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[Bug 12813] New: [WebVTT] explain cue settings semantics

From: <bugzilla@jessica.w3.org>
Date: Mon, 30 May 2011 01:24:34 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-12813-2486@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12813

           Summary: [WebVTT] explain cue settings semantics
           Product: HTML WG
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: other Hixie drafts (editor: Ian Hickson)
        AssignedTo: ian@hixie.ch
        ReportedBy: silviapfeiffer1@gmail.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org


The meaning of the cue settings is not explicitly spelled out - people have to
infer it from the way in which they get used once mapped into HTML through
<track> rather than being able to understand from reading the WebVTT spec.

It would be nice to have an explanation where cue settings are first mentioned,
near
http://www.whatwg.org/specs/web-apps/current-work/webvtt.html#webvtt-cue-settings
.

Something like:

A WebVTT vertical text cue setting:
  The vertical text cue setting defines whether text inside the text rendering
box is rendered horizonally or vertically and whether it is ltr or rtl within
the text rendering box.

A WebVTT line position cue setting:
  The line position cue setting defines whether the text rendering box is
positioned at the bottom of the video viewport or moved up from there by a
viewport height percentage or number of lines.

A WebVTT text position cue setting:
  The text position cue setting defines whether the text rendering box is
positioned at the left of the video viewport or moved across from there by a
viewport width percentage or number of pixels.

A WebVTT size cue setting:
  The size cue setting defines the text size of text inside the text rendering
box either in percent or pixels.

A WebVTT alignment cue setting:
  The alignment cue setting defines whether the text inside the text rendering
box is aligned to the box's start/middle/end, where start/middle/end is also
influenced by the vertical cue setting, i.e. meaning top and bottom for
vertically rendered text.

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Received on Monday, 30 May 2011 01:24:36 UTC

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