Naturpark Schönbuch - Der Südwesten von oben - YouTube

made with DJI Phantom 2 / Zenmuse H3-3D / Gopro Hero 3 Black

Did you record this footage with your drone always in sight? It looks like you did not. I wouldn't dare flying my drone not having sight on it. On the smartphone you can only see what is in front of the camera so when flying sideways or back, you cannot see an obstacle comming up.