Videostrates: Collaborative, Distributed and Programmable Video Manipulation

We present Videostrates, a concept and prototype system that enables real-time collaborative editing of both recorded material and live video streams. Videostrates supports live and recorded video composition with a declarative HTML-based notation, as well as creating both simple and sophisticated editing tools that can be combined and used collaboratively. Videostrates is programmable and unleashes the power of the modern web platform for video manipulation. We demonstrate its potential through three use scenarios: collaborative video editing with multiple tools and devices; orchestration of multiple live streams that are recorded and broadcast to a popular streaming platform; and programmatic creation of video using WebGL and shaders for blue screen effects. These scenarios only scratch the surface of the potential of Videostrates, which generates a new interaction paradigm for collaborative video manipulation with a fully programmable interface.