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 First Looks: The Nikon Df - Retro Styled Full Frame Camera, Samsung Galaxy S5 - Camera Test, MWC 2014: An Interview with Jolla COO & Co-Founder Marc Dillon