VFX Roto, VFX Compositing, and VFX Prep are all important aspects of the visual effects (VFX) process in film, television, and other media. Here is a brief overview of each:
VFX Roto: Rotoscoping is the process of manually tracing over footage frame by frame to create a matte or mask for compositing. It is used to separate foreground elements (such as actors or objects) from the background or to remove unwanted elements from a shot. Roto is often used in conjunction with chroma keying or green screen removal to refine the edges of the keyed-out elements.
VFX Compositing: Compositing is the process of combining multiple elements (such as live-action footage, 3D models, and visual effects) into a seamless final image. This involves matching the lighting, colors, and perspective of each element and blending them together using various techniques such as color grading, keying, and tracking.
VFX Prep: VFX Prep refers to the pre-production work that is done to prepare for the VFX process. This includes planning and designing the visual effects, creating pre-visualization (pre-vis) or storyboards to visualize the final shots, and preparing the live-action footage for post-production (such as shooting plates for compositing or creating motion capture data for animation).
All three of these processes are crucial for creating high-quality VFX in film, television, and other media. They require specialized skills and knowledge, as well as access to powerful software tools and hardware.