14:00:30 RRSAgent has joined #tt 14:00:30 logging to http://www.w3.org/2015/08/20-tt-irc 14:00:32 RRSAgent, make logs public 14:00:32 Zakim has joined #tt 14:00:34 Zakim, this will be TTML 14:00:34 I do not see a conference matching that name scheduled within the next hour, trackbot 14:00:35 Meeting: Timed Text Working Group Teleconference 14:00:35 Date: 20 August 2015 14:01:48 present+ Thierry 14:02:32 present+ nigel, atai, mike 14:02:36 chair: nigel 14:02:41 scribe: nigel 14:02:53 courtney has joined #tt 14:04:52 present+ courtney 14:05:23 mike has joined #tt 14:05:58 Topic: This meeting 14:06:14 nigel: We are adding ATSC liaison to the agenda as requested. 14:06:24 nigel: Any other business? 14:06:33 group: no other business 14:06:45 regrets: pal 14:07:54 nigel: Looking ahead, I'm going to have difficulty meeting on Thursday 10th. Will anyone else have problems? 14:08:01 atai: Yes, I won't be able to join on that day. 14:08:21 nigel: We can leave it scheduled but dependent on members wishing to attend and join, or cancel that one if need be. 14:08:49 Topic: Action Items 14:08:52 action-414? 14:08:52 action-414 -- Nigel Megitt to Add unicode liaison to weekly meeting agenda -- due 2015-08-20 -- PENDINGREVIEW 14:08:52 http://www.w3.org/AudioVideo/TT/tracker/actions/414 14:09:00 close action-414 14:09:00 Closed action-414. 14:09:25 Topic: ATSC Liaison 14:09:54 https://lists.w3.org/Archives/Member/member-tt/2015Aug/0002.html 14:10:59 nigel: We received this liaison from ATSC. Would anyone like to take us through it? 14:12:28 mike: ATSC is heading down the path of using IMSC 1 for its next generation TV. A member 14:12:46 ... has proposed support for extensions for colorGamut and 3D disparity. 14:13:02 ... disparity is already in TTML2, but there's nothing I'm aware of on HDR or wide color gamut 14:13:15 ... in this group. The proposal is to get us to think about it more than anything else. 14:13:26 ... There are 2 specific proposals for pulling those features into IMSC 1. 14:13:39 ... There was a lively discussion on the reflector about color gamut and what it might be useful 14:13:55 ... for. I think that's down to, not so much that an author would want to use a wide color gamut, 14:14:10 ... but that it would help implementations if the text signalled colors in a wide color gamut. 14:14:26 ... That was more to get W3C TTWG thinking about the issue, which was successful based on 14:14:43 ... the email exchange. The rest is to do with logistics of timing and in what form the requests 14:14:48 ... might appear in the future. 14:15:10 nigel: I had a conversation with Thierry and Pierre about the logistics side. Pierre and I 14:15:52 ... concluded that the best thing for IMSC right now given the process state that its in is to 14:16:06 ... keep it closed to new features, but to add them into the scope of TTML2 and IMSC 2. 14:16:15 mike: Any thoughts on the schedule for all this work? 14:18:45 nigel: It's clear that we're already behind relative to our intended timescale on TTML2. If we 14:19:03 ... want to speed things up then we need more input from members other than Glenn. IMSC 2 14:19:26 ... is planned for as soon as possible after TTML2. I wouldn't be surprised given the current 14:19:42 ... state if that falls into 2016, it's hard to say exactly when. 14:21:28 mike: With my TTWG hat on, I agree that not delaying IMSC 1 is the right answer, though it 14:21:41 ... isn't necessarily what ATSC wants to hear. What's the timescale for publishing IMSC 1? 