Television production trucks were developed to take television studios on the road. Video productions could be made at distant locations for a remote broadcast, outside broadcasting (OB), or electronic field production (EFP) with multiple-camera setup. Each production varies. Some require a crew of about 12-16 to make sure the production goes smoothly, with additional trucks for additional equipment as well as an uplink truck to transmit video back to the studio. Some production trucks contain both the functions of a satellite truck and production in a single truck body to save space, time and cost.
Other television production trucks are smaller in size and generally require two or three people in the field to manage. For instance broadcast journalism news reporters providing live television, local news in the field electronic news gathering (ENG) outside a formal television studio. In some cases, it can be a station wagon, people carrier or even a motorbike (especially in cities with congested streets or where a rapid response is needed and a motorbike is more maneuverable).
Maps, Directions, and Place Reviews
Equipment
- Vision mixer - switch between multiple video feeds to produce an easy to watch television experience.
- Video monitor - monitor different routable sources on multiple monitors to help select which feed is the best at any given time.
- Frame synchronizer - puts Asynchronous or "wild" video sources into Synchronization with other video signals.
- Video router - send video and audio to any destination from any source.
- Audio Mixing console - combine any source of audio and change the level and dynamics of the audio, digital or analog audio sources.
- Intercom - Two wire or Four wire intercom allows everyone on the production able to communicate quickly and effectively.
- Video tape recorder - VTR's record a high quality of video and make it easy to store and share video.
- Video server - Plays video clips (and sometimes visual effects) used during the broadcast.
- Professional video cameras - source of the video feeds sent back to the truck.
- Microphones - the many different style adapt to the different applications for these in television and filming.
- Electrical cables - Triaxial cable, Coaxial cable, Audio multicore cable, XLR connector, Optical fiber and Power cables (Edison)
Camera For Trucks Video
Crew
A television crew can include: Technical Director, Camera operator, Video Tape Operator, Video Technician, Audio Mix Engineer, Audio Assistant, Graphic Operator, Production Assistant and Broadcast Engineer.
Transmission of video
There are many ways of transmitting the video to different places in the world.
Microwave link
The earliest method, used before satellites and videotape and still used for short ranges, is to beam the video directly back to the studio using a microwave dish. Microwave transmission requires an unobstructed line-of-sight path from the transmitting to the receiving antenna, which can be difficult to achieve in urban locations. Some production trucks have a small microwave dish mounted on a telescoping mast, that can be raised 30 to 40 feet to "see" over buildings and other obstructions.
Satellites used for transmission of television
After the 1970s there were enough satellites in orbit that satellite communication start a consumer market for satellite use in television.[1] This open market for satellite space spawned a flurry in mobile satellite uplink truck's for hire in the United States. Using these trucks in accordance with a television production truck allowed for live viewing of television all across the world. (See also Satellite television). There are trucks being built with the capability for both television production and satellite uplink they are frequently called hybrids. (See also SDTV)
Fiber optic lines
Where available, production trucks can use existing high capacity fiberoptic cable to send video directly via the Internet to broadcasting companies for distribution. These accept an asynchronous serial interface (ASI) digital stream from the video encoder. This is a very high quality, low loss way of sending video quickly and securely around the world.
Source of the article : Wikipedia
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