System for transmitting commands and a video stream between a remote controlled machine such as a drone and a ground station

A system for transmitting commands and a video stream between a remote-controlled drone and a ground station, the system comprising a bidirectional link between craft and ground station, at least partly implementing a commercial cellular communication network, said bidirectional link being ensured by means of a cellular modem on the craft side and conveying, on the one hand, a compressed video stream generated by a camera and a video encoding module, and, on the other hand, information belonging to a group comprising movement control commands and flight data or piloting characteristics of the remote-controlled drone, the system further comprising a network management module for managing the bidirectional link capable of (i) ensuring that said link is maintained while taking account of the variability of topology and of performance levels of the link induced by the implementation of the cellular communication network and (ii) performing an adaptation of the bit rate of the compressed video stream by reserving an incompressible portion of the bandwidth available for the routing of critical information.