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Re: SMIL in SMIL?

From: Joseph Brick <josephb@real.com>
Date: Thu, 08 Oct 1998 12:55:04 -0700
Message-Id: <199810081956.MAA24808@prognet.com>
To: Philipp Hoschka <Philipp.Hoschka@sophia.inria.fr>
Cc: www-smil@w3.org
>>  Can a SMIL presentation include other SMIL presentation?
>
>Nothing in the SMIL spec prevents this

True that nothing in the SMIL spec prevents this, but we can't pretend that
there aren't special issues with a SMIL media source that don't exist with,
say, a video media source. Off the top of my head: 

* SMIL files contain a layout element. If I have two SMIL sources within
the same <par>, each defining completely different layout, what should
happen? 

* Can a <ref> in a nested SMIL file refer to a region defined by its parent
file?

There are certainly solutions for these (e.g., perhaps <head> is ignored in
nested files), but they're not specified. Leaving these decisions up to
each implementation is asking for trouble.

-jeb

At 02:37 PM 10/5/98 +0200, you wrote:
>
>On 05/10/1998, SHIBATA Seiki <seiki@flab.fujitsu.co.jp>  wrote:
>>Hi,
>>
>>I have a question.
>>
>>  Can a SMIL presentation include other SMIL presentation?
>
>Nothing in the SMIL spec prevents this
>
>>It seems possible, if referrences to SMIL document are supported in
>>`Media Object Element'. But two SMIL players (GRiNS and RealPlayer G2)
>>do not support SMIL document as a media type.
>
>I too think that it is a very useful thing to have, and am
>disappointed that nobody seems to support it.
>
>For an author, splitting a SMIL presentation into several different
>SMIL parts allows modularizing the presentation, reuse
>chunks of it in another context and make the whole thing more
>readable.
>
>-Philipp Hoschka, W3C
> 
Received on Thursday, 8 October 1998 15:56:26 GMT

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