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ISSUE-122: consistency of ratio/resolution/origin/extent syntax [DFXP 1.0]

From: Timed Text Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Tue, 9 Jun 2009 06:58:09 +0000 (GMT)
To: public-tt@w3.org
Message-Id: <20090609065809.C97C86B646@tibor.w3.org>

ISSUE-122: consistency of ratio/resolution/origin/extent syntax [DFXP 1.0]


Raised by: Glenn Adams
On product: DFXP 1.0

at present, ttp:cellResolution, ttp:frameRateMultiplier, ttp:pixelAspectRatio, tts:origin, and tts:extent express a ratio, a point (two coordinates), or a rectilinear area (two lengths) using varying syntax as follows:

ttp:cellResolution           : columns rows
ttp:frameRateMultiplier : numerator ( ':' denominator )?
ttp:pixelAspecRatio        : width ':' height
tts:origin                          : <length> <length>
tts:extent                         : <length> <length>

i propose that the syntax of these be more unified, and, in particular, that the ':' separator used in ttp:frameRateMultiplier and ttp:pixelAspectRatio be eliminated (using whitespace instead), and that the denominator be required on frameRateMultiplier;

with this minor change, all of these expressions will consist of two required terms separated by a whitespace separator
Received on Tuesday, 9 June 2009 06:58:16 UTC

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