IRC log of tt on 2026-01-15

Timestamps are in UTC.

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logging to https://www.w3.org/2026/01/15-tt-irc
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RRSAgent, make logs Public
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Meeting: Timed Text Working Group Teleconference
16:01:06 [nigel]
scribe: nigel
16:01:08 [nigel]
Chair: Nigel
16:01:11 [nigel]
Regrets: Gary
16:01:19 [nigel]
Agenda: https://github.com/w3c/ttwg/issues/325
16:01:50 [nigel]
Present+ Atsushi, Chris_Needham, Nigel
16:02:19 [nigel]
Previous meeting: https://www.w3.org/2025/12/18-tt-minutes.html
16:03:02 [nigel]
Topic: This meeting
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Present+ Cyril
16:03:13 [cpn]
scribe+ cpn
16:04:11 [cpn]
regrets: Gary
16:04:25 [cpn]
Topic: Agenda review
16:04:56 [cpn]
Nigel: One PR on DAPT on DAPT/IMSC compatibility
16:05:16 [cpn]
... For IMSC 1.3, there are open PRs, nothing flagged for the agenda
16:05:28 [cpn]
... Any other topics?
16:05:52 [cpn]
... I have an AOB regarding Pierre
16:06:01 [cpn]
(nothing)
16:06:26 [cpn]
Topic: DAPT
16:06:35 [cpn]
Subtopic: CRS publication
16:06:43 [cpn]
Nigel: This was published on 18 December
16:07:25 [cpn]
... Aside from Informative changes that require a new CRS, this might be the last one
16:08:52 [cpn]
... For the implementation report, we haven't worked out what to do about the current implementation
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16:09:25 [cpn]
... I haven't open sourced the BBC implementation yet
16:09:31 [cpn]
... When can we organise that?
16:09:38 [cpn]
Cyril: Week after next should be fine
16:10:02 [cpn]
... Week of Jan 26th
16:10:21 [cpn]
Nigel: Let's aim for that, and that'll push me to do the open sourcing
16:11:04 [cpn]
Nigel: We need to work out how to describe this in the implementation report
16:11:16 [cpn]
... Generating content isn't passing tests
16:11:28 [cpn]
s/isn't/isn't the same thing as/
16:11:51 [cpn]
Cyril: We need two passing implementations, they don't both need to be validation tools
16:12:50 [cpn]
... If the authoring tool creates content that represents the same features [...]
16:13:17 [cpn]
... We may have an issue with invalid features, as the authoring tool won't generate invalid content
16:13:29 [cpn]
Nigel: We need two implementations of each feature
16:14:14 [cpn]
... The test is a validation test. If we show the implementation generates content that passes valid and invalid tests, we're good
16:14:40 [cpn]
... If content fails validation, I'd say it's not a valid implementation of the feature
16:15:11 [cpn]
Cyril: So have a table showing, for each feature, how many implementations are passing, then in the cell how many implementations are validating and how many are creating
16:15:51 [cpn]
Nigel: Something like that, yes. We currently have a "tests passed" column, we could have a feature implementation column
16:16:38 [cpn]
Nigel: [checks the CR exit criteria]
16:17:01 [cpn]
Nigel: What we document in the table is the number of independent implementations of the feature
16:17:12 [cpn]
... We can say what type of implementation that is, to make it clear
16:17:29 [cpn]
... So we'll need to refactor that table in the implementation report
16:17:43 [cpn]
Cyril; The one feature our tool doesn't implement is the audio tag
16:18:15 [cpn]
Nigel: There is one feature for that, xml:lang audio non-matching
16:18:41 [cpn]
... For that we need to create content and check the language is different from the parent
16:18:55 [cpn]
... We also have to deal with all the at-risk features
16:19:58 [cpn]
Subtopic: DAPT/IMSC compatibility
16:20:21 [cpn]
Nigel: We have one PR open, #333. Pierre made some comments, that I still need to finish responding to
16:20:48 [cpn]
... Add DAPT signalling to the IMSC signalling section. I need to move the IMSC signalling section in the DAPT spec somewhere else
16:21:21 [cpn]
... I need to do an editorial pass to fix this. We have references to 3 different versions of IMSC, which isn't intentional
16:21:35 [cpn]
... All informative changes. It'll need review
16:22:21 [cpn]
Topic: IMSC 1.3
16:22:53 [cpn]
Nigel: CRS publication also happened on 18 December
16:23:06 [cpn]
... There are a few PRs open, but none marked for the agenda today
16:23:21 [cpn]
... Some PRs have been merged since our last call. That triggered a new CR Draft
16:23:31 [cpn]
... The most recent publication is 20th December
16:23:53 [cpn]
... I don't think there's any reason we need another CR Snapshot as we're not expecting to make more substantive changes
16:29:57 [cpn]
... Anything to discuss on IMSC 1.3?
16:29:58 [cpn]
(nothing)
16:30:00 [cpn]
Topic: AOB
16:31:03 [cpn]
Nigel: As mentioned at the end of our last call, MovieLabs is no longer a W3C member, and we're working to see if we can find a way to accept Pierre's offer to continue shepherding IMSC 1.3 to Recommendation
16:36:33 [cpn]
Nigel: Anything else?
16:36:35 [cpn]
(nothing)
16:36:46 [cpn]
Nigel: Next call in 2 weeks time
16:36:52 [cpn]
[adjourned]
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rrsagent, draft minutes
16:36:58 [RRSAgent]
I have made the request to generate https://www.w3.org/2026/01/15-tt-minutes.html cpn
16:37:09 [nigel]
i/Nigel/Topic: Meeting close
16:37:54 [nigel]
i/[ad/Agenda for 2026-01-29 call -> https://github.com/w3c/ttwg/issues/326
16:38:03 [nigel]
rrsagent, generate minutes
16:38:05 [RRSAgent]
I have made the request to generate https://www.w3.org/2026/01/15-tt-minutes.html nigel
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s/Topic: This meeting//
16:38:47 [nigel]
Regrets+ Andreas
16:42:29 [nigel]
s/If we show the implementation generates content that/If we show the implementation generates content that is good according to a validator that
16:43:00 [nigel]
s/Cyril;/Cyril:
16:43:31 [nigel]
s/xml:lang audio non-matching/#xmlLang-audio-nonMatching
16:43:52 [nigel]
s/check the language is different from the parent/check the language is not different from the parent
16:44:37 [nigel]
rrsagent, generate minutes
16:44:39 [RRSAgent]
I have made the request to generate https://www.w3.org/2026/01/15-tt-minutes.html nigel
16:45:17 [nigel]
scribeOptions: -final -noEmbedDiagnostics
16:45:20 [nigel]
zakim, end meeting
16:45:20 [Zakim]
As of this point the attendees have been Atsushi, Chris_Needham, Nigel, Cyril
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RRSAgent, please draft minutes v2
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I have made the request to generate https://www.w3.org/2026/01/15-tt-minutes.html Zakim
16:45:29 [Zakim]
I am happy to have been of service, nigel; please remember to excuse RRSAgent. Goodbye
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rrsagent, excuse us
16:45:39 [RRSAgent]
I see no action items