Advene is a video annotation platform (free software) that aims at accompanying scholars in their audiovisual analyses workflow. It promotes flexible and evolving annotation structures and interfaces in order to deal with the inherent dynamic nature of analysis. In this presentation, I will present the platform itself, and illustrate its usage through existing Digital Humanities projects that use it, from structuring videos for interview analyses to implementing a workflow for semantic annotation of movies. The Advene project (Annotate Digital Video, Exchange on the NEt) aims at providing a model and a format to share annotations about digital video documents (movies, courses, conferences...), as well as tools to edit and visualize the hypervideos generated from both the annotations and the audiovisual documents. With the Advene software, teachers, moviegoers, etc. can exchange multimedia comments and analyses about video documents. The project also aims at studying the way that communities of users (teachers, moviegoers, students...) will use these self-publishing tools to share their audiovisual "readings", and to envision new editing and viewing interfaces for interactive comment and analysis of audiovisual content. Advene is a GPL desktop application, based on Python3/Gtk/Gstreamer.