In this paper, we describe an approach to audiovisual data modeling for multimedia integration and synchronization. The approach chosen consists in using description tools from Multimedia Description Schemes of standard MPEG-7 to describe audiovisual contents and in integrating these description models into a multimedia integration and synchronization model close to SMIL. The resulting model provides relevant specification tools for the fine integration of multimedia fragments into multimedia presentations. An authoring environment illustrates the authoring features that can be obtained thanks to these integrated models.

Abstract. This paper contributes to the modeling of audiovisual information with a particular focus on the description needs for the composition of video elements (character, shot, scene, etc.) with other media information (text, sound, image, etc) inside multimedia document. This model has been experimented through an authoring and presentation tool called VideoMadeus. The resultants are illustrated with several examples of document where spatio-temporal synchronization of video is required.

Abstract. In this paper, we i n tegrate some results on automatic structuration of video in a multimedia authoring system. For that purpose, we identify the speci c video structuration requirements of this kind of application and we propose an XML syntax for the description of the structure, the temporal and spatial organization of video. Finally we d escribe a prototype application that takes advantage of this structured video format.

(character, shot, scene, etc.) with other media objects (text, sound, image, etc). Such a composition allows to easily realize attractive multimedia presentations where media stuffs can be synchronized in rich and various ways (spatio-temporal synchronization, temporal links, etc.).