14:23:58 nigel: That's entirely dependent on implementation work on IMSC 1. We can't move on until 14:24:11 ... we have met the exit criteria for the CR, which requires implementation work. 14:24:52 mike: It sounds as though we need some feedback from pierre on that. 14:25:03 nigel: Yes, he's got the best view right now. 14:27:34 mike: We possibly need dave to come in on the colour mapping question. 14:29:31 nigel: It's not clear to me that there's any specification work missing that we should take on. 14:29:44 ... I have the impression that the colour spaces are all well defined and the semantic in TTML 14:29:46 ... is also clear. 14:29:59 mike: We may need some additional metadata to indicate where the sRGB 8 bits live in the 14:30:05 ... 12 bit value space. 14:31:26 nigel: I'd like to see a proposal for that on the email reflector - I'm a little sceptical right now. 14:32:02 mike: Yes, I'll continue the email thread. I'm also happy to start preparing a liaison response for thi 14:32:06 s/thi/ 14:32:16 ... the liaison, to be sent back to ATSC. 14:32:28 nigel: Pierre also volunteered to assist with that so between you two we should be able to get 14:32:42 ... something together. The key points are that we won't include the features in IMSC 1 but 14:32:57 ... will consider them for IMSC 2. For the color gamut question we need to have more discussion 14:33:03 ... and conclude on the issue before we respond. 14:34:38 Topic: HTMLCue Proposal 14:34:56 Courtney: I talked to the webkit team and they said they have no plans to add support for 14:35:00 ... anything but WebVTT. 14:35:31 atai: There's nothing more from me on this - we just need to think how to proceed. 14:35:48 ... Nigel made a proposal to make it more concrete as to what we should propose. We need 14:35:54 ... to decide if we need to include that. 14:37:32 nigel: That's right. I had a think about this and a look at the dash.js work, and the simple 14:37:48 ... approach is simply to replace the html content of a target div element. That would be my 14:38:12 ... baseline proposal, since it appears to work. 14:38:25 atai: I wonder if we could get stuck in detail if we discuss this. 14:38:43 ... Getting a general feeling about if people are willing to implement this is more important. 14:40:01 I need to get to another meeting. thanks for the time on the ATSC liaison. hear you next week. 14:40:34 http://www.w3.org/2001/11/StdLiaison#main 14:40:45 nigel: Looking back at last week's minutes, there were 3 actions, Courtney's, mine and Thierry was going to check about WHATWG. 14:40:59 tmichel: There's actually no liaison with WHATWG, so I contacted Michael Smith of the HTML WG 14:41:14 ... to discuss how we might contact WHATWG. He suggested the best way might be to post 14:41:27 ... to the public email address on this issue: 14:41:30 whatwg@whatwg.org 14:41:38 public mailing list for the WHATWG. 14:42:00 tmichel: And he said that if we needed he could also help. He's not the formal liaison guy but 14:42:14 ... he knows those guys and has been working with WHATWG for many years. 14:43:28 atai: I can do that, but it would be on my own - it would be better from TTWG. 14:43:38 tmichel: I agree it would be better to send it on behalf of TTWG to add leverage. 14:43:51 nigel: Okay, I'm happy to do that then as chair. 14:44:15 ... The draft text we have now is: https://lists.w3.org/Archives/Public/public-tt/2015Aug/0009.html 14:45:24 nigel: Just rereading that, imagining WHATWG receiving it, I guess it looks okay. I assume they 14:45:28 ... know what TPAC is. 14:47:52 The people from who I would think you’d want to get most feedback on this 14:47:52 > particular proposal are Philip Jägenstedt (Opera/Blink), Silvia Pfeiffer, 14:47:52 > and Eric Carlson & Jer Noble (from Apple). 