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ISSUE-2069 (audibility): Consider treating audio separately to graphics [SVG Core 2.0]

From: SVG Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Wed, 24 Sep 2008 02:18:04 +0000 (GMT)
To: public-svg-wg@w3.org
Message-Id: <20080924021804.8495FC6DAE@barney.w3.org>


ISSUE-2069 (audibility): Consider treating audio separately to graphics [SVG Core 2.0]

http://www.w3.org/Graphics/SVG/WG/track/issues/2069

Raised by: Anthony Grasso
On product: SVG Core 2.0

This relates to the effect 'visibility' has on audio.

A change was made to SVG Tiny 1.2 (ACTION-2207) in relation to the email sent by Niklas [1] regarding the test media-audio-212-t.svg.

We should consider treating audio separately to graphical elements for future versions of SVG. I've thought of three possibilities to approach this issue.


1) Introduce an audibility property

audibility
 value: audible | silent | inherit
 initial: audible
 applies to: media elements

'audible' - The current graphics or media  element shall be audible. 
'silent' - The current graphics or media element shall be inaudible regardless of the value of 'audio-level'.



2) Introduce an audibility property similar to (1) but replaces the 'audio-level' property as well

audibility
 value: <number> | silent | inherit
 initial: 1.0
 applies to: media elements



3) Introduce a playability property that replaces the visibility property

playability
 value: visible-audible | visible-silent | hidden-audible | hidden-silent | inherit
 initial: all
 applies to: graphics and media elements

'visible-audible' - The current graphics or media element shall be visible and audible.
'visible-silent' - The current graphics or media element shall be visible only. If media or graphic contains audio, the audio component must be audible.
'hidden-audible' - The current graphics or media element shall be inivisble only. If the media or graphic contains audio, the audio component must be audible.
'hiddent-silent' - The current graphics or media element shall be both inivisble and inaudible.



[1] http://lists.w3.org/Archives/Public/public-svg-wg/2008JulSep/0326.html
Received on Wednesday, 24 September 2008 02:18:38 UTC

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