Modul8

One of the most popular software for VJs

Modul8 is a MacOS X application designed for real time video mixing and compositing. It has been designed for VJs and live performers.

Features:
Real Time Video Mixer and a user interface for real time- Is thought for real time video.
Is based on a layer metaphor, each change can be seen immediately in the composition.

Each media is a layer that can be moved, resizaed an rotated.

Has 7 outputs plus one for the user interface, you can determine what region of the composition is sent to which projector or screen.

Is posible extend the system incorporating new modules, writing in Python script.
Is an accessible on-line library more of them free.
Modul8 is a proprietary software.