Hey just down loaded Litchi and I keep getting this error: "video decoder encryption error"
The DJI GO app shows no faults.
I do have the latest firmware on the Mavic and the RC.
I also tried on 2 different devices: iPhone 6plus and iPhone 6s.
Power cycling the RC and the Mavic still no good.
I have not had this problem. Have you tried to uninstall the Litchi app, do a restart and reinstall Litchi and restart again. Sometimes that'll do the trick. Worth a try.