This text questions, in a transversal way, several of my video art productions, made between 2005 and today. Through five analytical notes, I will question certain relationships between the notions of composite space and gestural automation. We will analyze the way in which the video post-production activity, more particularly that which we commonly call compositing, makes it possible to reinvest some classic articulations between background (or contextual background) and form, through the articulation between action place and characters.