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

From: Michael Dolan <mdolan@newtbt.com>
Date: Wed, 31 Oct 2012 10:05:44 -0700
To: <public-tt@w3.org>
Message-ID: <026d01cdb789$faaf08b0$f00d1a10$@newtbt.com>
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 17:06:28 UTC

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