An XMT Authoring System Supporting Various Presentation Environments

摘要

MPEG-4 is a multimedia specification that can represent scenes composed of multimedia objects by unit of content. The MPEG-4 system requires the MPEG-4 scene information to be stored in the BIFS binary format. It also defines the XMT text syntax to facilitate easy authoring, distributing, and altering. Since XMT(eXtensible MPEG-4 Textual format) is constructed in XML format, it is easy to analyze the information on scene composition. Using XSLT, it is also possible to convert it into a different multimedia language, such as VRML/X3D of the Web3D consortium and SMIL of the W3C consortium. This paper presents an XMT authoring tool that generates the scene information in XMT, converts the XMT into other multimedia languages such as BIFS of MPEG-4 or SMIL, and supports various multimedia-playing environments.