Wechselspieler is a tool for mapping motion data from a video stream onto sound events in the MIDI and OSC protocols. It features a GUI for easy selection of trigger regions in a video stream and mapping these to individual sound events. It supports various video input sources, such as Video4Linux devices, movie files, and FireWire cameras. As output, it supports ALSA based MIDI devices and the UDP based OSC (OpenSoundControl) protocol for integration with MIDI hard/software and OSC-capable software like PD, SuperCollider, and Max/MSP.
Scenic is a free software suite for streaming audio, video, and MIDI between live events. It was created at the Society for Arts and Technology (SAT) to give artists a powerful tool for telepresence in live arts contexts, and new media installations. The streaming is done over RTP with the GStreamer multimedia framework. Users can also choose low-bandwidth or high-quality codecs, depending on what is available on their system. It offers up to as many audio channels as your audio device supports. It consists of a desktop application and several command-line utilities: scenic (a Desktop application to stream audio, video, and MIDI over RTP); milhouse (streams audio and video over RTP); midistream (streams MIDI notes and controls over RTP); dc-ctl (controls connected DC IEEE 1394 cameras); firereset (resets an IEEE 1394 bus to help in case of problems); and jack-info (prints information about running JACK servers).