Fly_Tello.ipynb Commands are executed one by another, i.e., the former one will block the latter one. A command will be retried several time if it fails. Drone state and command history are stored. A sample Tello_flight_log_20201018_052457.db is provided. Tello_Video.ipynb streams the video in a web browser. It ONLY depends on opencv-python !!! Use Flask to do web broadcasting. h264decoder is required by dji-sdk/Tello-Python but it sucks. I tried the installation without success. I came up a bizarre solution so opencv can decode the stream. Video frame is in jpeg format (yeah, computer vision).