Glossary

Here is a list of terms commonly used in the post production industry.

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FILM TO VIDEO 3/2 SEQUENCE

A problem exists when transferring film shot at 24 FPS to video because the video frame rate scans at 30 frame per second. A mapping process called the 3/2 sequence or "pull-down" is used to accomplish this by repeating the same film frame across different video frames. 1 film frame occupies 3 TV fields, the next 2, etc. The running time remains constant during this process so that 24 frames of film and 30 frames of video are the same1 second duration. Care must be taken in the offline and online process to preserve this 3/2 sequence.

FIREWIRE

The digital standard first developed by Apple Computer and standardized by the IEEE in 1995 as IEEE-1394. It is a serial data transfer protocol and interconnection system. It is used mainly for DV video and Firewire disk drives.