![](bg4.png)
reference toward a segment of presentation while
using the attribute “id” to identify the segment, and
the attribute “href” for referencing the segment.
SMIL permits in addition to refer to a temporal
part of the presentation, this part can be either a
simple media element (audio, video, text), or
composite (element “par” or “seq”), by associating it
to a unique identifier.
SMIL permits to reference the multimedia
content in an efficient manner, by permitting to
segment a media in several portions and associating
a description to each of them. However, the list of
attributes of the “meta” element stills open, therefore
this information cannot be exploited efficiently by
any search engine. The ideal would be to be able to
describe these informations in a standard manner
independently of the application domain.
We opted for a hybrid approach based on the use
of the attributes defined by the Dublin Core
Metadata Initiative (or rather one subset of these
attributes), in order to describe the Meta data in a
SMIL 2.0 document. The Dublin core is a set of
Meta data attributes defined in order to permits the
exchange of Meta data and the interoperability
between several domains of application.
The interface generator translates the
informations given by the author to Meta data, and
inserts them in the SMIL document thanks to the use
of the module of Meta data of SMIL 2.0. We defined
a model of Meta data containing a subset of the
elements of Dublin core.
Every Meta data will be translated to a meta
element, where the name of the property is an
element of the Dublin Core, preceded by "DC: " in
order to signal that it is about an element of the
Dublin Core (Powell, 2001).
The SMIL language being drifted from XML, the
integration of the elements of the Dublin Core
passes by the integration of the corresponding name
space.
The elements of the Dublin Core permit to define
the Metas data associated to any domain of
application. These elements are both comprehensible
by the machines and by the users. However, in order
to assure a maximal compatibility, the Dublin Core
should integrate sets of predefined values associated
to every element. Some research are in progress at
the level of the DC (Hillmann, 2003) in order to
solve this problem.
4 CONCLUSION
The originality of our solution resides in its
simplicity of use. Indeed, thanks to a good
organization and a suitable layout, the user's
attention is carried quickly on the picture
representing the video; thereafter, the reading of
some lines of the associated text can help him to
decide, while giving him a global view of the
content. The use of this interface is intuitive, and
doesn't require any particular knowledge. Besides,
the proposed solution contains an automatic
mechanism permitting the generation and the
automatic update of the interface paper to a software
tool: the interface generator.
We also proposed a new approach of description of
the multimedia resources, based on the use of the
elements of the Dublin Core jointly to the SMIL
language. This solution, applied to the interface
paper, permits the indexing of the presentations and
their reference by the search engines, notably on the
Web.
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