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 Reaction of Iron Nails with Copper Sulphate Solution in Water - MeitY OLabs, Laws of Reflection of Sound - MeitY OLabs, Viscosity of a Liquid - MeitY OLabs