W3C home > Mailing lists > Public > public-tt@w3.org > December 2008

RE: space

From: John Birch <john.birch@screen.subtitling.com>
Date: Tue, 2 Dec 2008 20:23:47 -0000
Message-ID: <4476B296B92A4741A49B0BD017590700AA7466@sss-uk-ex-02.screen.subtitling.local>
To: "Geoff Freed" <geoff_freed@wgbh.org>
Cc: <public-tt@w3.org>

Geoff, all...

I suspect that there will be some time to fill...as I'm proposing that
dynamic flow is dropped from the spec.
Everything I was ~promoting~ for dynamic fill can still be achieved by
'knife and fork' methods in DFXP...

What dynamic flow was intended as (at least for me :) was as a mechanism
to move some of the responsibility 
for dynamic display of text over a time period from the author... to the
display device. 
(Note there is precendence for this as some aspects of EIA608 and 708
closed captioning have a similar characteristic in that user settings
impact the display of the captions irrespective of the implied text
timing from the stream.)

A simplistic dynamic flow example would be some timed text that is
flowed onto a single line horizontal 'ticker' display.
Depending on the number of pixels in width (assuming font equivalence),
different numbers of characters would be simultaneously visible on
different width displays...I was envisaging a specification that
encouraged a smart 'dynamic flow'ing display to adjust text 'scroll'
speeds to ensure that all the text was presented within the time period
defined by the DFXP document instance. 

Still.. a moot point as I now feel certain that dynamic flow cannot be
done justice within the timeframes - certainly testing and
representative implementations would be extremely difficult to

Best regards

John Birch

John Birch | Screen Subtitling Systems Ltd | Strategic Partnerships Manager
Main Line : +44 (0)1473 831700 | Ext : 270 | Office :  
Mobile: +44 (0)7919 558380 | Fax: +44 (0)1473 830078
john.birch@screen.subtitling.com | www.screen.subtitling.com
The Old Rectory, Claydon Curch Lane, Claydon,Ipswich,IP6 0EQ,United Kingdom

See us at Broadcast Video Expo - February 17th - 19th 2009, Earls Court 2, London, Stand number K56

Before Printing, think about the environment

-----Original Message-----
From: public-tt-request@w3.org [mailto:public-tt-request@w3.org] On
Behalf Of Geoff Freed
Sent: 02 December 2008 14:53
To: public-tt@w3.org
Subject: xml:space

can we add a brief discussion of xml:space to the agenda this week?   
i'm confused about what's specified as default behavior in dfxp
space) versus what we talked about two weeks ago.


This message may contain confidential and/or privileged information. If you are not the intended recipient you must not use, copy, disclose or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation. Screen Subtitling Systems Ltd. Registered in England No. 2596832. Registered Office: The Old Rectory, Claydon Church Lane, Claydon, Ipswich, Suffolk, IP6 0EQ
Received on Tuesday, 2 December 2008 20:24:31 UTC

This archive was generated by hypermail 2.3.1 : Thursday, 5 October 2017 18:24:03 UTC