Glossary of Film and Electronic Media Terms

O-and-O A broadcast station owned and operated by a network.

objective camera A sustained camera angle that approximates the viewpoint of a human observer.

off-line editing Editing from a copy of original footage in order to try out various options and create a blueprint for the final on-line edit.

ohm A measure of electrical resistance or impedance.

omega wrap The tape path used in some helical videotape machines that resembles Greek letter Omega.

omnidirectional A microphone sensitivity pattern in which sounds are picked up (more or less) equally from all directions.

on-air director The technical director. Primarily responsible for video switching during a production.

on-line editing / on-lining Editing, generally from an off-line EDL, that produces the final recording.

open architecture A computer design that allows for the easy addition of circuit boards produced by a variety of manufactures

operating system Software that manages a computer's basic capabilities, including command interpretation. A common example is the DOS system.

optical disc A recording medium for audio and/or video where a laser beam is used to record and play back digitally-coded information.

optical fiber A glass strand conductor designed to conduct light waves modulated with audio or video information. (See also fiber optic.)

opticals Film special effects associated with optical printing.

option Money paid to a writer by a producer for exclusive rights to a script. A specific time is specified during which the producer tries to put together funding to put the project into production.

OS-shot A shot taken over the shoulder of one person, focusing on the face of a second person.

OSV A script designation for an off-screen voice.

out-takes Shots deleted or not used in the final edit.

outside vendors Hiring outside production agencies to do production work. Typically an in-house staff is used to initiate, guide and possibly supplement the work.

overexposure Excessive amounts of light from the lens transmitted to the camera's target. This normally results in loss of video quality. The problem is solved by using a smaller iris opening.

overhead expenses Basic on-going costs related to maintaining a production facility, not directly related to a specific production.

overscanning A loss of some information around the outer edges of a picture, typically, as a result of the broadcast and reception process.

overtone Acoustical or electrical frequencies that are multiples of the fundamental frequency or sound. Overtones add richness and uniqueness to sound.


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