No, this is for mixing LZX patchable video (aka “1V”, since signals are between 0 and 1 volts) signals.
Various LZX modules (Visual Cortex, Vidiot, Cadet III) can extract luma from composite video as a 1V patchable signal, but color information is lost. Visual Cortex can decode separate R, G, and B channels from a component (Y/Pb/Pr) input. TBC2 and Chromagnon (and other Automata modules) will be able to decode composite video.
Visual Cortex’s compositor section and Marble Index are capable of a variety of video mixing / compositing functionality with 1V video signals, with video-rate voltage control. As a matrix mixer this module is a bit more like Color Chords – it sums individual signals together, rather than crossfading or wiping between multiple full-color sources as you might do with a video mixer. Matrix mixers have some interesting applications in video and audio synthesis, especially in feedback patches.