https://joy.videvo.net/videvo_files/video/free/2016-04/large_watermarked/balls_1_preview.mp4 Chemical Reaction Hmm. What is this? Will make an interesting background. 1080pabstractbackgroundblurrybokehcirclescreative commonsflashinggraphicalmotion backgroundmotion graphicsparticlesspheresvisualisationVJ