RE: {minutes} HTML WG media telecon 2013-10-22 - MSE status and Last Call bug discussion

Minutes -> http://www.w3.org/2013/10/22-html-media-minutes.html

  [1]W3C

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

                               - DRAFT -

                  HTML Media Task Force Teleconference

22 Oct 2013

   [2]Agenda

      [2] http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0026.html

   See also: [3]IRC log

      [3] http://www.w3.org/2013/10/22-html-media-irc

Attendees

   Present
          +1.425.269.aaaa, Michael_Thornburgh, glenn,
          +1.760.591.aabb, Aaron_Colwell, markw, pladd, adrianba,
          paulc, johnsim, BobLund, pal

   Regrets
   Chair
          Paul Cotton

   Scribe
          Adrian Bateman

Contents

     * [4]Topics
         1. [5]Roll call
         2. [6]Unresolved Last Call bugs
         3. [7]Bug 23169 - reconsider the jitter video quality
            metrics again
         4. [8]Bug 23441 - Establish an MSE bytestream format
            registry
         5. [9]Bug 23549 - Clarify definition of decode timestamp
         6. [10]Bug 23552 - The phrase "this algorithm" in Section
            3.5.1 (Segment Parser Loop) is unclear
         7. [11]Bug 23553 - Segment parser loop appears to discard
            Media Segment header
         8. [12]Bug 23554 - Coded frame processing step 14 is very
            hard to parse
         9. [13]Bug 23557 - Advise support of all options for
            SPS/PPS in ISO BMFF
        10. [14]Bug 23558 - Requirement to ignore additional
            top-level boxes in ISO BMFF limits forward
            compatibility.
        11. [15]Comments on Media Source Extensions from HTML
            Accessibility Task Force
        12. [16]Exiting from Last Call
        13. [17]Any other business
     * [18]Summary of Action Items
     __________________________________________________________

   <trackbot> Date: 22 October 2013

   <paulc> Paul needs a Scribe!

   <scribe> ScribeNick: adrianba

   <scribe> Scribe: Adrian Bateman

Roll call

   paulc: done

Unresolved Last Call bugs

   <paulc>
   [19]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169

     [19] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169

   paulc: would like to leave this meeting with a plan for each
   bug

Bug 23169 - reconsider the jitter video quality metrics again

   paulc: aaron you had a response in comment 7

   <paulc> See
   [20]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169#c7

     [20] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169#c7

   acolwell: waiting for a response from jerry and mark
   ... i replied specifically to jerry's comments
   ... we haven't heard back from david since he filed the bug so
   we don't know if my proposal was acceptable to him

   paulc: looks like this needs input from jerry, mark, and
   dsinger

   <scribe> ACTION: paulc to ask jerry, mark, and dsinger to
   follow-up on bug 23169 [recorded in
   [21]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   01]

   <trackbot> Created ACTION-42 - Ask jerry, mark, and dsinger to
   follow-up on bug 23169 [on Paul Cotton - due 2013-10-29].

   <markw> apologies - I recall posting another response to this
   one, but I don't see it in the bug. I will have to recreate it.

   <paulc>
   [22]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23441

     [22] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23441

Bug 23441 - Establish an MSE bytestream format registry

   acolwell: not yet done this

   paulc: this needs to be assigned - can you pick this up
   ... do you have a target date?

   acolwell: want something by the next call - have a feeling
   there may be some iteration

   <scribe> ACTION: acolwell to put proposal on the table for bug
   23441 by the next meeting [recorded in
   [23]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   02]

   <trackbot> Created ACTION-43 - Put proposal on the table for
   bug 23441 by the next meeting [on Aaron Colwell - due
   2013-10-29].

