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Re: Fw: Absolute timing in SMIL

From: Kari Pihkala <kpihkala@cc.hut.fi>
Date: Tue, 26 Jun 2001 13:25:51 +0300 (EET DST)
To: raresh@raftelecom.net
cc: www-smil@w3.org
Message-ID: <Pine.OSF.4.10.10106261313480.11742-100000@alpha.hut.fi>

Hi,

in SMIL2.0 you can use wallclock-sync:
http://www.w3.org/TR/smil20/smil-timing.html#Timing-WallclockSyncValueSyntax

here is an example, which will show an image on 
June 26th 2001, at 13:15:52 UTC.

<body begin="wallclock( 2001-06-26T13:15:32.0Z )">
	<img src="test.gif">
</body>

I think you have to be careful with the wallclock-sync values.
The parent time containers (par/seq...) will restrict it,
as in the following example:

<seq begin="2s" end="4s">
	<img begin="wallclock( 2001-06-26T13:15:32.0Z )">
</seq>

I don't think the example will work, because the end time for the seq
element will cut off the image (unless the presentation is played so
that the wallclock time is within the seq begin and end times)..

 - Kari Pihkala

> forwarded to mailing list www-smil@w3.org
> 
> ----- Original Message ----- 
> From: "Rares Tohanean" <raresh@raftelecom.net>
> Sent: Friday, June 22, 2001 10:46 AM
> Subject: Absolute timing in SMIL
> 
> 
> > Hi! I'm a programmer at RAFT Telecom in Romania.
> > I made a SMIL player for ANY multimedia resources (including web pages,
> > Macromedia, DOC (Word) files etc.
> > I encounter problems now because sometimes, I need to specify an absolute
> > timing in my SMIL but the specifications of SMIL doesn't seam to permit
> > that. What should I do? I want to keep my player compatible with SMIL 2.0
> > but in the same time I need to specify absolute timing like
> > <start_at day="22" month="6" hour="11" minutes="43">
> > 
> > <seq >
> > 
> >     <img...>
> > 
> >     ...
> > 
> > <seq>
> > 
> > </start_at>
> > 
> > 
> > 
> > 
> > 
> > 
> 
Received on Tuesday, 26 June 2001 06:26:17 UTC

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