09:00:34 RRSAgent has joined #mediafrag 09:00:34 logging to http://www.w3.org/2010/06/23-mediafrag-irc 09:00:36 RRSAgent, make logs public 09:00:36 Zakim has joined #mediafrag 09:00:38 Zakim, this will be IA_MFWG 09:00:38 ok, trackbot; I see IA_MFWG()5:00AM scheduled to start now 09:00:39 Meeting: Media Fragments Working Group Teleconference 09:00:39 Date: 23 June 2010 09:01:09 IA_MFWG()5:00AM has now started 09:01:17 + +33.4.93.00.aaaa 09:01:23 Agenda: http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0052.html 09:01:29 Regrets: Conrad 09:01:33 Chair: Raphael/Erik 09:01:49 jackjansen has joined #mediafrag 09:01:55 Present: Raphael, Silvia, Michael, Yves, Jack 09:01:58 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html raphael 09:02:01 davy has joined #mediafrag 09:02:07 +Yves 09:02:15 Present+ Davy 09:02:24 zakim, code? 09:02:24 the conference code is 3724 (tel:+1.617.761.6200 tel:+33.4.89.06.34.99 tel:+44.117.370.6152), jackjansen 09:02:32 + +0329331aabb 09:02:43 Present+ Erik 09:03:00 + +31.20.592.aacc 09:03:09 zakim, aacc is Jack 09:03:09 sorry, raphael, I do not recognize a party named 'aacc' 09:03:10 zakim, aacc is me 09:03:10 sorry, jackjansen, I do not recognize a party named 'aacc' 09:03:27 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html raphael 09:03:30 Zakim, aacc is jackjansen 09:03:30 sorry, mhausenblas, I do not recognize a party named 'aacc' 09:03:42 + +3539149aadd 09:04:14 Agenda: http://lists.w3.org/Archives/Public/public-media-fragment/2010Jun/0052.html 09:04:28 scribe: raphael 09:04:32 scribenick: raphael 09:04:40 erik has joined #mediafrag 09:04:42 Topic: 1. Admin 09:04:55 PROPOSED to accept the minutes of the 6th F2F meeting 09:05:00 http://www.w3.org/2010/06/15-mediafrag-minutes.html 09:05:09 `+1 09:05:10 http://www.w3.org/2010/06/16-mediafrag-minutes.html 09:05:21 +1 09:05:24 +1 09:05:26 Minutes are accepted 09:05:31 +1 09:05:49 Topic: 2. Follow up of the ACTIONS 09:05:56 ACTION-174? 09:05:56 ACTION-174 -- Yves Lafon to produce the common syntax block -- due 2010-06-22 -- OPEN 09:05:56 http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/174 09:06:24 close ACTION-174 09:06:25 ACTION-174 Produce the common syntax block closed 09:07:02 From Silvia: 09:07:12 .. Section 4.1 has the following bit of ABNF: 09:07:18 namevalues = namevalue *( "&" namevalue ) 09:07:18 namevalue = name [ "=" value ] 09:07:18 name = fragment - "&" - "=" 09:07:18 value = fragment - "&" 09:08:19 Yves: actually, we should remove his block 09:08:28 s/his/this 09:10:02 + +61.2.801.2.aaee 09:10:08 Yves: this section is both invalid and un-needed 09:10:40 zakim, mute me 09:10:40 silvia was already muted, silvia 09:10:43 ... so the whole group agrees that this section should be removed 09:11:06 Topic: 3. Review of the whole document 09:11:11 ACTION-178? 09:11:11 ACTION-178 -- Silvia Pfeiffer to review the complete document, remove unnecessary editorial notes before publication -- due 2010-06-23 -- OPEN 09:11:11 http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/178 09:11:19 close ACTION-178 09:11:19 ACTION-178 Review the complete document, remove unnecessary editorial notes before publication closed 09:11:53 Raphael: what do we say about RTSP processing? 09:12:15 Yves: for LC we should not detail the processing of this 09:12:21 ... good to mention that the syntax is generic 09:12:26 ... and not only for HTTP 09:12:34 +q 09:12:47 zakim, unmute me 09:12:47 silvia should no longer be muted 09:13:23 Silvia: the messages that go over the protocol is protocol dependant 09:13:30 Note that we have a description on our wiki about RTSP: http://www.w3.org/2008/WebVideo/Fragments/wiki/UA_Server_RTSP_Communication 09:13:46 ... what we can do is to say how media fragments URI syntax can be mapped to RTSP messages 09:13:58 ... but don't say how, since we don't have time 09:14:16 adding "This specification is not defining the protocol aspect of RTSP handling of media-fragment." 