I am the video programmer for Big Art Group’s production of SOS. We began working early last spring of 2008 through Isadora to create a patch that could cue 8 cameras and 8 projectors. In addition to the live feeds, we also used green screens, chroma keying small video files (looped) from 4 Mac minis. Totalling 8 live cameras, 8 projectors, 3 green screens, 4 Mac minis plus 1 Powerbook Pro (as master board), and 3 A/V switchers to allow for chroma keying.  All of this was patched through a 16x16 Matrix swticher, to allow for switching between different combinations of video feeds to the projectors. We communicated between computers through an Ethernet hub that conversed with Isadora on all desktops. 
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