Smooth Switching to my iSight?

First day with QC and it's already 4:40am!

I am trying to make something that triggers video clips and switches to my isight triggered by midi. The problem I have is that when the midi note enables the isight to capture it takes a second for the camera to turn on.

Can anyone point me in a direction of where to learn about keeping the isight camera always on/capturing and then only displaying it on screen when it's triggered via midi.

right now I have a simple midi note to billboard enable to turn on...with the video input sending to the billboard image.

Thanks Josh