Ericsson SVP 2000, Reference Manual, Page: 165 / 196

Glossary
Macroblock A 16x16-pixel area of the TV picture. Most processing within the
MPEG domain takes place with macro blocks. These are converted
to four 8x8 blocks using either frame DCT or field DCT. Four 8 x 8
blocks of luminance data and two (4:2:0 chrominance format), four
(4:2:2) or eight (4:4:4) corresponding 8 x 8 blocks of chrominance
data coming from a 16 x 16 section of the luminance component of
the picture. Macroblock can be used to refer to the sample data and
to the coded representation of the sample values and other data
elements.
Manifest file see Media Presentation Description
Mbps Million bits per second.
MCC Multiplex Control Computer: A component of a System 3000
compression system. The MCC sets up the configuration for the
System 3000 Multiplexers under its control. The MCC controls both
the main and backup Multiplexer for each transport stream.
MCPC Multiple Channels Per Carrier.
Media Presentation
Description The DASH manifest (XML) file created by the Encoder to identify the
video profile contents and locations. This is pulled by the Decoder
where it is used to manage the segmented video encoded by the
appropriate profile.
MEM Multiplex Element Manager: A GUI-based control system, part of the
range of Ericsson AB compression system control element products.
The evolution
5 000 MEM holds a model of the system hardware.
Using this model, it controls the individual system elements to
configure the output multiplexes from the incoming elementary
streams. The MEM monitors the equipment status and controls any
redundancy switching.
Meta-data Meta-data is descriptive data that is "tagged" to a movie or audio
clip. Meta-data is essential for the broadcaster.
MMDS Multichannel Microwave Distribution System: A terrestrial microwave
direct-to-home broadcast transmission system.
Motion
Compensation The use of motion vectors to improve the efficiency of the prediction
of sample values. The prediction uses motion vectors to provide
offsets into the past and/or future reference frames or fields
containing previously decoded sample values that are used to form
the prediction error signal.
Motion Estimation The process of estimating motion vectors in the encoding process.
Motion Vector A two-dimensional vector used for motion compensation that
provides an offset from the coordinate position in the current picture
or field to the coordinates in a reference frame or field.
MP@ML Main Profile at Main Level: A subset of the MPEG-2 standard, which
supports digital video storage (DVD etc.) and transmissions up to 15
Mbps over various mediums.
MP@HL Main Profile at High Level: A subset of the MPEG-2 standard, which
supports digital video storage (DVD etc.) and transmissions up to 80
Mbps over various mediums.
EN/LZT 790 0046/1 R1A A-11