TANDBERG EN8000, Справочное руководство

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Reference Guide: EN8000 MPEG-4 Part 10 (H.264/AVC) Encoders Page A-1
ST.RE.E10233.1
Annex A
A. Glossary
The following list covers most of the abbreviations, acronyms and terms as used in TANDBERG Television
Limited Manuals, User and Reference Guides. All terms may not be included in this Reference Guide.
µ
m Micrometre (former name - micron): a unit of length equal to one millionth (10
-6
) of a metre.
3:2 pulldown A technique used when converting film material (which operates at 24 pictures per second) to
525-line video (operating at 30 pictures per second).
4:2:0 Digital video coding method in which the colour difference signals are sampled on alternate
lines at half the luminance rate.
4:2:2 Digital video coding method in which the colour difference signals are sampled on all lines at
half the luminance rate.
422P@ML 422 Profile at Main Level: A subset of the MPEG-2 standard, which supports digital video
storage (DVD etc.) and transmissions up to 50 Mbit/s over various mediums. Used for
Contribution and Distribution applications.
5B6B 5 Binary Bits Encoded to 6 Binary Bits: Block code.
AAC Advanced Audio Compression algorithm that has been ratified for both MPEG-2 (ISO/IEC
11818-7) andMPEG-4 (ISO/IEC 14496-3)
AACplus This is the trademark name for the version of MPEG-4 AAC which includes Spectral Band
Replication (SBR) to achieve extremely low bitrate encoding.
AC-3 Audio Coding algorithm number 3 (See Dolby Digital).
ACC Authorisation Control Computer.
ADPCM Adaptive Differential Pulse Code Modulation: An advanced PCM technique that reduces
the bit-rate by coding the difference values between successive samples rather than the
absolute value of each sample.
ADT Audio, Data And Teletext.
ADTS Audio Data Transport Stream is the method of encapsulation MPEG-2 AAC bitstream into
transport stream.
AFC Automatic Frequency Control.
AFS Automation File Server.
AGC Automatic Gain Control.