Leo from MediaWay writes:
I couldn't find an easy tutorial that explained how to remove a green screen in Blender, then export the footage, and re-import it into your Blender scene, so I made one! This is a step by step guide to this powerful technique, using only the bare minimum equipment to film and chroma key a greenscreen. It's a great way to add realism to your Blender renders! Hope you find it useful!