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 Berner Oberland Bahn/Schynige Platte Bahn im Sommer 2014, Drehstrom am Lötschberg, Historisches in Konolfingen, OeBB | Schweizer Bahnverkehr