Roto Artists trace areas within live-action frames where the CGI will be inserted or interact with live images. They create silhouettes known as roto mattes within the frame to allow the scene to be layered by the compositor.
Visual Effects Technical Directors (FX TD) work on set to ensure that elements such as explosions and action sequences work within the parameters of the visual effects required from the footage.
Compositors ensure that all the visual elements of a film are rendered seamlessly on the screen. They deal with a complex combination of images including green screen/chroma key sequences, special effects, visual effects, mattes and live action coming together to complete a believable whole.
Video game FX (effects) artists work in teams to create effects that enhance the sequences and actions of the animation within the game.
Film Visual Effects Artists create computer generated images (CGI) to add to live-action footage during the post production process.