   <paulc>
   [24]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23549

     [24] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23549

Bug 23549 - Clarify definition of decode timestamp

   paulc: comment from mark with proposed text and no response

   acolwell: i assigned it to me - didn't seem controversial -
   will be in next update

   <paulc>
   [25]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23552

     [25] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23552

Bug 23552 - The phrase "this algorithm" in Section 3.5.1 (Segment
Parser Loop) is unclear

   paulc: this one is aaron's list

Bug 23553 - Segment parser loop appears to discard Media Segment
header

   <paulc>
   [26]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23553#c1

     [26] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23553#c1

   paulc: aaron is proposing to figure out how to reword this

   acolwell: need to figure out a way to accomplish making it
   clear as well as supporting incremental parsing

   <paulc>
   [27]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23554

     [27] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23554

Bug 23554 - Coded frame processing step 14 is very hard to parse

   paulc: also assigned to aaron

   acolwell: didn't see anything controversial so planning to make
   the edits

   paulc: anyone have comments - it is on aaron's list

Bug 23557 - Advise support of all options for SPS/PPS in ISO BMFF

   <paulc>
   [28]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23557#c1

     [28] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23557#c1

   acolwell: this one i thought might be controversial so i need a
   response

   paulc: who are the experts on this?

   acolwell: someone from the BBC originally advocated for adding
   this text
   ... wasn't really thinking about letting avc4 in - don't think
   we should
   ... need mark to address question about dropping avc4
   ... also need feedback from bbc
   ... never my intent to add support for complex features

   paulc: johnsim, could you help track this down?

   <markw> I will check into this too

   <trackbot> Error finding 'johnsim'. You can review and register
   nicknames at <[29]http://www.w3.org/html/wg/media/track/users>.

     [29] http://www.w3.org/html/wg/media/track/users%3E.

   <scribe> ACTION: john to coordinate with markw and BBC on how
   to deal with bug 23557 [recorded in
   [30]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   03]

   <trackbot> Created ACTION-44 - Coordinate with markw and bbc on
   how to deal with bug 23557 [on John Simmons - due 2013-10-29].

   acolwell: will try to see who from bbc asked for this

   <paulc>
   [31]https://www.w3.org/Bugs/Public/show_bug.cgi?id=23558#c1

     [31] https://www.w3.org/Bugs/Public/show_bug.cgi?id=23558#c1

Bug 23558 - Requirement to ignore additional top-level boxes in ISO
BMFF limits forward compatibility.

   paulc: aaron is pushing back on mark's statement about adding a
   MAY

   markw: i'll respond to this one today

   <scribe> ACTION: markw to respond to bug 23558 [recorded in
   [32]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   04]

   <trackbot> Created ACTION-45 - Respond to bug 23558 [on Mark
   Watson - due 2013-10-29].

Comments on Media Source Extensions from HTML Accessibility Task
Force

   <acolwell>
   [33]http://lists.w3.org/Archives/Public/public-html-media/2013O
   ct/0022.html

     [33] http://lists.w3.org/Archives/Public/public-html-media/2013Oct/0022.html

   paulc: when they raised this on the a11y call i asked if they
   applied to MSE or to <video>
   ... i didn't get a good answer but they wanted to get them in
   on time

   acolwell: i think these apply to the media elements in HTML

   paulc: does someone want to raise bugs

   acolwell: i can do that

   <scribe> ACTION: acolwell to file bugs for a11y tf issues
   [recorded in
   [34]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   05]

   <trackbot> Created ACTION-46 - File bugs for a11y tf issues [on
   Aaron Colwell - due 2013-10-29].

Exiting from Last Call

   paulc: i had some comments about what happens next

   <paulc>
   [35]http://www.w3.org/2005/10/Process-20051014/tr.html#cfi

     [35] http://www.w3.org/2005/10/Process-20051014/tr.html#cfi

   paulc: i included notes on this in the agenda
   ... including a link to the process step
   ... and a check-list for what we need to do
   ... see "LC exit and CR entrance check list"