09:14:45 zakim, mute me 09:14:45 silvia should now be muted 09:15:24 Davy: we could just re-use this wiki page and adapt it to the latest syntax 09:15:37 Yves: problem is that we will need to test this through implementation 09:15:39 +q 09:15:50 ... while a WG note would not need to be tested 09:15:52 zakim, unmute me 09:15:52 silvia should no longer be muted 09:16:00 Davy: but we have an implementation of this! 09:16:29 Silvia: I know people who also wants to have an implementation ... so it must not be difficult 09:16:31 zakim, mute me 09:16:31 silvia was already muted, silvia 09:17:37 Yves: I think RTSP is useful ... but I suggest to have it in another document 09:17:46 ... but I want to speed up the process 09:17:52 ... so I prefer to have another document 09:17:55 if we think it is hard to include RTSP after LC, I think it would make more sense to include it now 09:18:24 Jack: I think it is a good idea to put it into another document 09:18:34 zakim, unmute me 09:18:34 silvia should no longer be muted 09:19:49 Jack: let me explain why it is a bad idea to include RTSP handling at *this* stage 09:20:19 ... the fact that we have one working implementation does not mean we understand fully the mechanism 09:20:26 RTSP has been developed with the fragment functionality as part of the protocol 09:20:32 ... except if Davy ensures he got all issues fixed 09:21:10 Davy: I'm also in favor of putting this into another document ... and take our time to check how it works 09:21:14 how hard is it to include this later into the document then, when we make it a separate document now? 09:21:38 why would it delay the LC? 09:21:57 no, not to remove it later - to update it later with more information 09:22:00 delay the LC as we would need to review it 09:22:21 I am not happy in adding at the last minute something as big as that without _any_ review before 09:22:29 and reviewing introduces delays 09:22:35 we don't know everything about caching right now either - there will be more updates necessary 09:22:54 so, if it is easy to add things later, I am fine 09:22:54 +1 to Silvia 09:23:26 but if that would be a problem, I object to making it a separate document, because we are ripping apart where ppl can find information about media fragments 09:23:49 why? 09:24:19 I would need to tell ppl: find the spec of URI fragments here, but how to use it with rtsp in this other doc 09:24:38 if someone want to use mediafrag in protocol 'bar' later on does it mean that we will have to revise our doc to add this new protocol? 09:24:53 Michael: we can include it and ask the community for feedback 09:24:59 no silvia, the rtsp spec will refer to the uri syntax one 09:25:02 it's not like rtsp is a new protocol 09:25:14 we expect people to be smart enough to understand what they read no? 09:25:17 Yves: it's still 2 docs 09:25:20 Jack: not at LC stage, you're supposed to have scope the spec 09:25:22 and? 09:25:39 do we want to merge rfc2616 and 3987 as well in our doc? 09:26:17 q+ 09:26:27 zakim, ack me 09:26:27 unmuting silvia 09:26:28 I see jackjansen on the speaker queue 09:26:31 zakim, ack silvia 09:26:31 I see jackjansen on the speaker queue 09:26:32 zakim, mute me 09:26:32 silvia should now be muted 09:26:42 Jack: this discussion is procedural 09:26:53 ... we all agree we will like to have rtsp in the spec 09:27:08 ... the question is whether adding it now, add a cost of 2 months we don't have! 09:27:17 ... does it give us enough benefits ? 09:27:46 q- 09:28:34 q+ 09:28:58 Erik: what is wrong of adding it now, few days of copy-pasting 09:29:04 ... and review it during LC 09:29:13 I agree 09:29:28 it also gives ppl from that community a need to review it 09:30:04 -silvia 09:30:10 Yves: it is not healthy to add things not which hasn't been reviewed 09:30:23 ... LC should have been published 6 months ago 09:31:00 +silvia 09:31:03 zakim, mute me 09:31:03 silvia should now be muted 09:31:07 Davy: do we want to be LCWD asap or do we want to cover RTSP? 09:31:27 zakim, unmute me 09:31:27 silvia should no longer be muted 09:32:31 zakim, mute me 09:32:31 silvia should now be muted 09:33:06 zakim, unmute me 09:33:06 silvia should no longer be muted 09:33:26 Jack: the second document is not that important ... since under my understanding, the problem of implementing with RTSP is trivial 09:33:45 ... and if it turns to not be trivial, then it will fit a 2.0 version of the spec 09:34:02 again +1 to Silvia 09:34:03 Silvia: but if if is trivial, then why not including it now in the document 09:34:22 Jack: what I have said is that with *my* understanding, it is trivial 09:34:27 ... but I might be very wrong 09:34:43 Silvia: problem is that you will not trust a note 09:34:51 ... and this is pushing people of our spec 09:35:19 ... i'm unhappy in splitting the document into multiple docs 09:35:56 Raphael: looking at the charter 09:35:59 ... "The Group will focus on developing a mechanism to uniquely identify