16:00:28 RRSAgent has joined #tt 16:00:28 logging to http://www.w3.org/2017/03/02-tt-irc 16:00:30 RRSAgent, make logs public 16:00:30 Zakim has joined #tt 16:00:32 Zakim, this will be TTML 16:00:32 ok, trackbot 16:00:33 Meeting: Timed Text Working Group Teleconference 16:00:33 Date: 02 March 2017 16:00:49 Present: Dae, Glenn, Nigel 16:00:52 Regrets: None 16:00:54 Chair: Nigel 16:01:48 Present+ Pierre, Thierry 16:01:52 Scribe: Nigel 16:01:59 Present+ Andreas 16:02:16 Topic: This Meeting 16:03:38 Nigel: Today, we have a proposal on meeting times, one IMSC issue and some TTML issues. 16:03:47 .. Any other topics to cover? 16:04:21 Andreas: I'd like to cover the pull request on TTML1. 16:04:29 mike has joined #tt 16:04:32 Topic: Meetings times 16:05:01 Dae: I think there's enough to talk about between now and the end of the month I propose 16:05:32 .. to start "early", at 10am Boston time, so we can have longer meetings. 16:05:49 Nigel: By the way, DST comes in, in the US, soon, and at the end of March in Europe. 16:06:02 Thierry: I believe it is on the 12th in the US and the 26th in Europe. 16:06:06 Present+ Mike 16:06:46 Thierry: So there is an impact in Europe, but we are back in sync after March 12th. 16:06:59 Nigel: Dae, I think this is a good suggestion. 16:07:19 Andreas: It's fine for me to start an hour earlier but I cannot allocate 2 hours to the meeting, however this is not a problem if you go ahead. 16:08:42 Nigel: Okay as Chair I'm going to make the call and say we will do this, begin at 10am Boston and set a duration of 2 hours for all the remaining meetings in March. 16:09:00 Topic: IMSC 16:09:17 -> https://github.com/w3c/imsc/issues/213 foreign namespace usage is underspecified 16:20:22 Mike: Regarding the example of smpte:information my view is that it is an error in the 16:20:34 .. SMPTE-TT spec, and it should say "descendant" of the head element, with the intent that 16:20:45 .. it be made a child of the `metadata` element under `head`. 16:21:22 Glenn: The reason we put `metadata` everywhere was to support the addition of foreign 16:21:45 .. namespace data, with the exception of the `tt` element on the basis that such metadata 16:21:52 .. could be placed under `head/metadata`. 16:23:28 tmichel has joined #tt 16:30:52 atai has joined #tt 16:35:59 Glenn: It is a bit indirect but if you follow through TTML1 from §3 to §4 to §5 the foreign 16:36:12 .. namespace elements _are_ pruned because their names are not present in the abstract 16:36:15 .. document type. 16:36:29 Nigel: That's an argument contrary to my reading, but I can accept that. 16:36:39 Andreas: That matches my understanding too. 16:38:53 group: [seems to have consensus that foreign namespace elements are prohibited in TTML1 except as children of metadata] 16:39:19 Nigel: My concern for the concrete encoding in IMSC1 is that we may prohibit the addition 16:39:46 .. of vocabulary that is orthogonal to processing defined in TTML and IMSC and that may 16:39:51 .. prevent some useful use cases. 16:40:04 Mike: It seems like an arbitrary syntactical restriction since foreign namespace attributes 16:40:11 .. are allowed - why allow attributes but not elements? 16:40:35 Glenn: That was a deliberate choice to avoid putting TTML namespace elements as children 16:40:40 .. of foreign namespace elements. 16:41:38 .. A clarification may be useful in TTML1 and possibly a normative statement in TTML2 would be advisable. 16:43:23 Nigel: Is everyone except me here comfortable with prohibiting foreign namespace elements in IMSC1 but permitting foreign namespace attributes? 16:43:36 Mike: I don't want to add further restrictions but I think that is what TTML1 says today. 16:43:48 .. I want to be crystal clear in IMSC1, and then we can take up the question in TTML1 and TTML2. 16:45:51 group: Consensus to clarify in IMSC 1 that TTML1 permits foreign namespace elements only in tt:metadata and attributes everywhere, §6.2 of IMSC1. 16:46:04 Pierre: There's already a note referring to structural elements of TTML1, so it could be an 16:46:19 .. extension to that. We may want to go further, or stay silent, I'm not sure which yet. 16:47:03 Nigel: Who will take this action? 16:47:15 Pierre: I will do this, and check in with Mike before posting as a PR? 16:47:24 Mike: I'm relieved of the action from last week. 16:47:42 Topic: TTML 16:48:00 Dae: If anyone is concerned that we cannot meet the TTML2 WR deadline please raise any 16:48:08 .. issues that will block us from getting there. 16:48:28 Pierre: Movielabs' position is that all issues have to be resolved before by WR, either by closing or deferring them. 16:48:45 .. So a priori it means every issue that has not been assigned by consensus to TTML.next. 16:49:17 Dae: For example the issues raised by i18n review. 16:49:28 Pierre: I think anyone in the group can take a stab at resolving those issues. 16:49:43 .. There are some that Movielabs has stronger opinions on but in general it is not possible 16:49:48 .. to defer them en masse. 16:50:59 Nigel: The horizontal review comments should not be ignored but we may be able to address 16:51:08 .. them after WR and before CR. 16:51:17 Pierre: I agree with that. 16:52:43 Nigel: I need to run now but the point is made Dae that we have issues to cover. 16:53:03 Dae: We should focus on the ones that are not 'easy' first. 16:53:23 Glenn: I don't intend to address the HR comments before WR by the way, so we need to 16:53:31 .. discuss what to do about those if there is not consensus on that. 16:53:36 Nigel: Thanks everyone. [adjourns meeting] 16:53:39 rrsagent, make minutes 16:53:39 I have made the request to generate http://www.w3.org/2017/03/02-tt-minutes.html nigel 16:55:46 ScribeOptions: -final -noEmbedDiagnostics 16:55:47 rrsagent, make minutes 16:55:47 I have made the request to generate http://www.w3.org/2017/03/02-tt-minutes.html nigel 16:59:52 atai has left #tt 18:35:48 Zakim has left #tt 18:40:00 nigel has joined #tt 18:40:23 s/as a PR?/as a PR. 18:40:25 rrsagent, make minutes 18:40:25 I have made the request to generate http://www.w3.org/2017/03/02-tt-minutes.html nigel