User guide

Viz Engine Administrator’s Guide

22 Glossary

This section describes words and acronyms that are used throughout the

documentation:

5.1

Delivers five audio channels and 1 Low-frequency Effect (LFE) channel from a 6 channel

source.

6DoF

Six degrees of freedom (6DoF) is used in interactive scenes to move and rotate objects

in 3D on a defined grid.

7.1

Delivers seven audio channels and one Low-frequency Effect (LFE) channel from an 8

channel source.

AES

Audio Engineering Society (AES). Also known for the digital audio standard frequently

called AES/ EBU , officially known as AES3, is used for carrying digital audio signals

between various devices; hence, the term AES/EBU connectors.

AGP

Accelerated Graphics Port (AGP) is a high-speed point-to-point channel for attaching a

graphics card to a computer’s motherboard, primarily to assist in the acceleration of 3D

computer graphics.

Anamorphic widescreen

Anamorphic widescreen is a videographic technique utilizing rectangular (wide) pixels

to store a widescreen image to standard 4:3 aspect ratio.

ANC data

Ancillary data refers to a means which by non-video information (such as audio, other

forms of essence, and metadata) may be embedded within the serial digital interface

(SDI). Ancillary data packets are commonly divided into two types, depending on where

they are located.

Ancillary packets located in the horizontal blanking region (after EAV but before SAV),

regardless of line, are known as horizontal ancillary data, or HANC. HANC is commonly

used for higher-bandwidth data, and/or for things that need to be synchronized to a

particular line; the most common type of HANC is embedded audio.

Ancillary packets located in the vertical blanking region, and after SAV but before

EAV, are known as vertical ancillary data, or VANC. VANC is commonly used for low-

bandwidth data, or for things that only need be updated on a per-field or per-frame

rate. Closed caption data and VPID are generally stored as VANC.