Combining MPEG Tools to Generate Video Summaries Adapted to the Terminal and Network

MPEG standards provide tools for a broad range of purposes, covering from coding to metadata description tools. In this paper, the combined use of tools from di erent MPEG standards is described in the context of a video summarization application. The main objective of the framework is the e cient generation of summaries, integrated with their adaptation to the user's terminal and network. The MPEG-4 Scalable Video Coding speci cation is used for fast adaptation and summary bitstream generation. MPEG-21 Digital Item Adaptation tools are used to describe metadata related to the user's terminal and network. MPEG-7 tools are used to describe the summary. Finally, the framework is compared with alternative approaches (variations and transcoding), in terms of e ciency, ratedistortion performance and other aspects.