Digital video effects (DVEs) are
visual effects that provide comprehensive live video image manipulation, in the same form as
optical printer
An optical printer is a device consisting of one or more film projectors mechanically linked to a movie camera. It allows filmmakers to re-photograph one or more strips of film. The optical printer is used for making visual effects for motion p ...
effects in film. DVEs differ from standard
video switcher effects (often referred to as ''analog effects'') such as wipes or dissolves, in that they deal primarily with resizing, distortion or movement of the image. Modern video switchers often contain internal DVE functionality. Modern DVE devices are incorporated in high-end broadcast video switchers.
Early examples of DVE devices found in the broadcast
post-production
Post-production, also known simply as post, is part of the process of filmmaking, video production, audio production, and photography. Post-production includes all stages of production occurring after principal photography or recording indivi ...
industry include the
Ampex
Ampex Data Systems Corporation is an American electronics company founded in 1944 by Alexander M. Poniatoff as a spin-off of Dalmo-Victor. The name ''AMPEX'' is an acronym, created by its founder, which stands for Alexander M. Poniatoff Excell ...
Digital Optics (ADO),
Quantel DPE-5000, Vital Squeezoom,
NEC
is a Japanese multinational information technology and electronics corporation, headquartered at the NEC Supertower in Minato, Tokyo, Japan. It provides IT and network solutions, including cloud computing, artificial intelligence (AI), Inte ...
E-Flex and the Abekas A5x series of DVEs. By 1988,
Grass Valley Group caught up with the competition with their Kaleidoscope,
Grass Valley 1988 Kaleidoscope Demo
/ref> which integrated ADO-type effects with their widely used line of broadcast switching gear.
DVEs are used by the broadcast television
Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals.
Analog television systems were standardized ...
industry in live television
Live television is a television production broadcast in real-time, as events happen, in the present. In a secondary meaning, it may refer to streaming television where all viewers watch the same stream simultaneously, rather than watching vide ...
production environments like television studio
A television studio, also called a television production studio, is an installation room in which video productions take place, either for the production of live television and its recording onto video tape or other media such as SSDs, or for ...
s and outside broadcast
Outside or Outsides may refer to:
* Wilderness
Books and magazines
* ''Outside'', a book by Marguerite Duras
* Outside (magazine), ''Outside'' (magazine), an outdoors magazine
Film, theatre and TV
* Outside TV (formerly RSN Television), a televi ...
s. They are commonly used in video post-production
Post-production, also known simply as post, is part of the process of filmmaking, video production, audio production, and photography. Post-production includes all stages of production occurring after principal photography or recording indivi ...
.
See also
* Character generator
A character generator, often abbreviated as CG, is a device or software that produces static or animated text (such as news crawls and credits rolls) for keying into a video stream. Modern character generators are computer-based, and they can ...
* Digital audio workstation
A digital audio workstation (DAW ) is an electronic device or application software used for Sound recording and reproduction, recording, editing and producing audio files. DAWs come in a wide variety of configurations from a single software pr ...
* Quantel Mirage, a DVE advanced for its time
References
Broadcast engineering
Special effects
Computer graphics
Film editing
Cinematic techniques
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