I have the
p4 and now the mavic and from the day i started using Litchi about a year ago it was like buying a new drone.. the things it can do are amazing!
I will quickly try and describe how i use it and you will see...
Using my mac at home i go to the litchi home page and they have a google earth like page which you can pre-plan flights and then save them online to access at any time from your mobile phone before flying.
Missions can be programmed at the exact flight path you want, the speed and hight you want, camera can focus to any point of interest you want and at any angle etc etc...
But the most important thing by far is that you do not need any connection to your remote controller once the mission is loaded to the drone!!! think about that for a minute .. this is amazing staff!
Of course it will return home either when the mission ends or if it calculates there is not enough battery juice to complete the mission then it will automatically return home!
The only thing to be very carefull is the hight which means fly it way above trees and hills and whatever else is bellow the flight path.. including the automatic return to home if it starts it will fly back through a direct line and not reverse mission.. which might be a problem if you fly around a hill.
Using litchi i have flown 22 mins aprox. missions of 14km distance (7 to go and 7 back) while having lost the connection to the drone the first few minutes due to tall trees right in front of me!
This is really amazing as the smooth action you get from litchi flying there is no way you can get it manually... the curve size for example on changing directions can be set so its a smooth change of direction and not right angles for example.
i have attached one of my videos so you get the picture of how smooth the video is with litchi: