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 Shonan Bicycle Festival 2013, Open Class Final Round, Shonan Bicycle Festival 2014 Open Class Finals (highlight), Shonan Bicycle Festival BMX Flatland Contest (23 Feb 2013)