The video source could be from: a telecine, a video tape recorder (VTR), a motion picture film scanner, virtual telecine or a direct-to-disk recording (DDR) or the older system called a film chain.
The suite may have equipment to read, log and insert into the video Kodak's Keykode.
This would be to monitor and if needed sync up the program audio to the video source if the sound was not on the film.
A clapperboard slate is used at the start and sometime at the end of scene to mark particular takes recorded during a production.
Some color suites are at video post production facilities that rent them by the hour for the transfer of TV commercials, documentaries and movies.