Digital video effects (DVEs) are

visual effect Visual effects (sometimes abbreviated VFX) is the process by which imagery is created or manipulated outside the context of a live-action shot in filmmaking and video production. The integration of live-action footage and other live-action foota ...

s that provide comprehensive live video image manipulation, in the same form as optical printer effects in film. DVEs differ from standard

video switcher A vision mixer is a device used to select between several different live video sources and, in some cases, compositing live video sources together to create visual effects. In most of the world, both the equipment and its operator are called ...

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 industry include the

Ampex Ampex is an American electronics company founded in 1944 by Alexander M. Poniatoff as a spin-off of Dalmo-Victor. The name AMPEX is a portmanteau, created by its founder, which stands for Alexander M. Poniatoff Excellence.AbramsoThe History ...

Digital Optics (ADO),

Quantel Quantel was a company based in the United Kingdom and founded in 1973 that designed and manufactured digital production equipment for the broadcast television, video production and motion picture industries. They were headquartered in Newbury, ...

DPE-5000, Vital Squeezoom,

NEC is a Japanese multinational information technology and electronics corporation, headquartered in Minato, Tokyo. The company was known as the Nippon Electric Company, Limited, before rebranding in 1983 as NEC. It provides IT and network soluti ...

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 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 over the Internet when content or programming is played continuously (not on deman ...

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 broadcasting (OB) is the electronic field production (EFP) of television or radio programmes (typically to cover television news and sports television events) from a mobile remote broadcast television studio. Professional video camera a ...

s. They are commonly used in video post-production.

References

Broadcast engineering Special effects Computer graphics Film editing Cinematic techniques {{tv-tech-stub

See also

References