14:47:52 > 14:48:09 nigel: I'm happy to take an action to edit the draft and share with those people for initial 14:48:16 ... input prior to posting to the public WHATWG list. 14:48:23 Ian Hickson right would not be the most productive, especially since at the 14:48:23 > moment, he’s working on other things that don’t have much to to with the 14:48:23 HTML spec. 14:48:56 Action: tmichel Send nigel email addresses of HTMLCue proposal reviewers 14:48:56 Created ACTION-415 - Send nigel email addresses of htmlcue proposal reviewers [on Thierry Michel - due 2015-08-27]. 14:49:21 Action: nigel Edit proposal and send to HTMLCue proposal reviewers as listed by tmichel, following Action-415 14:49:22 Created ACTION-416 - Edit proposal and send to htmlcue proposal reviewers as listed by tmichel, following action-415 [on Nigel Megitt - due 2015-08-27]. 14:49:53 nigel: If all the feedback is positive I'll go ahead and send to WHATWG, otherwise I'll bring it 14:49:58 ... back to this group for further discussion. 14:50:21 nigel: I'll CC interested folk too so you don't lose track of the discussion. 14:50:48 Topic: Unicode CLDR proposal 14:51:02 nigel: I've not had any response from Mark Davis yet, so as per our discussion last week 14:51:14 ... I will create an issue ticket with Unicode, containing the proposal. 14:51:44 Action: nigel Create ticket with Unicode for CLDR proposal, or add to existing one. 14:51:45 Created ACTION-417 - Create ticket with unicode for cldr proposal, or add to existing one. [on Nigel Megitt - due 2015-08-27]. 14:52:18 Topic: Issues 14:52:27 issue-402? 14:52:28 issue-402 -- The permitted delimiters for two value attributes like cellResolution and frameRateMultiplier are undefined -- closed 14:52:28 http://www.w3.org/AudioVideo/TT/tracker/issues/402 14:52:41 nigel: I raised this in error and it's already closed - thanks to Glenn for putting me right. 14:52:45 issue-403? 14:52:45 issue-403 -- The ordering of features in Appendix D differs from that in Appendix F -- raised 14:52:45 http://www.w3.org/AudioVideo/TT/tracker/issues/403 14:53:17 reopen issue-403 14:53:17 Re-opened issue-403. 14:53:50 Topic: TTML2 Editorial Actions 14:54:06 nigel: There are now examples in the TTML2 ED for padding on span and for textAlign on span. 14:55:23 Topic: TPAC 2015 14:55:40 nigel: Is there anything to add to the agenda, or does anyone need any assistance with TPAC, 14:55:44 ... e.g. with registration etc? 14:55:53 group: Nothing to add right now. 14:56:49 Topic: AOB 14:56:55 nigel: We've covered other business as planned already. 14:57:48 ... Just one note - referencing the earlier mention of dash.js, if anyone is interested in discussing 14:58:01 ... implementation work in that area, EBU is hosting an open session at IBC, as per the email 14:58:05 ... sent earlier in the week. 14:58:14 nigel: Thanks very much everyone. [Adjourns meeting] 14:58:20 rrsagent, generate minutes 14:58:20 I have made the request to generate http://www.w3.org/2015/08/20-tt-minutes.html nigel 14:59:36 regrets+ frans 15:03:25 s/Ian /tmichel: Ian 15:03:36 s/> moment/tmichel: moment 15:03:50 s/HTML spec/tmichel: HTML spec 15:04:19 rrsagent, generate minutes 15:04:19 I have made the request to generate http://www.w3.org/2015/08/20-tt-minutes.html nigel 15:06:47 s/> p/ 15:07:02 s/> an/ an 15:07:09 s/articular/particular 15:07:26 s/>/ 15:07:35 s/tmichel: Ian/Ian 15:07:41 s/tmichel: moment/moment 15:07:50 s/tmichel: HTML/HTML 15:07:56 rrsagent, generate minutes 15:07:56 I have made the request to generate http://www.w3.org/2015/08/20-tt-minutes.html nigel 15:08:58 ScribeOptions: -final -noEmbedDiagnostics 15:08:59 rrsagent, generate minutes 15:08:59 I have made the request to generate http://www.w3.org/2015/08/20-tt-minutes.html nigel 16:12:22 nigel has joined #tt 16:18:21 Zakim has left #tt