Non-linear editing system
A non-linear editing system is a video editing or audio editing system that can perform random access on the source material.
Non-linear editing
Non-linear editing for film and television postproduction is a popular modern editing method. Non-linear editing means being able to put any frame next to any other frame. This method was inherent in the cut and glue world of film editing from the beginning. Unfortunately, in the analogue world of film, to change it means to destroy what existed before. Video editing, when it first became possible, was a rerecording method, which eliminated the need to destroy previous versions, but was by definition linear. Non linear, non – destructive methods began to appear with the first digital images. The first truly non linear editor was made in the 70's utilizing limited memory B&W images and 15FPS. Various approximations of non linear were built in the 80's using computers coordinating mulitple laser discs, or banks of VCRs. Computer processing advanced sufficiently by the late 80's to enable true digital imagery, and has progressed today to provide this capabiity in software on personal computers. Video and sound are digitised to hard disks. After that, they can be manipulated with software such as Pinnacle Liquid, Avid, Final Cut Pro or Lightworks.
Compared to the linear method of tape-to-tape editing, non-linear editing offers the flexibility of film editing with random access and easy project organization. It is easy to make new versions nondestructively. Initially, only low-resolution pictures could be digitized, as storage was limited and expensive. Broadcast quality and High definition are now possible. The costs of the editing systems have dropped, bringing non-linear editing within reach of a domestic user with a good home computer.
The elements of a computer-based non-linear editing system for video are a computer with a video editing card or video capture card and video editing software. Digital video can be imported into the computer through a FireWire (IEEE 1394) socket and analogue video is imported through composite sockets both of which are found on most video editing cards. Various editing tasks can then be performed on the imported video before it is saved, exported to another medium, or MPEG encoded for transfer to a DVD.
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What makes for a non-linear video editing system
Categories: Video and movie technology | Digital audio