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Re: [SVG 1.2] 7 multimedia

From: Sigurd Lerstad <sigler@bredband.no>
Date: Sat, 15 Nov 2003 17:29:57 +0100
Message-ID: <018b01c3ab95$b57c60d0$6e1273d5@mmstudio>
To: "Antoine Quint" <ml@graougraou.com>
Cc: "Jim Ley" <jim@jibbering.com>, <www-svg@w3.org>, "Patrick Schmitz" <cogit@ludicrum.org>

Hi Antoin

> Hi Sigur(d), :)
>
> >> 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)...
> >
> > What about the clipBegin attribute from SMIL
>
> It is not supported in SVG as far as I know. SVG is just a host
> language for SMIL Animation and does not have the same feature.
> Likewise, the newly-introduced <audio> and <video> elements are SVG
> elements, not SMIL.

I thought we were discussing features of the not yet finalized SVG 1.2, I
suggest adding clipBegin to video and audio elements. My viewer already
supports that attribute.

> > Using a negative begin would require you wrap the media element in
> > another
> > time container, and set the begin value of when you really want to
> > start the
> > media on the time container instead of on the media element itself.
>
> In SVG, there is no need to wrap in another time container, offset
> times are relative to document begin. See SVG 1.1 spec [0]:

Again, I thought we were discussing SVG 1.2, which introduce <par> and <seq>

> "For SMIL Animation, this describes the element begin as an offset from
> an implicit syncbase. For SVG, the implicit syncbase begin is defined
> to be relative to the document begin. Negative begin times are entirely
> valid and easy to compute, as long as there is a resolved document
> begin time."


--
Sigurd Lerstad
Received on Saturday, 15 November 2003 11:28:52 GMT

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