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 special effects for motion ...
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 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 individual program segments.
The ...
industry include the
Ampex Digital Optics (ADO),
Quantel DPE-5000, Vital Squeezoom,
NEC DVE and Abekas A-51. By the mid-1980s, Grass Valley Group caught up with to 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 b ...
industry in live television production environments like television studios and outside broadcasts. They are commonly used in video post-production
Post-production 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 individual program segments.
The ...
.
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 g ...
* Digital audio workstation
* Quantel Mirage, a DVE advanced for its time
References
Broadcast engineering
Special effects
Computer graphics
Film editing
Cinematic techniques
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