TTWG Meeting 2021-09-02

[nigelmegitt]

Agenda

1. This meeting
2. IMSC HRM
2.1 span elements are included in NBG(R_i) w3c/imsc#571
2.2 HRM and screen clearing after empty ISD w3c/imsc#575
3. TTML Tests
3.1 Working mode for making changes to test repositories
3.2 Making sure we have useful test expectations/references
4. Joint meeting requests
4.1 Media Synchronisation
4.2 Media and Entertainment Interest Group
4.3 Media Working Group
4.4 CSS Working Group
5. Charter
6. AOB – please notify of any other AOB now!

Time

15:00 - 16:00 (1 hours) UTC

Please be ready for a prompt start at 15:03am UTC time.

Our teleconference is scheduled with reference to UTC Time, the correct time of this teleconference in your locale may change.

Check https://www.timeanddate.com/worldclock/fixedtime.html?iso=20210902T15&p1=1440

W3C Calendar link: https://www.w3.org/events/meetings/cc92c9de-13de-49c8-9c08-1882127165c4/20210902T150000

Joining details:

see https://lists.w3.org/Archives/Member/member-tt/2021May/0001.html
(members-only link – if you can't see this and wish to join please contact me)

Future meetings and recent activity:

See the TTWG project board for upcoming meetings.

See individual agenda items for recent activity on specific products.

See the TTWG home page for links to repositories and recent activity.

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Agenda+ This meeting

Assign Roles

Chairs: Gary Katsevman, Nigel Megitt

Regrets:

Scribe:

Previous meeting: https://www.w3.org/2021/07/22-tt-minutes.html

Prioritise discussion for this meeting and look ahead

Check-point for order of topics and any other business.

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IMSC HRM

Blog post published as agreed: https://www.w3.org/blog/2021/08/keeping-the-complexity-of-imsc-documents-under-control/

span elements are included in NBG(R_i) w3c/imsc#571

This issue was closed awaiting more feedback from implementers; there has subsequently been more feedback from implementers.

HRM and screen clearing after empty ISD w3c/imsc#575

Opportunity for discussion.

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TTML Tests

Working mode for making changes to test repositories

Chair's proposal (from Nigel): we use the same process for making changes to the test repositories as we do for making changes to specification repositories, i.e. Pull Request -> 2 week minimum review period (usually*) -> merge if no outstanding objections.

* usually 2 week minimum review period: exceptions include minor editorial changes, high urgency changes where there is high participation and agreement to proceed, for example.

Making sure we have useful test expectations/references

Most of the TTML tests have expectations/references generated by TTPE, in SVG form. Most of the IMSC tests have expectations/references generated by imscJS, in PNG form. Should we, and can we generate PNG equivalents of the SVGs for the TTML tests? If so, who can take an action to do this?

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Joint meeting requests

TPAC dates have been circulated; TPAC will be virtual, and be held from 18-29 October.
The week from 25 to 29 October will be dedicated to the Joint and Group meetings.

We have (probably?) concluded that we do not wish to have a TTWG meeting, but there are options for joint meetings, and some representations have been made to Nigel as Chair.

We have until 10 September to declare meeting dates.

List of topics to discuss is currently at #191

Joint meetings to consider:

Media Synchronisation

APA / Silver joint meeting request for 20th October 10am Eastern (1400 UTC)

Note that there is a relatively new document in preparation: Synchronization Accessibility User Requirements available at https://raw.githack.com/w3c/apa/main/saur/ whose contents are likely to directly relate to those of the members of TTWG.

See also https://www.w3.org/WAI/APA/wiki/Meetings/TPAC_2021#Timed_Text_Working_Group_and_Media_Synchronization

Our options:

• Accept
• Propose alternative times (they wish to make the time work for Australia as well as US west coast)
• Decline

Media and Entertainment Interest Group

What agenda topics could we usefully add?

Media Working Group

What agenda topics could we usefully add?

CSS Working Group

What agenda topics could we usefully add?

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Charter

Current charter will end by the end of 2021 (this year) - in 4mo., need to develop new charter (or extension?)
https://www.w3.org/2020/12/timed-text-wg-charter.html

need to be taken into account: AC review period (6w?), W3C management review, horizontal review (2-3w?) = around 3mo

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Agenda+ AOB

[himorin]

agenda+ current charter will end by the end of 2021 (this year) - in 4mo., need to develop new charter (or extension?)
https://www.w3.org/2020/12/timed-text-wg-charter.html

need to be taken into account: AC review period (6w?), W3C management review, horizontal review (2-3w?) = around 3mo

[nigelmegitt]

Minutes at https://www.w3.org/2021/09/02-tt-minutes.html