 A Sony BVS-3200CP vision mixer A vision mixer (also called video switcher, video mixer or production switcher) is a device used to select between several different video sources and in some cases composite (mix) video sources together and add special effects. This is similar to what a mixing console does for audio. ImageMetadata File history File links Download high resolution version (1620x1132, 232 KB) A Sony BVS-3200CP vision mixer. ...
ImageMetadata File history File links Download high resolution version (1620x1132, 232 KB) A Sony BVS-3200CP vision mixer. ...
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Video (Latin for I see, first person singular present, indicative of videre, to see) is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion. ...
BBC Local Radio Mark III radio mixing desk In professional audio, a mixing console, mixing desk (Brit. ...
Explanation Typically a vision mixer would be found in a professional television production environment such as a television studio, cable broadcast facility, commercial production facility or linear video editing bay. The term can also refer to the person operating the device. A television studio is an installation in which television or video productions take place, either for live television, for recording live on tape, or for the acquisition of raw footage for postproduction. ...
Coaxial cable is often used to transmit cable television into the house. ...
The examples and perspective in this article or section may not represent a worldwide view. ...
Linear video editing is the process of selecting, arranging and modifying the images and sound recorded on video tape whether captured by a video camera or recorded in a studio. ...
Vision mixer and video mixer are almost exclusively European terms to describe both the equipment and operators. In the United States, the common name for a device of this kind is (video) production switcher and the common name for the operator of the device is known as technical director. This article is 150 kilobytes or more in size. ...
The Technical Director or Technical Producer (TP) is usually the most senior technical person within a theatrical company or television studio. ...
Software vision mixers are also available. A software vision mixer provides similar functionality to that of a hardware vision mixer. ...
Capabilities and usage in TV Productions Besides hard cuts (switching directly between two input signals), mixers can also generate a variety of transitions, from simple dissolves to pattern wipes. Additionally, most vision mixers can perform keying operations and generate color signals (called mattes in this context). Most vision mixers are targeted at the professional market, with newer analog models having component video connections and digital ones using SDI. They are used in live and video taped television productions and for linear video editing, even though the use of vision mixers in video editing has been largely supplanted by computer based non-linear editing. Electrical switches. ...
In telecommunication, a transition is the change from one signal state to another signal state. ...
In film editing, a dissolve is a gradual transition from one image to another. ...
In film editing, a wipe is a gradual spatial transition from one image to another. ...
In graphics and visual effects, keying is an informal term for compositing two full frame images together, by discriminating the visual information into values of color and light. ...
Mattes are used in photography and filmmaking to insert part of a foreground image onto a background image, which is often a matte painting, a background filmed by the second unit, or computer generated imagery. ...
Three cables, each with RCA plugs at both ends, are often used to carry analog component video Component video is a video signal that has been split into two or more components. ...
The Serial Digital Interface (SDI), standardized in ITU-R BT.656 and SMPTE 259M, is a digital video interface used for broadcast-grade video. ...
Live television refers to television broadcasts of events or performances on a delay of between zero and fifteen seconds, rather than from video recordings or film. ...
The video cassette recorder (or VCR, less popularly video tape recorder) is a type of video tape recorder that uses removable cassettes containing magnetic tape to record audio and video from a television broadcast so it can be played back later. ...
Linear video editing is the process of selecting, arranging and modifying the images and sound recorded on video tape whether captured by a video camera or recorded in a studio. ...
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It has been suggested that Movie Making Software be merged into this article or section. ...
Older professional mixers worked with composite video inputs. There are still a number of consumer video switchers with composite video, S-Video or even FireWire available. These are often used for VJing, presentations, and small multi-camera productions. Composite video is the format of an analog television (picture only) signal before it is combined with a sound signal and modulated onto an RF carrier. ...
S-Video (also known as Y/C) is a baseband analog video format offering a higher quality signal than composite video, but a lower quality than RGB and component video. ...
The 6-pin and 4-pin FireWire Connectors FireWire is Apple Inc. ...
A video jockey (usually abbreviated to VJ or sometimes veejay) can mean two things: One describes an announcer who introduces and plays videos on commercial music television such as MTV or VH1. ...
Operation The main concept of a professional vision mixer is the bus, basically a row of buttons with each button representing a video source. Pressing such a button will set the video out of that bus. Older video mixers had two equivalent busses (called the A and B bus, such a mixer is known as an A/B mixer). One of these busses could be selected as the main out (or program) bus. Most modern mixers, however, have one bus that is always the program bus, the second main bus being the preview bus. These mixers are called flip-flop mixers, since the selected source of the preview and program busses can be exchanged. Both preview and program bus usually have their own video monitor. A video monitor is similar to a television. ...
