W3C home > Mailing lists > Public > public-tt@w3.org > October 2012

RE: ISSUE-195: default fontSize conflcts with TTML [Simple Delivery Profile for Closed Captions]

From: Sean Hayes <Sean.Hayes@microsoft.com>
Date: Wed, 31 Oct 2012 17:44:41 +0000
To: Michael Dolan <mdolan@newtbt.com>, "public-tt@w3.org" <public-tt@w3.org>
Message-ID: <E9A92BD0A4FC934EB7935470A46D1524166C949F@DB3EX14MBXC325.europe.corp.microsoft.com>
I think once we put in a determination of what the initial root container is (and how it accommodates the safe area or not), the font height calculation for 195 can become an explanatory note based on the cell grid.

-----Original Message-----
From: Michael Dolan [mailto:mdolan@newtbt.com] 
Sent: 31 October 2012 10:06
To: public-tt@w3.org
Subject: RE: ISSUE-195: default fontSize conflcts with TTML [Simple Delivery Profile for Closed Captions]

It's not just "industry". It's explicit in TTML for the initial cellResolution.  I recommend you remove the SDP-US language entirely and just defer to TTML.  As drafted now, it both conflicts with TTML and also what's needed for 608/708.

195 is relatively straight-forward and just about the initial cell height.  192 was about the cell width that is a moderately more difficult problem to address.  Further, based on additional recent posts, it seems to me that it is one of a number of changes needed to achieve EBU-TT compatibility. I don't know what changes might be needed to address 192.

Regards,

	Mike

-----Original Message-----
From: Monica Martin (MS OPEN TECH) [mailto:momartin@microsoft.com] 
Sent: Wednesday, October 31, 2012 9:34 AM
To: 'public-tt@w3.org'; Michael A Dolan (mdolan@newtbt.com); Sean Hayes
Subject: RE: ISSUE-195: default fontSize conflcts with TTML [Simple Delivery Profile for Closed Captions]

If the industry typically uses 6.67%, suggest we say that explicitly in R0026.

Didn't we actually touch on this in resolving Issue-192 Mike? 

Monica

-----Original Message-----
From: Timed Text Working Group Issue Tracker [mailto:sysbot+tracker@w3.org] 
Sent: Thursday, October 25, 2012 8:49 AM
To: public-tt@w3.org
Subject: ISSUE-195: default fontSize conflcts with TTML [Simple Delivery Profile for Closed Captions]

ISSUE-195: default fontSize conflcts with TTML [Simple Delivery Profile for Closed Captions]

http://www.w3.org/AudioVideo/TT/tracker/issues/195


Raised by: Mike Dolan
On product: Simple Delivery Profile for Closed Captions

SDP-US says: "R0026 - The default font height of the presentation processor must be 5% of the root container height." This is in conflict with the TTML initial value of a 15-line grid (6.67%). Further, since anamorphic values are not supported, then this is also necessarily the font with. I suggest that this be removed, deferring to the TTML initial values designed to be compatible with 708.








Received on Wednesday, 31 October 2012 18:02:15 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:06:05 UTC