The Video Scope has two knobs. One knob controls the input gain, and the other knob selects the display mode. There are now 4 modes: line, color shifter, trapezoid, and randomizer. The randomizer function randomly selects one of the other 3 modes at an adjustable rate. This is useful for hands free operation, and keeps the display always changing.
The video to the left demonstrates some of the possible patterns (this is an older video, so only the first two modes are being used). The sound in the video is the same sound that is feeding into the device to generate the patterns. Since it responds to an audio signal -- the sky is the limit with the different kinds of patterns you can get.
Hands-on by GEDDEM