For thirty years, green screens have been a 'necessary evil' for filmmakers, often requiring hours of manual rotoscoping to fix messy edges. Niko Pueringer has finally cracked the code by building an open-source tool that uses neural networks and synthetic 3D data to achieve perfect transparency. The secret involves a radical training method that forces the AI to unmix background colors from fine details like hair and glass, though it comes with a massive 24GB VRAM hardware requirement.