Filmografo literally translates to "filmmaker" or "filmographer". It's a unique and evocative word that immediately sets a cinematic tone for the song.
In the context of the lyrics, the artist uses this word to position himself as the director of his own life and relationships, suggesting a sense of control and narrative over his experiences. It's a powerful metaphor that makes the listener think about life as a movie being filmed.
Kid Yugi runs an entire breakup through a film projector. The relationship is a reel that can catch fire at any moment, and the person he is singing to is the one on screen: "Tu sei la star" ("You are the star"), while he files himself under something shorter-lived, "Baby, io sono vita" ("Baby, I am life"). What he keeps returning to is that neither of them is holding the camera. "L'occhio del regista è ineluttabile" ("The director's eye is inescapable"), and a line later he gives up on fighting it: "Neanche insieme lo possiamo battere" ("Even together we can't beat him"). The ending is already written and the film just has to reach it.
The love itself gets described in physics and weather rather than in feelings. He promises "Ci faremo entanglement anche ad un megaparsec" ("We will get entangled even at a megaparsec"), which is a very Kid Yugi way of saying distance is not the problem, and then undercuts it with "Sei bella se sei calda, ti amo pure quando grandini" ("You're beautiful when you're warm, I love you even when you hail"), where the hail is her turning cold on him. The bluntest line is the one he refuses to soften: "Una fenice brucia, un uomo non sa rinascere" ("A phoenix burns, a man cannot be reborn"). He ends on two short lines that quietly undo everything before them, "Non c'era niente di vero" ("There was nothing true") and then "Tu eri vero" ("You were real").