- From: Adrian Bateman <adrianba@microsoft.com>
- Date: Tue, 25 Jun 2013 15:57:40 +0000
- To: Paul Cotton <Paul.Cotton@microsoft.com>, "public-html-media@w3.org" <public-html-media@w3.org>
Minutes -> http://www.w3.org/2013/06/25-html-media-minutes.html
[1]W3C
[1] http://www.w3.org/
- DRAFT -
HTML Media Task Force Teleconference
25 Jun 2013
[2]Agenda
[2] http://lists.w3.org/Archives/Public/public-html-media/2013Jun/0027.html
See also: [3]IRC log
[3] http://www.w3.org/2013/06/25-html-media-irc
Attendees
Present
glenn, +44.303.040.aaaa, [Microsoft], davide,
+1.760.533.aabb, +1.831.457.aacc, Michael_Thornburgh,
paulc, pladd, adrianba
Regrets
Chair
Paul Cotton
Scribe
Adrian Bateman
Contents
* [4]Topics
1. [5]Roll call, introductions and selection of scribe
2. [6]Previous meeting minutes
3. [7]Review of action items and issues
4. [8]MSE status and bugs
5. [9]Any other business
6. [10]Adjournment
* [11]Summary of Action Items
__________________________________________________________
<trackbot> Date: 25 June 2013
<paulc> Agenda:
[12]http://lists.w3.org/Archives/Public/public-html-media/2013J
un/0027.html
[12] http://lists.w3.org/Archives/Public/public-html-media/2013Jun/0027.html
<scribe> ScribeNick: adrianba
<scribe> Scribe: Adrian Bateman
Roll call, introductions and selection of scribe
paulc: done
Previous meeting minutes
<paulc>
[13]http://www.w3.org/2013/06/11-html-media-minutes.html
[13] http://www.w3.org/2013/06/11-html-media-minutes.html
paulc: used these minutes to generate the agenda
Review of action items and issues
paulc: none for MSE
MSE status and bugs
<paulc> Latest Editor's draft:
[14]http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/
media-source.html
[14] http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html
paulc: spec hadn't been updated yesterday
<paulc> Current bug list: [15]http://tinyurl.com/6pdnzej
[15] http://tinyurl.com/6pdnzej
adrianba: aaron had added PRE_LAST_CALL to the whiteboard field
<acolwell> PRE_LAST_CALL
adrianba: for all the bugs that are pre-last call
... so the new bugs (about half) are last call comments
paulc: there are 7 pre last call bugs < 22148
<paulc> See [16]http://tinyurl.com/q3do7nx
[16] http://tinyurl.com/q3do7nx
paulc: are you suggesting prioritising these?
adrianba: yes
<paulc>
[17]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22148#c3
[17] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22148#c3
Bug 22148 - Request that we reconsider adding jitter to video
quality metrics
acolwell: i need to look at it some more but fine adding it for
now
... not clear how this improves things but fine making the
change
... i'll update the text
paulc: for comment 3
Bug 22137 - changes in number of audio tracks during advert
insertion
<paulc> Bug 22137 - changes in number of audio tracks during
advert insertion
[18]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137
[18] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137
adrianba: jerry might have some questions on this
jdsmith: not clear the proposal makes switching deterministic
and simple
acolwell: the idea is that if there is a default track indicate
in the init segment
... then you just pick the first default track for each type
... first default video or first default audio
... if there is no default indicated then you pick the first
... which tends to be the lowest track id but not always
jdsmith: will this be a good consistent experience
acolwell: i don't know - was a proposal to address the concern
without adding too much complexity
... not clear what multi-track content is like
<paulc> Proposal is in
[19]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137#c3
[19] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137#c3
jdsmith: need to do more research on content to see how this
works
... sounds like it would be deterministic but want to make sure
it is sensible
BobLund: consistent with MPEG2TS defines the lowest number
first in the metadata (since there is no way to signal default)
<scribe> ACTION: jdsmith to review bug 22137 and provide
feedback [recorded in
[20]http://www.w3.org/2013/06/25-html-media-minutes.html#action
01]
<trackbot> Error finding 'jdsmith'. You can review and register
nicknames at <[21]http://www.w3.org/html/wg/media/track/users>.