a temporal fragment within an audio or video object, that is independent of the underlying audio or video codec in use, and will also investigate the delivery of the requested resource to allow full or partial media retrieval using at least the HTTP protocol. " 09:36:00 q+ 09:36:10 q+ 09:36:27 q? 09:36:35 zaim, mute me 09:36:39 zakim, mute me 09:36:39 silvia should now be muted 09:36:43 Silvia: do we really need to understand all the bits of the spec? 09:36:53 Erik: I fully agree with what Silvia has said 09:37:00 zakim, ack Erik 09:37:00 I see Yves, jackjansen on the speaker queue 09:37:18 Yves: looking at our traffic on our mailing list, not that many emails about rtsp 09:37:21 q- same point as yves 09:37:27 q- 09:37:32 ... we haven't received enough attention and review on this point 09:37:32 same point as yves 09:37:39 rtsp got less review because it was much simpler and needed no discussion 09:37:53 q? 09:38:07 zakim, ack yves 09:38:07 I see no one on the speaker queue 09:38:38 zakim, unmute me 09:38:38 silvia should no longer be muted 09:39:21 Raphael: the wiki page has never been included in the doc so that might explain the lack of attention 09:39:25 zakim, mute me 09:39:25 silvia should now be muted 09:39:30 Yves: having everything in one doc is silly anyway, even html5 is slowly moving away from this 09:39:41 ... I don't see studies that people will not look at 2 documents 09:39:52 Raphael: this is a problem of compactness 09:40:05 proposal: could we have a few days of review for the rtsp section and then make the decision? 09:40:42 by when do we need to make the decision to move the doc to LC? 09:40:51 Jack: the documents is a workaround solution 09:41:32 one more week should be enough to learn more about rtsp and make a decision either way 09:42:15 Jack: the problem is not looking at our wiki page which is ok 09:42:27 ... the problem is looking at the rtsp spec 09:42:34 ... and make sure we are not saying stupid things 09:42:45 I think you can read the rtsp spec within an hour, honestly 09:42:55 I would look at it 09:43:14 zakim, unmute me 09:43:14 silvia should no longer be muted 09:43:48 Silvia: yes, I have already used rtsp implementations 09:44:14 Raphael: I wonder Yves how would you rate your knowledge of rtsp? 09:44:40 Silvia: i think for temporal fragment over rtsp, there is no problem 09:44:48 ... we might have problems with other dimensions 09:45:06 ... as Yves said, the problem of cutting the media depending on the codec is the same 09:45:12 ... we just have the protocol to fix 09:45:43 zakim, mute me 09:45:43 silvia should now be muted 09:45:54 Davy: I have also a number of concerns about smpte time codes for rtsp 09:46:00 raphael, I would qualify it as 'very rusty' 09:46:16 ... rtsp does not have the content mapping 09:46:27 ... should we define it as well for rtsp ? 09:46:41 ... I think there are things that MUST been discussed before 09:46:48 zakim, unmute me 09:46:48 silvia should no longer be muted 09:46:51 ... and I don't think it is feasible in one week 09:47:22 Silvia: assuming we do not know all the details, does not make sense to at least include what we have now in the spec? 09:47:41 ... actually, the best way to have feedback on what we have is to include it in the document 09:48:04 ... afterwards, we might take out this part if we have not enough technical knowledge 09:48:11 ... I see this section as mature as others 09:48:23 Raphael: I think I disagree with this latest statemetn 09:48:25 I am strongly against putting a whole new section that didn't get _any_ review and raises lots of question in a LC document 09:48:26 zakim, mute me 09:48:26 silvia should now be muted 09:48:37 in a regular WD yes, but not on a LC 09:48:38 s/statemetn/statement 09:49:03 what comes after LC? 09:49:17 Example of problem witrh rtsp: interaction with section 10.0 REDIRECT 09:49:27 I think we will have a second LC anyway 09:49:49 Jack: I think we should not do it, not include rtsp into this doc 09:50:00 ... we need much serious thoughts 09:50:07 http://tools.ietf.org/html/rfc2326#page-39 09:50:11 ok, I won't stay in the way 09:50:25 s/stay/stand/ 09:50:35 we can have multiple LC for sure 09:50:41 even CR->LC phases 09:51:19 note that I completely agree to have a new WD for RTSP, that we can fasttrack if the doc is in good shape 09:51:29 Raphael: I suggest to add a link towards a wiki page to get feedback 09:51:41 +1 09:51:45 isnt' that like admitting we aren't finished with the doc for LC? 09:51:56 ... and a generic sentence stating the importance of the genericity of the URI syntax 09:52:17 ok, fair enough 09:52:23 +1 09:52:29 I retract my objection 09:52:39 +1 09:52:44 0 09:52:53 Raphael: 0 09:53:05 +1 09:54:08 ACTION: troncy to address RTSP handling, pointing to the wiki page for the processing, making sure the syntax is stated to be generic 09:54:08 Created ACTION-179 - Address RTSP handling, pointing to the wiki page for the processing, making sure the syntax is stated to be generic [on Raphaƫl Troncy - due 2010-06-30]. 