ISSUE-230: Forced display
Forced display
Forced display
- State:
- CLOSED
- Product:
- TTML2
- Raised by:
- Pierre-Anthony Lemieux
- Opened on:
- 2013-05-30
- Description:
- [The following is extracted from the liaison received from SMPTE at https://lists.w3.org/Archives/Member/w3c-archive/2012Sep/0214.html]
A forcedDisplay parameter shall be applicable to <p> elements and shall indicate that the element is to be displayed even if not explicitly activated. The forcedDisplay parameter shall be animatable.
Note: IMF Data Essence may be selected for presentation based on user preferences, as a result of user action, or by default. Such Data Essence is however displayed only if either (a) explicitly activated as a result of user action or (b) identified as “forced”.
- Related Actions Items:
- No related actions
- Related emails:
- Re: [ttml2] Action-369 Action-382 - draft dispositions flattened thread incorporating changes (from nigel.megitt@bbc.co.uk on 2015-03-19)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from nigel.megitt@bbc.co.uk on 2015-03-18)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from glenn@skynav.com on 2015-03-05)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from nigel.megitt@bbc.co.uk on 2015-03-05)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from glenn@skynav.com on 2015-03-04)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from nigel.megitt@bbc.co.uk on 2015-03-04)
- Re: [ttml2] Action-369 - collate smpte issues and draft dispositions (from nigel.megitt@bbc.co.uk on 2015-02-25)
- [ttml2] Action-369 - collate smpte issues and draft dispositions (from nigel.megitt@bbc.co.uk on 2015-02-06)
- Re: {agenda} TTWG Meeting 2014-12-11 (from nigel.megitt@bbc.co.uk on 2014-12-11)
- {agenda} TTWG Meeting 2014-12-11 (from nigel.megitt@bbc.co.uk on 2014-12-10)
- {minutes} TTWG Meeting 27/11/2014 (from nigel.megitt@bbc.co.uk on 2014-11-27)
- {agenda} TTWG Meeting 27/11/2014 (from nigel.megitt@bbc.co.uk on 2014-11-26)
- {agenda} TTWG Meeting 29/5/2014 (from nigel.megitt@bbc.co.uk on 2014-05-28)
- Re: ISSUE-312 (forcedDisplay should be in ttm): forcedDisplay attribute is metadata so should be in ttm not tts namespace [TTML IMSC 1.0] (from nigel.megitt@bbc.co.uk on 2014-05-27)
- {minutes} TTML Meeting of 24/10/13 (from glenn@skynav.com on 2013-10-24)
- RE: TTML Agenda for 24/10/13 (from mdolan@newtbt.com on 2013-10-23)
- TTML Agenda for 24/10/13 (from nigel.megitt@bbc.co.uk on 2013-10-23)
- ISSUE-230 (Forced display): Forced display [TTML.next] (from sysbot+tracker@w3.org on 2013-05-30)
Related notes:
I don't understand this use case. Why would an author explicitly mark content that a user can force to be displayed even though it is not active?
Glenn Adams, 30 May 2013, 20:14:05[glenn]: perhaps add a 'force' role?
6 Jun 2013, 14:44:13[pal]: use case: forces the display of those subtitles that are associated with klingon speech and that all users should see -- the other subtitles, e.g. english subtitle over english speech, should be shown only to those users that have elected to do so.
6 Jun 2013, 14:58:20Pal: P2
Philippe Le Hégaret, 24 Oct 2013, 15:43:11Move up to P1.
Planned use by IMSC. In use by CFF-TT. Widespread use in Blu Ray.
Suggest defining inheritable tts:forcedDisplay with the following properties
Values: false | true
Initial: false
Applies to: body, div, p, region, span
Inherited: yes
Percentages: N/A
Animatable: discrete
With the addition of a 'condition' attribute and a 'forced' bound parameter for use with a parameter-function, it is possible to express conditional content/styling predicated upon the external setting of a 'forced' parameter.
See https://dvcs.w3.org/hg/ttml/rev/0933a6108611 .
Display change log
