As multimedia content has proliferated over the past several years, users have begun to expect that content be easily accessed according to their own preferences. One of the most effective ways to do this is through using the MPEG-7 and MPEG-21 standards, which can help address the issues associated with designing a video personalization and summarization system in heterogeneous usage environments. This three-tier architecture provides a standards-compliant infrastructure that, in conjunction with our tools, can help select, adapt, and deliver personalized video summaries to users. In extending our summarization research, we plan to explore semantic similarities across multiple simultaneous news media sources and to abstract summaries for different viewpoints. Doing so will allow us to track a semantic topic as it evolves into the future. As a result, we should be able to summarize news repositories into a smaller collection of topic threads.