ISSUE-1: dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions

dynamicFlow

dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions

State:
CLOSED
Product:
TTML 1.0
Raised by:
Geoff Freed
Opened on:
2008-09-19
Description:
One of my concerns about the current dynamicFlow in DFXP is that it
cannot emulate an important feature of EIA-608 captions, which is the
ability to create and change regions on the fly. Currently,
dynamicFlow can feed text into pre-created regions in pre-specified
locations. In a real-time-captioning situaton, region locations may
not be known ahead of time, and during a broadcast blocks of caption
text sometimes have to be moved from, say, the lower-third of the
picture to the upper-third to avoid covering important graphics, or
sometimes they are just moved up (or down) one or two rows. As far
as I know, DFXP does not allow to on-the-fly creation of new regions,
does it? If not, then the current dynamicFlow isn't really suited
for live captioning or subtitling, and this is something that I'd
like to improve, it if is possible within the bounds of the charter.

Related Actions Items:
Related emails:
  1. [minutes] Timed Text Working Group Teleconference 20090220 (from plh@w3.org on 2009-02-20)
  2. RE: ISSUE-1 (dynamicFlow): dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions (from gadams@xfsi.com on 2008-09-19)
  3. RE: ISSUE-1 (dynamicFlow): dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions (from john.birch@screen.subtitling.com on 2008-09-19)
  4. ISSUE-1 (dynamicFlow): dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions (from sysbot+tracker@w3.org on 2008-09-19)

Related notes:

http://lists.w3.org/Archives/Public/public-tt/2008Dec/0137.html

Philippe Le Hégaret, 12 Dec 2008, 16:36:46

proposal to replace dynamicFlow
http://lists.w3.org/Archives/Public/public-tt/2009Jan/0030.html

Philippe Le Hégaret, 28 Jan 2009, 19:34:18

Changelog:

Created issue 'dynamicFlow in DFXP cannot emulate an important feature of EIA-608 captions' nickname dynamicFlow owned by Geoff Freed on product , description 'One of my concerns about the current dynamicFlow in DFXP is that it
cannot emulate an important feature of EIA-608 captions, which is the
ability to create and change regions on the fly. Currently,
dynamicFlow can feed text into pre-created regions in pre-specified
locations. In a real-time-captioning situaton, region locations may
not be known ahead of time, and during a broadcast blocks of caption
text sometimes have to be moved from, say, the lower-third of the
picture to the upper-third to avoid covering important graphics, or
sometimes they are just moved up (or down) one or two rows. As far
as I know, DFXP does not allow to on-the-fly creation of new regions,
does it? If not, then the current dynamicFlow isn't really suited
for live captioning or subtitling, and this is something that I'd
like to improve, it if is possible within the bounds of the charter.

' non-public

Philippe Le Hégaret, 19 Sep 2008, 13:42:46

Product changed to DFXP 1.0

Philippe Le Hégaret, 5 Dec 2008, 18:07:01

Status changed to 'closed'

Philippe Le Hégaret, 20 Feb 2009, 16:26:25


David Singer <singer@apple.com>, Nigel Megitt <nigel.megitt@bbc.co.uk>, Chairs, Thierry Michel <tmichel@w3.org>, Philippe Le Hégaret <plh@w3.org>, Staff Contacts
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