In visual effects (VFX), green screens are used to digitally replace the background in post-production, allowing actors to appear in different environments without physically being there.
Visual Effects (VFX) combine live-action footage with computer-generated imagery to create environments, creatures, and effects that would be dangerous, costly, or impossible to capture on film. Techniques like green screen compositing, motion tracking, and 3D rendering allow filmmakers to seamlessly blend the real and the imaginary, shaping the look and feel of modern cinema.