Apparatus for processing digital video signals; apparatus for processing video signals; apparatus for recording video; apparatus for reproducing video; apparatus for reproduction of video images; audio and video receivers; audio processing apparatus for use with video apparatus; closed circuit video apparatus for use in access control; closed circuit video installations; colour video processors; compact discs (audio-video); computer based apparatus for use in the enhancement of video signals; computer controlled installations of video display apparatus; control apparatus for video reproducing apparatus; digital interactive video adaptors for use with computers; digital video equipment for studio use; electronic apparatus for interfacing video apparatus; electronic digitizers for video picture analysis; electronic video multiplexer; large screen video projectors; music centres incorporating sound and video recording and reproducing apparatus; playback devices for video tapes; players for use with video cassettes; projection video apparatus; racks adapted to house video apparatus; recorders for use with video cassettes; recorders for use with video tapes; remote control apparatus for use with video cassette recorders; solid-state video recorders; sound mixing apparatus for use in video dubbing; television apparatus for video discs; television apparatus for video tapes; televisions incorporating video recorders; terminals (connectors) for video recorders; video acquisition transition apparatus; video amplifying apparatus; video apparatus; video apparatus for television studios; video cameras; video circuit boards; video communications apparatus; video compact discs; video conferencing apparatus; video coupling apparatus; video data converting apparatus; video devices; video digitisers; video digitizers; video display apparatus; video display instruments; video display screens; video display units; video door telephone apparatus; video enhancers; video equipped remote visual inspection apparatus; video local area network controllers; video mixers; video monitor controllers; video monitors; video multiplexing apparatus; video multiplexing apparatus for use with video camera installations; video playback apparatus; video players; video processing apparatus; video processors; video production apparatus; video projection apparatus; video projection monitors; video projectors; video recorders; video recording apparatus; video recording apparatus incorporating sound reproducing apparatus; video recording instruments; video recording materials; video reproducing apparatus; video reproduction instruments; video scanning apparatus; video scanning instruments; video screens; video signalling apparatus; video switching apparatus; video transmitters; video transmitting apparatus; video tuners; video wall installations; videos