Here's a fast, cheap option to mount your camera onto your AnyCopter. This setup is designed to isolate vibrations of your multi-roto in your on-board camera footage.
Using some scrap wood and some galvinized steel wire you can create this rig and install it quickly.
Measures of the components in Chad's design:
Galvanized Steel Wire: 15" inches
Wood (bass/balsa): 9-1/2" inches