Recently I had two matched projectors for a couple of hours, so I decided to try and achieve a seamless scrolling effect with live camera sources.

Through luck rather than planning, all of my video cameras are from Sony, and they all have the same type of cable for composite analog-out. Looking for better quality, I picked up half a dozen of these replacement cables, which have both S-Video and Composite jacks. This allows me to send a single camera output to 2 separate layers, setting the stage for some multi-screen spanning.

The Setup

Put the VJX into Battle Mode (Menu > Video > Mixmode > Battle 2*2)
Set Outputs for separate projectors (Menu > Video > Outputs > Choose “Master 1″ for first projector, “Master 2″ for second)

Plug one output from each camera into each side of the mixer:
Camera 1:
Composite Output - Track 1, Input 1
S-Video Output - Track 3, Input 3
Camera 2:
Composite Output - Track 2, Input 1
S-Video Output - Track 4, Input 3
… and then hold down the “Input” button and select these inputs.
For each track in turn:
Enable Background Alpha
Enable Scroll FX

Midi Control

The VJX has a complete midi map, covering almost every function available (apart from saving and loading of presets). The VJX has a pretty intuitive control setup for the huge amount of options available, but it would be physically impossible to control independent parameters for 4 tracks concurrently, which is where external midi enters the picture.