Exquisite Motion Corpse is a 4-channel video installation that uses an iPad as a controller.
Behind the scenes, a Mac Pro runs real-time video mixing software Resolume 4 Avenue. This software, originally designed for VJs to mix video on fly, is the backbone of the the installation. It controls the timing and playback speed of the video clips and does all the heavy lifting through its rapid GPU video processing.
Since the software is too complex for direct user interaction, an iPad acts as a touch interface to control the desired elements. The iPad is running TouchOSC, a customizable application designed to send wireless OSC messages to a computer on the same network. These OSC messages trigger clips and tempo functions in Resolume. This seamless communication renders the user unaware of the complexities of Resolume and displays only the functions and features needed to control the installation.
The video clips triggered on the Mac Pro are split into 4 different VGA output connected to one of the four vertically-stacked monitors. Although Resolume was not designed for use in this way, the stability and engineering of the software is perfect for this type of setup. Instead of having to program a unique video application using Max/MSP and jitter, we were able to use audio/video playback functions in Resolume to do everything we needed. During the Ann Arbor Film Festival this installation ran 10-13 hours a day without crashing. We clocked over 21,000 measures at about 108bpm on average.
To see the installation in action check out this video: