- From: Antoine Quint <ml@graougraou.com>
- Date: Sat, 15 Nov 2003 16:51:41 +0100
- To: "Jim Ley" <jim@jibbering.com>
- Cc: www-svg@w3.org, Patrick Schmitz <cogit@ludicrum.org>
Hey Jim, On 15 nov. 03, at 16:03, Jim Ley wrote: > Volume, does a value of 1.0 equal the maximum volume available to the > device, or the current volume of the device - e.g. if the device is at > half > volume, will the values 0.5-1.0 all be the same, or be a range within > 0-0.5 > ? First off, as I am sure you would have noticed, the A/V examples are wrong with respect to the property name, which is in fact "audio-level". As for your question, I feel the draft is clear enough at the end of section 7.3: "If the element has an element volume of 0, then the output signal will be inaudible. If the element has an element volume of 1, then the output signal will be at the system volume level. Neither the audio-level property or the element volume override the system volume setting." So the range is always from 0 to 1, relative to both the parent "audio-level" properties (which work similarly to graphic opacity properties) and current system volume level. > Video element: what happens if you leave off the height/width > attributes? As far I understand, <video> is a "subclass" of <image>, and it should just not render. I expect the next draft will be more eloquent on that case, and read something like: "The width/height of the rectangular region into which the referenced document is placed. A negative value is an error (see Error processing). A value of zero disables rendering of the element. Animatable: yes." > Do we have any access to closed captioning or other accessibility > information related to the multimedia elements? The SVGVideoElement interface has a pointer to the SVGVideo interface, which inherits from the SVGVisualMedia interface, which itself inherits from the SVGMedia interface which has the getMetadata() method. This should give you access to any metadata linked to the image. If your closed-captioning is available as metadata you will have a chance to get to it, otherwise I'm afraid you won't, at least not for now. > Also can we start them from times other than the start? As I understand, like with any element, if the "begin" attribute has a negative value, the media will be started by the offset specified. This remains to be checked as I don't have an implementation on my machine that implements this (ASV6 seems not to). I copied Patrick Schmitz, he should know (I may very well be talking nonsense here)... Antoine -- Antoine Quint <aq@fuchsia-design.com> W3C SVG Working Group Invited Expert SVG Consulting, Teaching and Outsourcing Fuchsia Design <http://www.fuchsia-design.com/>
Received on Saturday, 15 November 2003 10:56:04 UTC