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 Rawlings VELO Ash Wood Bat: KEMP Gamer Adult, Marucci Chase Utley Maple Wood Bat: CU26B Adult, DeMarini Composite Wood Bat: DXCDA Adult