Video content models based on RDF Janne Saarela Email: jsaarela@w3.org W3C/Sophia-Antipolis The amount of digitalized video content on the Web is getting higher and higher and some precautions have to be taken that all this content is easily re-used. Search engines require elaborate classification for easy video retrieval and new application domains such as video summaries require semantic knowledge on the content to deliver good results. The Resource Description Framework (RDF) provides a simple data model which can accommodate rich semantic descriptions of segmented video content. The re-usability of video content can be taken down to individual shots where an RDF aware application can determine whether it contains meaningful information to be further processed. The ability to mix classification vocabularies within one XML based encoding allows video authors/3rd parties to deliver rich content descriptions with their own or community coordinated vocabularies thus increasing the re-usability of the video on the Web. Practical work with RDF and video shows it provides a solid basis for video content model standardization work as in Mpeg-7. Janne Saarela has been involved in building video summaries using content models at the Eurecom institute prior to joining the W3C team in Sophia-Antipolis. He is now working with RDF implementations within a European project framework.