This short video represents my best effort at capturing HD quality video with a 350QX Quad Copter, GoPro Hero 3 and a brushless gimbal mount designed for the DJI Phantom.
Overall I am pleased except for the Yaw (pan). Having no room for a third axis, this mount stabilizes in roll and tilt only. Pan is accomplished by yawing the quad. The yaw is ratchety except in perfectly calm conditions. If you combine pan with slow forward flight you get absolutely smooth video. However, try to pan over one spot and you get ratchety video.