Appendix C
Glossary

Numbers

4:2:2 digital video A digital video system defined by the ITU-R 601 (CCIR 601) technical documentation. 4:2:2 refers to the comparative ratio of sampling of the three components of the video signal: luminance and two color channels.

A

A-mode A linear method of assembling edited footage. In A-mode, the editing system performs edits in the order they will appear on the master, stopping when the edit decision list (EDL) calls for a tape that is not presently in the deck.

add edit An edit added between consecutive frames in a sequence segment within the Timeline. An add edit separates segment sections so the user can modify or add effects to a subsection of the segment.

AES/EBU Audio Engineering Society/European Broadcasting Union. A standards-setting organization that defined a digital signal format for professional audio input to the Avid video-based editing systems using the SA 4 card. This signal format is typically used when you input sound directly to Avid video-based editing systems with a digital audiotape (DAT) machine, thereby bypassing the videotape capture process.