09:54:45 zakim, unmute me 09:54:45 silvia should no longer be muted 09:55:01 Section 7.4 should it be removed? 09:55:04 ALL: yes 09:55:13 Raphael: ok, I will remove it 09:55:22 close ACTION-178 09:55:22 ACTION-178 Review the complete document, remove unnecessary editorial notes before publication closed 09:55:31 zakim, mute me 09:55:31 silvia should now be muted 09:55:59 requirements have been turned into normal text 09:56:00 done :) 09:56:31 but the requirements document is referenced at the start of the document 09:56:40 zakim, unmute me 09:56:40 silvia should no longer be muted 09:57:16 zakim, mute me 09:57:16 silvia should now be muted 09:57:44 zakim, unmute me 09:57:44 silvia should no longer be muted 09:57:58 Raphael: multiple tracks, is it all clear now? 09:58:19 Silvia: no, sometimes we say one, and sometimes multiple ones 09:58:24 ... it must be consistent 09:59:04 ... my question is: do we translate this into one header in the request? 09:59:47 zakim, mute me 09:59:47 silvia should now be muted 09:59:48 Silvia: the question is do we want to have multiple occurrences of "track" in the URI and a single one in the header? 10:00:01 Jack: do we need to escape semi-colon? 10:00:18 question is: do we agree that there are several "track" parameters in the URI, but only a single on in the HTTP header with the different tracks separated by semicolon 10:00:30 s/one/one/ 10:00:37 Yves: mutiple tracks mean many many many packets 10:00:47 ... we cannot handle this in a multi-part message response 10:01:02 Davy: the response might be a redirect 10:01:08 ... the problem is for the request 10:01:08 q+ 10:01:36 Yves: the plan is to use the comma in the request as a separator 10:01:42 zakim, ack Jack 10:01:42 I see no one on the speaker queue 10:02:30 Jack: people are aware that the fact we are using %escaping UTF-8 strings in the headers? 10:02:42 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html raphael 10:03:26 I can make these changes, yes 10:04:09 zakim, unmute me 10:04:09 silvia should no longer be muted 10:04:44 Topic: 4. ISSUE-17 10:04:47 zakim, mute me 10:04:47 silvia should now be muted 10:04:54 Silvia: we are waiting for i18n answer 10:05:03 Jack: we need to take a decision when they reply 10:05:20 Yves: it will be a LC issue 10:05:24 ... no problem 10:05:29 Topic: 5. AOB 10:06:37 Raphael: Does WebM fit in our table? 10:07:04 thanks, bye! 10:07:07 - +33.4.93.00.aaaa 10:07:08 -Yves 10:07:08 -Jack 10:07:10 -Michael 10:07:10 jackjansen has left #mediafrag 10:07:11 -silvia 10:07:16 ACTION: davy to add the WebM codec into our fitting table 10:07:17 Created ACTION-180 - Add the WebM codec into our fitting table [on Davy Van Deursen - due 2010-06-30]. 10:07:38 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html davy 10:07:46 Summary: document edited once more today, and then LCWD issue, publication hopefully tomorrow 10:07:54 [meeting adjourned] 10:07:58 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html raphael 10:08:42 -Erik 10:08:43 IA_MFWG()5:00AM has ended 10:08:44 Attendees were +33.4.93.00.aaaa, Yves, +0329331aabb, Erik, Davy, +31.20.592.aacc, Jack, +3539149aadd, Michael, +61.2.801.2.aaee, silvia 10:14:00 ScribeOptions: -final -noEmbedDiagnostics 10:14:01 I have made the request to generate http://www.w3.org/2010/06/23-mediafrag-minutes.html raphael 10:14:28 zakim, bye 10:14:28 Zakim has left #mediafrag 10:14:33 RRSAgent, bye 10:14:33 I see 2 open action items saved in http://www.w3.org/2010/06/23-mediafrag-actions.rdf : 10:14:33 ACTION: troncy to address RTSP handling, pointing to the wiki page for the processing, making sure the syntax is stated to be generic [1] 10:14:33 recorded in http://www.w3.org/2010/06/23-mediafrag-irc#T09-54-08 10:14:33 ACTION: davy to add the WebM codec into our fitting table [2] 10:14:33 recorded in http://www.w3.org/2010/06/23-mediafrag-irc#T10-07-16