import processing.video.*;

Capture video;
int framecount = 0;

void setup() {
  printArray(Capture.list());
  size(1280,720);
  video = new Capture(this, 1280,720);
  video.start();
}

void captureEvent(Capture video) {
  video.read();
}
void mousePressed() {
  saveFrame("cap-####.png");
}

void draw() {
   copy(video, video.width - (framecount % video.width), 0, 1, video.height, framecount % width, 0, 1, video.height);
   framecount += 1;
}