[Bug 9697] New: media elements in SVG need ability to associate captions and description

http://www.w3.org/Bugs/Public/show_bug.cgi?id=9697

           Summary: media elements in SVG need ability to associate
                    captions and description
           Product: SVG
           Version: SVG 1.2 Tiny
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: a11y, media
          Severity: major
          Priority: P1
         Component: Accessibility Support
        AssignedTo: schepers@w3.org
        ReportedBy: vibrania@hotmail.com
         QAContact: www-svg@w3.org


The <audio> and <video> elements in SVG need to have a peer element to contain
timed text to support captions, subtitles and the text of descriptions. While
an approximation to captions can be done using <animation>, this is not a good
substitute to using a dedicated timed text format and there are no controls for
the user to find them.

Proposal (1)
Allow <foreignObject> to have the Attributes for runtime synchronization so
that for example an external TTML file may be referenced, or an embedded TTML
resource.

Proposal (2) 
Add an explicit <timedText> element equivalent to <video> to provide such
references.

Proposal (3)
Add system properties for captions, descriptions and subtitles in order to
control the rendering of these formats.

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Received on Monday, 10 May 2010 13:09:48 UTC