W3C

Media Fragments Working Group Teleconference

08 Jun 2011

Agenda

See also: IRC log

Attendees

Present
Raphael, Chris, Yves, Philip, Erik, Silvia, Davy
Regrets
Thomas
Chair
Erik, Raphael
Scribe
raphael

Contents


<trackbot> Date: 08 June 2011

<doublec> is there anyone on the call?

<doublec> Zakim: mute me

1. Admin

<doublec> I'm slowly getting used to it :)

PROPOSED to accept the minutes of the last week telecon: http://www.w3.org/2011/05/11-mediafrag-minutes.html

<erik> +1

+1

<doublec> +1

Minutes accepted

<silvia> +1

Raphael: TPAC 2011 in November

http://www.w3.org/2011/11/TPAC/#Tentative

2. Spec Update

ACTION-219?

<trackbot> ACTION-219 -- Davy Van Deursen to update the specification to reflect those changes -- due 2011-05-18 -- OPEN

<trackbot> http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/219

Raphael: I hope that by TPAC we do not have issues any more to deal with

Silvia: one of the change was to rename "id" into "chapter"
... I wonder if this was a good move
... in WebVTT, we add tracks (captions, audio descriptions) and cues (time stamps) have identifiers
... I wonder if #id would not be better than #chapter for a dimension that addresses a section by name
... tracks introduced in HTML5 with 5 possible types

<silvia> http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#texttrackcuelist <-

<silvia> http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#texttrackcue http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#dom-texttrackcuelist-getcuebyid(in DOMString id);

<doublec> but 'chapter' in media fragments is just a shortcut for #t=... isn't it? It's not related to the 'id' used in the cue?

Yes Chris

<silvia> example cue:

<silvia> 00:00:01.000 -> 00:00:08.000

<silvia> asdfasf

<silvia> then we get "example cue" as the identifier of this cue

<silvia> and we can address it by getCueById("example cue") in HTML5

Raphael: so the question is should we change back to "id" or another dimension name?

<silvia> and we can address it by http://example.com/video.ogv#example%2dcue

<doublec> If the user uses #id=example cue, does that mean it's the same as #t=1,8?

<silvia> yes

<doublec> so there needs to be a text track for id to work?

<davy> maybe we should name it 'cue': video.ogv#cue=example%20cue

<silvia> I like Davy's idea

Silvia: Cues are defined in a text track, yes

Raphael: but if the media has embedded cues?

Silvia: we are not introducing any dependencies, but we just make sure it can work with HTML5

Raphael: we discuss this on the mailing list, Silvia will start a thread to discuss whether we should name this dimension "id", "name" or "cue"

close ACTION-219

<trackbot> ACTION-219 Update the specification to reflect those changes closed

ACTION-2220?

<trackbot> ACTION-2220 does not exist

ACTION-220?

<trackbot> ACTION-220 -- Raphaël Troncy to change the specification accordingly to reflect that #track is local -- due 2011-05-18 -- OPEN

<trackbot> http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/220

close ACTION-220

<trackbot> ACTION-220 Change the specification accordingly to reflect that #track is local closed

Davy: many changes evrywhere ... perhaps someone should review it entirely and completely

?

Frank Denoual has spotted small issues: http://lists.w3.org/Archives/Public/public-media-fragment/2011Jun/0002.html

Raphael: t=10, sometimes valid, sometimes not

<scribe> ACTION: Davy to fix the #t=10, in Section 4.2.1 which is invalid [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action01]

<trackbot> Created ACTION-221 - Fix the #t=10, in Section 4.2.1 which is invalid [on Davy Van Deursen - due 2011-06-15].

Suggested sentence from Frank: "If a single number only is given, this corresponds to the begin time except if it is preceded by a comma that would in this case indicate the end time"

Davy: I will do this too

<davy> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#server-triggered-redirect

Davy: discussion between Silvia and me about the server triggered redirect for chapter (or id or cue)
... we need to decide and change the spec

<davy> http://lists.w3.org/Archives/Public/public-media-fragment/2011May/0083.html

Davy: we need to adapt the spec so that it says that the server can answer with byte ranges

<scribe> ACTION: Davy to adapt Section 5.2.3 so that the server can also send back the mapping in terms of byte ranges [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action02]

<trackbot> Created ACTION-222 - Adapt Section 5.2.3 so that the server can also send back the mapping in terms of byte ranges [on Davy Van Deursen - due 2011-06-15].

Raphael: do you see any other issues to deal with?

<doublec> not that I'm aware of

Erik: yes, answering questions from Boris, Chris and Fantasai

Raphael: loop problem from Chris is related to bug at http://www.w3.org/Bugs/Public/show_bug.cgi?id=12426
... clearly, we need to answer those requests
... svg issue is also related to TAG discussion and Yves need to be here
... I will answer to these comments
... Target is to transition to CR before end of June

3. Test Cases

Status for UA: http://www.w3.org/2008/WebVideo/Fragments/TC/ua-test-cases.html

Status for Server: http://www.w3.org/2008/WebVideo/Fragments/TC/server-test-cases

Raphael: we need to review more test cases in the upcoming telecon

Erik: we have 2 more telecon before the summer holidays

<scribe> ACTION: Raphael to start up a thread for discussion and approval of all test cases for the UA for the temporal dimension [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action03]

<trackbot> Sorry, couldn't find user - Raphael

<scribe> ACTION: troncy to start up a thread for discussion and approval of all test cases for the UA for the temporal dimension [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action04]

<trackbot> Created ACTION-223 - Start up a thread for discussion and approval of all test cases for the UA for the temporal dimension [on Raphaël Troncy - due 2011-06-15].

4. AOB

[silence]

<davy_> bye!

Raphael: get an agreement on the name of this last dimension by Sunday so we can vote for CR next week

<scribe> ACTION: Raphael to send a reply to the 4 commenters [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action05]

<trackbot> Sorry, couldn't find user - Raphael

<scribe> ACTION: troncy to send a reply to the 4 commenters [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action06]

<trackbot> Created ACTION-224 - Send a reply to the 4 commenters [on Raphaël Troncy - due 2011-06-15].

Summary of Action Items

[NEW] ACTION: Davy to adapt Section 5.2.3 so that the server can also send back the mapping in terms of byte ranges [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action02]
[NEW] ACTION: Davy to fix the #t=10, in Section 4.2.1 which is invalid [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action01]
[NEW] ACTION: Raphael to send a reply to the 4 commenters [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action05]
[NEW] ACTION: Raphael to start up a thread for discussion and approval of all test cases for the UA for the temporal dimension [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action03]
[NEW] ACTION: troncy to send a reply to the 4 commenters [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action06]
[NEW] ACTION: troncy to start up a thread for discussion and approval of all test cases for the UA for the temporal dimension [recorded in http://www.w3.org/2011/06/08-mediafrag-minutes.html#action04]
 
[End of minutes]

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$Date: 2011/06/08 09:57:26 $