Open Source Video is a project of Constant, a Brussels based organisation for Arts and Media. This weblog is a collective testsite for producing and distributing open source video. Here we keep traces of experiments with software for sharing and editing video, and report on what we found to be effective hardware, good linux distributions and helpful configurations. Also: tips and hints on where to find manuals, practical info on using software etc. This blog contains posts on annotating, tracing, collectively editing and sharing video online.