gif: https://i.sstatic.net/frSde.jpg (excerpt from https://vimeo.com/101172118)
Wondering if this is possible in Blender. Is it masking and chromakeying? Not really sure what to call it: two moving images overlayed, the one on top essentially transparent but affecting the bottom video? Should i use a glass shader or is there a better way? (Hoping to not have to learn after effects)