Active reading and hypermedia usage are an integral part of scholar daily practices, but the full exploitation of their potentialities still lies far ahead. In the search for new methods and tools, we focus in this article on the use of audiovisual material in a scholar context. One of the results of active reading applied to audiovisual material can be hypervideos, that we define as views on audiovisual documents associated with an annotation structure. The notion of hypervideo is useful to analyse existing video-based hypermedia systems as well as building new systems. The Advene project proposes an implementation of hypervideos through a framework that allows experimentations of new visualisation and interaction modalities for enriched videos.