[21] http://www.w3.org/html/wg/media/track/users%3E.
<scribe> ACTION: adrianba to work with Jerry to review bug
22137 and provide feedback [recorded in
[22]http://www.w3.org/2013/06/25-html-media-minutes.html#action
02]
<trackbot> Created ACTION-21 - Work with Jerry to review bug
22137 and provide feedback [on Adrian Bateman - due
2013-07-02].
Bug 22136 - Inband Storage for SPS/PPS in ISO BMFF
[23]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22136
[23] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22136
ACTION adrianba to work with jerry to confirm the proposal in
22136 is acceptable
<trackbot> Created ACTION-22 - Work with jerry to confirm the
proposal in 22136 is acceptable [on Adrian Bateman - due
2013-07-02].
Bug 22135 - Changing Source Buffers
[24]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22135
[24] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22135
paulc: now resolved
Bug 22134 - When do multiple SourceBuffers have to be used
[25]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22134
[25] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22134
acolwell: think need to go through an be more explicit - need
to go back and make more clear
ACTION acolwell to update spec for bug 22134 by the next call
<trackbot> Created ACTION-23 - Update spec for bug 22134 by the
next call [on Aaron Colwell - due 2013-07-02].
Bug 22117 - Add a conformance section
[26]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22117
[26] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22117
paulc: Cyril says that he needs a little more time
acolwell: and i assigned the bug to him
<scribe> ACTION: Cyril to propose text for 22117 [recorded in
[27]http://www.w3.org/2013/06/25-html-media-minutes.html#action
03]
<trackbot> Error finding 'Cyril'. You can review and register
nicknames at <[28]http://www.w3.org/html/wg/media/track/users>.
[28] http://www.w3.org/html/wg/media/track/users%3E.
Bug 22112 - Merge appendBuffer and appendStream text
[29]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22112
[29] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22112
adrianba: haven't got to this yet - bug is assigned to me
Bug 22110 - Javascript decoding data
[30]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22110
[30] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22110
adrianba: fixed this morning
Bug 22109 - Use of the word sequence
[31]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22109
[31] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22109
acolwell: just need to sit down and think about again - didn't
get to it
Bug 21431 - Specify splicing behavior for text tracks
[32]https://www.w3.org/Bugs/Public/show_bug.cgi?id=21431
[32] https://www.w3.org/Bugs/Public/show_bug.cgi?id=21431
paulc: glenn responded and bug is marked resolved, fixed
... we have 7 outstanding bugs and we know who is responsible
for each of them: jerry, adrian, aaron, and cyril
... once we have those fixed we will do CfC in TF to go to LC
... suggest we use the rest of the time for the post pre-LC
bugs
Bug 22432 - Allow SourceBuffer.appendBuffer to take ownership
of the ArrayBuffer
[33]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22432
[33] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22432
acolwell: think this is from somebody at mozilla
... think i agree with this - so we don't have to do the copy
<paulc> Suggestion: add wording similar to that added to Web
Audio's decodeAudioBuffer method:
[34]https://dvcs.w3.org/hg/audio/rev/ef43ae5230bf
[34] https://dvcs.w3.org/hg/audio/rev/ef43ae5230bf
acolwell: are there other apis that do this?
adrianba: in two minds about this: on the one hand this seems
like a solution to a problem that often happens with
arraybuffers
... but on the other it's probably not something we're going to
do soon
... up to now we've assumed that changing the buffer while an
operation is happening is undefined
... and we might leave it that way so the spec reflects reality
acolwell: okay, not sure if they will object to a resolution
that the spec doesn't imply copying
paulc: adrianba, should you respond to the bug?
