Hi Guys. I am a photographer/videographer in the UK and new to drone flying, going through my training for CAA licence with Drone Pilot Academy. I have no problems with the DJI Phantom 3 Professional - its excellent. My issue is; yesterday I took some video which was recording as it should but could not use play back, screen was black. I continued filming and when I down loaded to iMac only the most recent footage was recorded. I done the same today with the same result, it seems the video is over writing the previous work. CAN ANYONE HELP PLEASE. Cheers Joe, Cumbria UK.