videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including RC Dragonfly Robot Flapping Wings Insect Ornithopter, Remote Control Dragonfly Insect Ornithopter, 3.5 ch rc helicopter SKYLARK with GYRO indoor flight good 3D