Bug 22431 - HTMLVideoElement.videoPlaybackQuality should be a
live object rather than returning a new object
[35]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22431
[35] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22431
acolwell: this is the discussion we had before about attribute
vs. method
... i responded in the bug
... i don't feel strongly
paulc: maybe that will provoke a response in the bug
Bug 22430 - Handling multiple media element attachments
[36]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22430
[36] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22430
acolwell: believe we cover this case and it will probably be
WONTFIX or WORKSFORME
Bug 22401 - [MSE]
[37]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22401
[37] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22401
acolwell: assigned to myself - editorial one word change
Bug 22371 - [MSE] Ogg byte streams
[38]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22371
[38] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22371
acolwell: will start by saying a little biased against ogg but
will try to be fair
... not sure if want to add another format to the spec
... but each format has a constituency
... wonder if now is a good time to specify a mechanism for
other formats
... so that we don't keep getting more and more added
... what do we want to do to stop bugs for everyone's favourite
format
paulc: there is a proposal in the bug too
acolwell: yes, i have comments on the text too
pal: is there any reason why additional formats couldn't be
done in separate documents as long as MSE specifies what needs
to be included
acolwell: that's the point i think we're getting to
... we included formats originally to show how to support MSE
... but this won't scale
... otherwise new formats will constantly block MSE getting
done
paulc: acolwell, you were talking about responding - was that
about specific things
acolwell: there are some specific things about the proposal
... but the other task is maybe to define what a bytestream
format spec looks like
... so we can provide a different place to put this than in the
main spec
paulc: could be an annexe in the MSE doc that says if you want
to define a new format here is what you must and should do
acolwell: think we have the start of that in the first part of
this section
... we just don't say how you specify this
Bug 22329 - [MSE] TextTrack attributes settable in conflict
with the html spec
[39]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22329
[39] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22329
<paulc> Aaron's response is in
[40]https://www.w3.org/Bugs/Public/show_bug.cgi?id=22329#c1
[40] https://www.w3.org/Bugs/Public/show_bug.cgi?id=22329#c1
acolwell: i responded a while ago saying this is intentional
because we're extending for supporting DASH
paulc: suggest resolving WONTFIX - person can reopen if they
don't like the disposition
... we've gone through all the bugs
Any other business
paulc: any other business?
... lots of actions assigned
Adjournment
paulc: adjourned
Summary of Action Items
[NEW] ACTION: adrianba to work with Jerry to review bug 22137
and provide feedback [recorded in
[41]http://www.w3.org/2013/06/25-html-media-minutes.html#action
02]
[NEW] ACTION: Cyril to propose text for 22117 [recorded in
[42]http://www.w3.org/2013/06/25-html-media-minutes.html#action
03]
[NEW] ACTION: jdsmith to review bug 22137 and provide feedback
[recorded in
[43]http://www.w3.org/2013/06/25-html-media-minutes.html#action
01]
[End of minutes]
_____________________
From: Paul Cotton [mailto:Paul.Cotton@microsoft.com]
Sent: Monday, June 24, 2013 9:43 PM
To: public-html-media@w3.org
Subject: {agenda} HTML WG media telecon 2013-06-25 - MSE status and bug discussion
The HTML WG media teleconference meeting will occur on 2013-06-25 for up to 60 minutes from 15:00Z to 16:00Z.
http://timeanddate.com/s/2dsn
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
http://www.w3.org/2013/06/11-html-media-minutes.html
3. Review of action items and issues
https://www.w3.org/html/wg/media/track/
No MSE-related actions.
