Talk:Radical/@comment-25580039-20160614190114/@comment-27026552-20160615102858

A mask is what you use to insert a dancer to a background. Well, first the dancer is chroma-keyed from the green screen, then effects are added to it and then its mask gets created. In this routine, they did nothing from what I just wrote, they just put the dancer in front of a black screen, pur some cool laser machines around the dancer to make these laser-y effects and just recorded it, that is why the moves look so realistic and it doesn't have an outline.