From: Larry Bouthillier <[EMAIL PROTECTED]>
Subject: Re: SMIL and JavaScript???
I have not found a way to trigger URL/Javascript events from the SMIL timeline.
You can use the 'rmmerge rmevents ...' synchronized multimedia technique for
this. It's a bit unwieldy to get the hang of, but it works.
Essentially, you merge a text-based events file that specifies timestamps and
URLs
right into your media file. This media file, when played, will cause
RealPlayer
to call the URLs specified in the browser or a particular browser frame. The
problem is that once merged, you cannot edit or change the events in the media
file. You have to go back to the original "unmerged" file and do it all over
again. You can easily get into some 'version-control' problems if you're not
careful.
Larry
RealForum wrote:
> From: Jeffrey Fitzgerald <[EMAIL PROTECTED]>
> Subject: Re: SMIL and JavaScript???
>
> Thanks for the great insight. Let me ask about the SMIL time line. Is is
> possible
> to trigger javascript functions at certain points during a presentation?
> This is exactly
> where I am stuck. All I am trying to do is set a powerpoint image in a
window
> and have the real video clip change the pix as the file is played.
>
> I am also trying to add a form drop down to select different starting
> points in the
> real video file. What is the best javascript function for this? (I am
> reading all the docs
> but on a real tight deadline. I appreciate all your help everyone!)...
>
> At 10:58 AM 8/5/99 -0700, RealForum wrote:
> >From: Nicholas Hart <[EMAIL PROTECTED]>
> >Subject: Re: SMIL and JavaScript???
> >
> >SMIL does not support javascript any more than HTML supports javascript.
> >SMIL is a file format. The RealPlayer does not support javascript, so it
> >is not possible using SMIL alone to change images on a mouse-over.
> >
> >It would be possible for you to write some datatype plugins that would
> >support swapping images when a region gets a mouse-over, but that is
> >probably beyond the scope of your project.
> >
> >The current version of SMIL does give you the ability to change images
> >according to a timeline-- just not via user input.
> >
> >You can embed SMIL in a web browser by embedding the RealPlayer ActiveX
> >control and Netscape plug-in in the web page. I suggest you read the docs
> >for more information on embedding the RealPlayer.
> >
> >Look at chapter eight of the content creation guide:
> >http://service.real.com/help/library/guides/production/realpgd.htm
--
Larry Bouthillier -- [EMAIL PROTECTED]
Head of Multimedia Production
Harvard Business School
(617)495-6393
