How FreeJ does itįreeJ is a commandline application on GNU/Linux, a graphical application on Apple/OSX, a C++ library offering an API for a multimedia framework that relies on different native functions on the operating systems it is ported and, at last, bindings to languages like Python and Ruby (using Swig, more can be implemented as needed. We control the video mixer locally or remotely, also from multiple places at the same time all functionalities are designed ad-hoc using javascript. We show the resulting video mix on multiple and remote screens, encode it into a movie and stream it live to the internet.
We want to write scripts to control video mixes with keyboards, midi signals, OSC messages, wiimotes, video mouse and joysticks manipulating images, movies, live cameras, particle generators, text scrollers, flash animations and more. We need to interact with multiple layers of video, filtered by effect chains and then mixed together. FreeJ is a video mixer: an instrument for realtime video manipulation used in the fields of dance theater, veejaying, medical visualization and TV. Its development started in 2001 and continued actively for many years.
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