This document summarizes different video systems used in broadcasting including analog composite video, component video, HDMI, and DVI. It also discusses outputs like TVs and projectors. Projectors can be front or rear projection and have different display modes. A vision mixer is used to switch between multiple video inputs and can perform transitions, effects, and picture-in-picture. It allows the director to cut between shots for a live broadcast. Skills like working under pressure and reacting quickly are important for the video production team.

1. Videosystems
Basic VideoSystem: Show relay:
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 Adapters-change the connectortype
 Most cablesare BNC(theylockinplace)- BNCconnector
Composite video:
 Yellow=compositevideo red/white-leftandwhite audio
 Analogue
 480i/576i resolution(low resolution)
 All transmissionsonone cable
 Over40m distributionamplifier
Componentvideo-HD:
 Analogue
 Resolutionupto 1080p
 Red,green,blue cable
High definitionmultimediainterface (HDMI):
 Digital
 Up to 2160p resolution(Highresolution)
Digital videointerface (DVI)
Videosystems
Outputs:
 TV-standalone display
 42’ (max inschool)
Camera
TV
Camera
Splitter
TV TVTV
Splitter TV2TV1
CCTV
Camera
Tabs

2. Projectors:
 4m max image size in school
 Lowerresolution
 Tendto be expensive
 Front projection-Normal
 Rear Projection- Puton‘mirrormode’
 Ceilingmountedfrontprojection- Puton‘ceilingmode’
 Rear ceilingmountedprojection- Puton‘Mirrorceilingmode’
Rear projection-needsasemi-translucentscreen-Lose alittle brightness
Visionmixer:(Desk)
 Cuts multipleinputsto1or more output(s)
 Switch-one inputtoanotherunlike avisionmixerwhichcanmix/overlayinputs
 Real time FX/transitions/Chromakey/pictureinpicture (news)
Projector
Screen
Front projection
Rear ceilingprojection
Rear projection
Ceilingprojection

3. A vision mixer:
 Works closelywiththe director
 Cuts shotsshownonthe TV/Screen
 Visionmixingdesk
 Watch preview(PVW) monitors-bottom4on bottomrole
 Lefthand forcameras
 Righthand forothereffects
 Transmissionmonitor-what’sshownonscreenof TV’s
Typical day for ‘Strictly come dancing it takes two’:
 1st
half of day blockthrough
 Look at insand outcues
 Dressrehearsal
 Live
Skillsand qualitiesneeded:
 Pressure
 Needtoreact quickly
Videoteam:
 Cameraoperator(live/robotic)
 Director
 Visionmixer
 Pre-productionteam