Live Video
Currently the drone takes still photos and stores them. The readout is done after landing. There is some interest in a live video connection.
Dominik Beisch, Jonas Rückel and Leo Hilliger have done some research regarding the range for classic analog first person view cameras with different antennas and transmit power variations in the 5 GHz band:
The effect of antenna gain and transmit power can be viewed in this video: