ISSUE-122: consistency of ratio/resolution/origin/extent syntax

consistency of ratio/resolution/origin/extent syntax

State:

CLOSED

Product:

TTML 1.0

Raised by:

Glenn Adams

Opened on:

2009-06-09

Description:

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

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Related emails:

1. Meeting notes 03-07-09 (from Sean.Hayes@microsoft.com on 2009-07-03)
2. RE: ISSUE-122: consistency of ratio/resolution/origin/extent syntax [DFXP 1.0] (from Sean.Hayes@microsoft.com on 2009-06-09)
3. ISSUE-122: consistency of ratio/resolution/origin/extent syntax [DFXP 1.0] (from sysbot+tracker@w3.org on 2009-06-09)

Related notes:

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