ACTION-203: Investigate 708 border style mapping issues with mike's help

Investigate 708 border style mapping issues with mike's help

State:
closed
Person:
Philippe Le Hégaret
Due on:
September 26, 2013
Created on:
September 19, 2013
Associated Issue:
Region border
Related emails:
  1. {minutes} TTWG Meeting 27/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-27)
  2. {agenda} TTWG Meeting 27/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-26)
  3. {minutes} TTWG Meeting 20/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-20)
  4. {agenda} TTWG Meeting 20/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-19)
  5. RE: {agenda} TTWG Meeting 13/2/2014 (from mdolan@newtbt.com on 2014-02-13)
  6. Re: {agenda} TTWG Meeting 13/2/2014 (from glenn@skynav.com on 2014-02-13)
  7. {agenda} TTWG Meeting 13/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-12)
  8. {minutes} TTWG Meeting 6/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-06)
  9. Re: {agenda} TTWG Meeting 6/2/2014 (from silviapfeiffer1@gmail.com on 2014-02-06)
  10. Re: {agenda} TTWG Meeting 6/2/2014 (from silviapfeiffer1@gmail.com on 2014-02-06)
  11. Re: {agenda} TTWG Meeting 6/2/2014 (from singer@apple.com on 2014-02-05)
  12. {agenda} TTWG Meeting 6/2/2014 (from nigel.megitt@bbc.co.uk on 2014-02-05)
  13. {minutes} TTWG Meeting 30/01/2014 (from nigel.megitt@bbc.co.uk on 2014-01-30)
  14. {agenda} TTWG Meeting 30/01/2014 (from nigel.megitt@bbc.co.uk on 2014-01-30)
  15. {minutes} 16/1/14 TTWG meeting (from nigel.megitt@bbc.co.uk on 2014-01-16)
  16. {agenda} 16/1/14 TTWG meeting (from nigel.megitt@bbc.co.uk on 2014-01-16)
  17. TTWG Agenda for 9/1/14 (from nigel.megitt@bbc.co.uk on 2014-01-08)
  18. Minutes for 12/12/13 (from nigel.megitt@bbc.co.uk on 2013-12-12)
  19. TTWG Agenda for 12/12/13 (from nigel.megitt@bbc.co.uk on 2013-12-11)
  20. Re: TTWG Agenda for 5/12/13 (from nigel.megitt@bbc.co.uk on 2013-12-11)
  21. Re: TTWG Agenda for 5/12/13 (from glenn@skynav.com on 2013-12-11)
  22. RE: TTWG Agenda for 5/12/13 (from mdolan@newtbt.com on 2013-12-10)
  23. TTWG Agenda for 5/12/13 (from nigel.megitt@bbc.co.uk on 2013-12-04)
  24. Re: TTML Agenda for 21/11/13 (from cyril.concolato@telecom-paristech.fr on 2013-11-21)
  25. Re: TTML Agenda for 21/11/13 (from glenn@skynav.com on 2013-11-21)
  26. Re: TTML Agenda for 21/11/13 (from tmichel@w3.org on 2013-11-21)
  27. TTML Agenda for 21/11/13 (from nigel.megitt@bbc.co.uk on 2013-11-20)
  28. RE: TTML Agenda for 31/10/13 (from Sean.Hayes@microsoft.com on 2013-10-31)
  29. TTML Agenda for 31/10/13 (from nigel.megitt@bbc.co.uk on 2013-10-30)
  30. {minutes} TTML Meeting of 24/10/13 (from glenn@skynav.com on 2013-10-24)
  31. RE: TTML Agenda for 24/10/13 (from mdolan@newtbt.com on 2013-10-23)
  32. TTML Agenda for 24/10/13 (from nigel.megitt@bbc.co.uk on 2013-10-23)

Related notes:

Action not well-defined and no referenced issue; taking no action.

Glenn Adams, 5 Dec 2013, 20:22:48

Philippe will investigate and possibly open new issue (or resurrect an old issue).

Glenn Adams, 20 Feb 2014, 15:40:12

See also issue 191.

Glenn Adams, 20 Feb 2014, 15:44:23

Assuming this action is about edge styles (e.g. shadow), then see: https://www.w3.org/AudioVideo/TT/tracker/issues/191
which was closed with a note in the SDP profile to consider new styles to support 708 in a future version of TTML.

Mike Dolan, 20 Feb 2014, 15:50:43

Created during
http://www.w3.org/2013/09/19-tt-minutes.html

Philippe Le Hégaret, 27 Feb 2014, 14:41:54

Our border property comes from CSS:
https://dvcs.w3.org/hg/ttml/raw-file/default/ttml2/spec/ttml2.html#style-attribute-border

708 has border for Window:
[[
NONE=0, RAISED=1, DEPRESSED=2, UNIFORM=3, SHADOW_LEFT=4, and SHADOW_RIGHT=5.
]]
from http://en.wikipedia.org/wiki/CEA-708#SetWindowAttributes_.280x97_.2B_4_bytes.29

WebVTT maps it to the CSS property outline:
[[
::cue-region(uniform) {
outline: black solid 2px;
}
]]
https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#window-colors-and-borders

Characters have edges:
[[
{ NONE=0, RAISED=1, DEPRESSED=2, UNIFORM=3, LEFT_DROP_SHADOW=4, RIGHT_DROP_SHADOW=5, ILLEGAL_VAL0=6, ILLEGAL_VAL1=7 }
]]
http://en.wikipedia.org/wiki/CEA-708#SetPenAttributes_.280x90_.2B_2_bytes.29

WebVTT maps it to the CSS property text-shadow:
[[
::cue(.depressed) {
text-shadow: 1px 0 0 silver, 0 1px 0 silver, 0 -1px 0 #111111, -1px 0 0 #111111;
color: gray;
}
]]
https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#h3_further-cea-708-features


Philippe Le Hégaret, 27 Feb 2014, 15:01:44

CSS outline property:
http://www.w3.org/TR/css3-ui/#outline0

CSS text-shadow property:
http://www.w3.org/TR/css-text-decor-3/#text-shadow

Philippe Le Hégaret, 27 Feb 2014, 15:17:55

CSS text-shadow seems similar to TTML textOutline property:
https://dvcs.w3.org/hg/ttml/raw-file/default/ttml2/spec/ttml2.html#style-attribute-textOutline

Philippe Le Hégaret, 27 Feb 2014, 15:19:16

[nigel]: Regulation does not require support for 708 window border property; text outline already present in TTML2 draft. Therefore decision is to close this action with no further edits at this time.

27 Feb 2014, 15:39:40

Display change log.


David Singer <singer@apple.com>, Nigel Megitt <nigel.megitt@bbc.co.uk>, Chairs, Thierry Michel <tmichel@w3.org>, Philippe Le Hégaret <plh@w3.org>, Atsushi Shimono <atsushi@w3.org>, Staff Contacts
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <w3t-sys@w3.org>.
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