VFX are critical processes aimed at refining footage by removing any unwanted elements such as wires, rigs, and reflections, as well as fixing any inconsistencies or errors. This involves using advanced digital tools to carefully paint over or reconstruct parts of the scene to match the original textures and colors seamlessly. By meticulously addressing these details, artists ensure that the final visual product is clean, cohesive, and free from distractions, thereby maintaining the viewer's immersion and enhancing the overall quality of the production.