AAC

Advanced Audio Coding

AAL

ATM Adaptation Layer

Access Unit

A logical sub-structure of an Elementary Stream to facilitate random access or bitstream manipulation

ACE

Advanced Coding Efficiency (Profile)

AFX

Animation Framework eXtension

Alpha plane

Image component providing transparency information

Amd

Amendment

AOI

Area Of Interest

API

Application Programming Interface

ARTS

Advanced Real-time Simple (Profile)

ATM

Asynchronous Transfer Mode

BAP

Body Animation Parameters

BAP

Body Animation Parameter

BDP

Body Definition Parameters

BDP

Body Definition Parameter

BIFS

Binary Format for Scenes

BSAC

Bit-Sliced Arithmetic Coding

CD

Committee Draft

CE

Core Experiment

CELP

Code Excited Linear Prediction

CIF

Common Intermediate Format

CNG

Comfort Noise Generator

DAI

DMIF-Application Interface

DCT

Discrete Cosine Transform

DMIF

Delivery Multimedia Integration Framework

DNI

DMIF Network Interface

DRC

Dynamic Resolution Conversion

DS

DMIF signaling

EP

Error Protection

ER

Error Resilient

ES

Elementary Stream: A sequence of data that originates from a single producer in the transmitting MPEG-4 Terminal and terminates at a single recipient, e.g. an media object or a Control Entity in the receiving MPEG-4 Terminal. It flows through one FlexMux Channel.

FAP

Facial Animation Parameters

FBA

Facial and Body Animation

FCD

Final Committee Draft

FDIS

Final Draft International Standard

FDP

Facial Definition Parameters

FlexMux stream

A sequence of FlexMux packets associated to one or more FlexMux Channels flowing through one Trans­Mux Channel

FlexMux tool

A Flexible (Content) Multiplex tool

FSM

Finite-States Machine

FTTC

Fiber To The Curb

GMC

Global Motion Compensation

GSTN

General Switched Telephone Network

HCR

Huffman Codeword Reordering

HFC

Hybrid Fiber Coax

HILN

Harmonic Individual Line and Noise

HTTP

HyperText Transfer Protocol

HVXC

Harmonic Vector Excitation Coding

IP

Internet Protocol

IPI

Intellectual Property Identification

IPMP

Intellectual Property Management and Protection

IPR

Intellectual Property Rights

IS

International Standard

ISDN

Integrated Service Digital Network

LAR

Logarithmic Area Ratio

LATM

Low-overhead MPEG-4 Audio Transport Multiplex:

LC

Low Complexity

LOAS

Low Overhead Audio Stream

LOD

Level Of Detail

LPC

Linear Predictive Coding

LSP

Line Spectral Pairs

LTP

Long Term Prediction

M4IF

MPEG-4 Industry Forum

MCU

Multipoint Control Unit

Mdat

media data atoms

Mesh

A graphical construct consisting of connected surface elements to describe the geometry/shape of a visual object.

MIDI

Musical Instrument Digital Interface

MPEG

Moving Pictures Experts Group

MPEG-J

Framework for MPEG Java API’s

MSB

Most Significant Bits

NB

National Body

OCI

Object Content Information

OD

Object descriptor

OD

Object Descriptor

PDA

Personal Digital Assistant

PDU

Protocol Data Unit

PSNR

Peak Signal to Noise Ratio

QCIF

Quarter Common Intermediate Format

QoS

Quality of Service

Rendering

The process of generating pixels for display

RTP

Real Time Transport Protocol

RTSP

Real Time Streaming Protocol

RVLC

Reversible Variable Length Coding

SA-DCT

shape-adaptive DCT

SID

Silence Insertion Descriptor

SL

Sync(hronization) layer

SMIL

Synchronized Multi­media Integration Language

SNHC

Synthetic- Natural Hybrid Coding

SNR

Signal to Noise Ratio

Sprite

A static sprite is a - possibly large - still image, describing panoramic background.

SRM

Session Resource Manager

SVG

Scalable Vector Graphics

T/F coder

Time/Frequency Coder

TCP

Transmission Control Protocol

TransMux

generic abstraction for any transport multiplex scheme

TTS

Text-to-speech

UDP

User Datagram Protocol

UEP

Unequal Error Protection

UMTS

Universal Mobile Telecommunication System

VCB

Virtual CodeBook

Viseme

Facial expression associated to a specific phoneme

VLBV

Very Low Bitrate Video

VM

Verification Model

VOP

Video Object Plane

VRML

Virtual Reality Modeling Language

W3C

World Wide Web Consortium

WD

Working Draft

WWW

World Wide Web

XMT

Extensible MPEG-4 textual format