The Voctomix Project by the C3Voc (the Chaos Communication Congress' Video Operation Crew) is their software implementation of a Live-Video-Mixer.

It is written in Python using GStreamer and consists of three parts: - Voctocore, the videomixer core-process that does the actual video- and audio crunching. - Voctogui, a GUI implementation in GTK+ controlling the core's functionality and giving visual feedback of the mixed video. - Voctomix Example Scripts, a collection of tools and examples for talking to the core-process, feeding and receiving video-streams and controlling operations from scripts or command-line.

This package depends on all the components and also contains the documentation and example scripts.