   <paulc> - LC report - see [36]http://tinyurl.com/mkwygp4

     [36] http://tinyurl.com/mkwygp4

   paulc: there are no formal objections, will need to talk about
   start and end of CR stage
   ... identifying any features at risk - good if you can inform
   the Director about existing implementations
   ... need a CfC at task force and WG level
   ... if we can get a more than average amount of work in the
   next 2 weeks we can have the discussion about these at TPAC
   ... hope to go into CR in December
   ... aaron, does this answer your questions?

   acolwell: yes - i assume there is no period for another flurry
   of bugs

   paulc: correct

   johnsim: btw, it is Chris Poole at the BBC

Any other business

   paulc: nothing heard

Summary of Action Items

   [NEW] ACTION: acolwell to file bugs for a11y tf issues
   [recorded in
   [37]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   05]
   [NEW] ACTION: acolwell to put proposal on the table for bug
   23441 by the next meeting [recorded in
   [38]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   02]
   [NEW] ACTION: john to coordinate with markw and BBC on how to
   deal with bug 23557 [recorded in
   [39]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   03]
   [NEW] ACTION: markw to respond to bug 23558 [recorded in
   [40]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   04]
   [NEW] ACTION: paulc to ask jerry, mark, and dsinger to
   follow-up on bug 23169 [recorded in
   [41]http://www.w3.org/2013/10/22-html-media-minutes.html#action
   01]

   [End of minutes]

____________________
From: Paul Cotton [mailto:Paul.Cotton@microsoft.com] 
Sent: Monday, October 21, 2013 4:14 AM
To: public-html-media@w3.org
Subject: {agenda} HTML WG media telecon 2013-10-22 - MSE status and Last Call bug discussion

The HTML WG media teleconference meeting will occur on 2013-10-22 for up to 60 minutes from 15:00Z to 16:00Z.
 
http://timeanddate.com/s/2gwf
 
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/2013/10/08-html-media-minutes.html  
 
3. Review of action items and issues
https://www.w3.org/html/wg/media/track/
MSE-related actions are given below.
 
4. MSE status and bugs
 
a) Last Call MSE closed on Oct 17
http://www.w3.org/TR/2013/WD-media-source-20130905/ 

b) Media Source Extensions editor's draft: 
http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html 
Status as of Oct 21:  Last updated on Oct 15.

c) Media Source Extensions bugs: 
http://tinyurl.com/6pdnzej 
Status as of Sep 21: 8 bugs.  See below.

d) All Last Call bugs
http://tinyurl.com/mkwygp4 

5. Unresolved Last Call bugs

a) Bug 23169 - reconsider the jitter video quality metrics again
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169 
See Aaron's response:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23169#c7  

b) Bug 23441 - Establish an MSE bytestream format registry
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23441 

c) Bug 23549 - Clarify definition of decode timestamp 
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23549 

d) Bug 23552 - The phrase "this algorithm" in Section 3.5.1 (Segment Parser Loop) is unclear
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23552 
Response:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23552#c1 

e) Bug 23553 - Segment parser loop appears to discard Media Segment header
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23553  
Response:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23553#c1

f) Bug 23554 - Coded frame processing step 14 is very hard to parse
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23554   

g) Bug 23557 - Advise support of all options for SPS/PPS in ISO BMFF
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23557 
Response:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23557#c1

h)  Bug 23558 - Requirement to ignore additional top-level boxes in ISO BMFF limits forward compatibility.
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23558
Response:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23558#c1 

6. Exiting from Last Call

a) W3C Process description of Call for Implementations
http://www.w3.org/2005/10/Process-20051014/tr.html#cfi

b) LC exit and CR entrance check list
- General requirements for advancement - See http://www.w3.org/2005/10/Process-20051014/tr.html#transition-reqs
- LC report - see http://tinyurl.com/mkwygp4 
- Formal objections - None at this time
- Start and minimum length of CR
- Features at risk
- Present and expected implementations and status of any test suite
- CfC for CR entrance at Task Force and WG level

7. Any other business
 
8. Chair and Scribe for next meeting
Next meeting will be in two weeks on Oct 8.
 
9. 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

Received on Tuesday, 22 October 2013 15:43:24 UTC