Another main feature of a vision mixer is the transition lever, also called a T-bar. This lever, similar to an audio fader, creates a transition between two buses. Note that in a flip-flop mixer, the position of the main transition lever does not indicate which bus is active, since the program bus is always the active or hot bus. Instead of moving the lever by hand, a button (commonly labeled "mix" "auto" or "auto trans") can be used, which performs the transition over a user-defined period of time. Another button, usually labeled "cut" or "take", directly swaps the busses without any transition. The type of transition used can be selected in the transition section. Common transitions include dissolves (similar to an audio crossfade) and pattern wipes. In telecommunication, a transition is the change from one signal state to another signal state. ...
Crossfade is a post-grunge/hard rock band from Columbia, South Carolina. ...
The third bus on a vision mixer is the key bus. A mixer can actually have more than one of these, but they usually share only one set of buttons. Here, a signal can be selected for keying into the program. The image that will be seen in the program is called the fill, while the mask used to create the keys' translucence is called the source. This source, e.g. chrominance, luminance, pattern (the internal pattern generator is used) or split (an additional video signal similar to an alpha channel is used) and can be selected in the keying section of the mixer. Note that instead of the key bus, other video sources can be selected for the fill signal, but the key bus is usually the most convenient method for selecting a key fill. Usually, a key is turned on and off the same way a transition is. For this, the transition section can be switched from program (or background) mode to key mode. Chrominance (chroma for short) comprises the two components of a television signal that encode color information. ...
As applied to analog television signals, two different words are used, luminance and luma, meaning two different things. ...
In computer graphics, alpha compositing is often useful to render image elements in separate passes, and then combine the resulting multiple 2D images into a single, final image in a process called compositing. ...
These three main buses together form the basic mixer section called Program/Preset or P/P. Bigger production mixers may have a number of additional sections of this type, which are called Mix/Effects (M/E for short) and numbered. Any M/E section can be selected as a source in the P/P stage, making the mixer operations much more versatile, since effects or keys can be composed "offline" in an M/E and then go "live" at the push of one button.
After the P/P section, there is another keying stage called the downstream keyer. It is mostly used for keying text or graphics, and has its own "Cut" and "Mix" buttons. After the downstream keyer is one last stage that overrides any signal with black, usually called FTB or Fade To Black.
Modern vision mixers may also have additional functions, such as machine control, aux channels for routing signals to other sources than the program out, macro programming and DVE (Digital Video Effects) capabilities. A macro in computer science is an abstraction, that defines how a certain input pattern is replaced by an output pattern according to a defined set of rules. ...
Setup Since vision mixers combine various video signals such as VTRs and video cameras, it is very important that all these sources are properly synchronized. In professional facilities a sync generator feeds all the equipment. Sync can also be achieved by sending out a black burst signal from the switcher (this method is called "genlock" ). Signals which cannot be synchronized (either because they originate outside the facility or because the particular equipment doesn’t accept external sync) must go through a frame store synchronizer. Some vision mixers have internal “frame-syncs” or they can be a separate piece of equipment, such as a "time base corrector". If the mixer is used for video editing, the editing console (which usually controls the vision mixer remotely) must also be synced. Most larger vision mixers divide the control panel from the actual circuitry because of noise, temperature and cable length considerations. The control panel is located in the production control room, while the main unit, to which all cables are connected, is located in a machine room alongside the other hardware. A video tape recorder (VTR), is a tape recorder that can record video material. ...
A video camera is a camera used for electronic motion picture acquisition, initially developed by the television industry but now common in other applications as well. ...
A television studio is an installation in which television or video productions take place, either for live television, for recording live on tape, or for the acquisition raw footage for postproduction. ...
Manufacturers of vision mixers // “FOR-A†is a brand name for professional broadcast video and audio equipment. ...
Founded in 1985 in Kansas, USA, by Tim Jenison, NewTek produces video post-production and imaging tools for personal computers. ...
It has been suggested that ToasterEdit, ToasterCG be merged into this article or section. ...
Panasonic is an international brand name for Japanese electric products manufacturer Matsushita Electric Industrial Co. ...
Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world. ...
Snell & Wilcox is a company that design and develop infrastructure solutions for digital media markets. ...
This article concerns the media and entertainment company. ...
Grass Valley, previously known as Grass Valley Group, is a subsidiary company of the French company Thomson. ...
References February 28 is the 59th day of the year in the Gregorian calendar. ...
2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...
February 28 is the 59th day of the year in the Gregorian calendar. ...
2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...
November 1 is the 305th day of the year (306th in leap years) in the Gregorian Calendar, with 60 days remaining. ...
For album titles with the same name, see 2002 (album). ...
Also See Patch panel (video selector switches, routers, matrix switchers, crosspoint switchers) A patch panel is a panel, typically rack mounted, that may house cable connections. ...
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