulc> EME will be discussed at the WG F2F meeting on Nov 14-15. Next EME Task Force meeting will be on Tue Dec 3.

paulc: reminder that EME will be discussed on day 1 of F2F
... we will cancel WG meetings the week after TPAC and the following week is US Thanksgiving
... propose we start again on Dec 3 and EME goes first
... want to close as many items as possible at F2F
... to give editors a couple of weeks to implement decisions
... may not be many work days given vacation and holidays

Adjournment

paulc: get started on the action items - adjourned

- DRAFT -

HTML Media Task Force Teleconference

29 Oct 2013

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