4. MSE status and bugs
a) Media Source Extensions editor's draft:
http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html
Status as of Jun 24: Last updated on June 5.
b) Media Source Extensions bugs:
http://tinyurl.com/6pdnzej
Status as of Jun 24: 16 bugs. See list at end of this agenda.
c) Bug 22432 - Allow SourceBuffer.appendBuffer to take ownership of the ArrayBuffer
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22432
Status: New bug since last meeting.
d) Bug 22431 - HTMLVideoElement.videoPlaybackQuality should be a live object rather than returning a new object
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22431
Status: New bug since last meeting.
e) Bug 22430 - Handling multiple media element attachments
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22430
Status: New bug since last meeting.
f) Bug 22401 - [MSE]
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22401
Status: New bug since last meeting.
g) Bug 22371 - [MSE] Ogg byte streams
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22371
Status: New bug since last meeting.
h) Bug 22329 - [MSE] TextTrack attributes settable in conflict with the html spec
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22329
Status: New bug since last meeting.
i) Bug 22148 - Request that we reconsider adding jitter to video quality metrics
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22148#c3
Status: On Jun 11 we agreed to give TF members more time to consider this bug.
j) Bug 22137 - changes in number of audio tracks during advert insertion
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22137
Status: On Jun 11 Adrian asked for more time to review the proposed solution.
k) Bug 22136 - Inband Storage for SPS/PPS in ISO BMFF
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22136
Status: On Jun 11 we decided to hold off on the proposed solution so that Aaron could respond.
l) Bug 22135 - Changing Source Buffers
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22135
Status: On Jun 11 no one objected to Adrian’s proposal to mark this bug as RESOLVED WONTFIX but the status has not been updated.
m) Bug 22134 - When do multiple SourceBuffers have to be used
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22135
Status: On Jun 11 Aaron asked for more time to review this bug.
n) Bug 22117 - Add a conformance section
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22135
Status: On Jun 11 Cyril agreed to provide a proposed change for this bug.
o) Bug 22112 - Merge appendBuffer and appendStream text
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22112
Status: On Jun 11 this editorial item was assigned to Adrian.
p) Bug 22110 - Javascript decoding data
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22110
Status: On Jun 11 this editorial item was assigned to Adrian.
q) Bug 22109 - Use of the word sequence
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22109
Status: On Jun 11 Aaron agreed to review this bug.
r) Bug 21431 - Specify splicing behavior for text tracks
https://www.w3.org/Bugs/Public/show_bug.cgi?id=21431
Status: On Jun 11 we decided to wait for Glenn to add more suggested changes.
5. Any other business
6. Chair and Scribe for next meeting
7. 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
16 bugs found.
ID▼
Status
Summary
Changed
22432
NEW
Allow SourceBuffer.appendBuffer to take ownership of the ArrayBuffer
Mon 02:27
22431
NEW
HTMLVideoElement.videoPlaybackQuality should be a live object rather than returning a new object
Mon 02:15
22430
NEW
Handling multiple media element attachments
Mon 02:02
22401
NEW
[MSE]
Wed 05:26
22371
NEW
[MSE] Ogg byte streams
2013-06-18
22329
NEW
[MSE] TextTrack attributes settable in conflict with the html spec
2013-06-12
22148
REOP
Request that we reconsider adding jitter to video quality metrics
2013-06-09
22137
NEW
changes in number of audio tracks during advert insertion
2013-06-17
22136
ASSI
Inband Storage for SPS/PPS in ISO BMFF
2013-06-11
22135
NEW
Changing Source Buffers
2013-06-17
22134
REOP
When do multiple SourceBuffers have to be used
2013-06-17
22117
NEW
Add a conformance section
2013-06-05
22112
ASSI
Merge appendBuffer and appendStream text
2013-06-11
22110
NEW
Javascript decoding data
2013-05-23
22109
NEW
Use of the word sequence
2013-05-23
21431
ASSI
Specify splicing behavior for text tracks
2013-06-01
16 bugs found.
Paul Cotton, Microsoft Canada
17 Eleanor Drive, Ottawa, Ontario K2E 6A3
Tel: (425) 705-9596 Fax: (425) 936-7329
Received on Tuesday, 25 June 2013 16:00:43 UTC