Triple-Play Service Deployment

Glossary
MPEG-4 ISO/IEC 14496 standard that defines MPEG-4 video and audio compression. It
specifies simultaneous coding of synthetic and natural objects and sound.The same
definitions are embodied in the ITU recommendation H.264.
While MPEG2 was designed to scale up to broadcast and high-definition quality
and operating requirements, MPEG4 is designed to scale down to accommodate
dial-up Internet bandwidths and to small devices including cell phones and PDAs
while remaining viable for high-quality desktop streaming up to 1 Mbps. The AAC
audio codec is the root of the MP4 file type, recently popularized by Apple iTunes,
among others.
MPEG4 is much more than just an audio and video compression and decompression
scheme. It is a container for media objects (images, text, video, animation,
interactive elements like buttons and image-maps, etc) and a way to choreograph
them into a synchronized, interactive presentation. MPEG4 also has standard
interfaces to allow plugging in a DRM scheme called Intellectual Property
Management and Protection (IPMP).
MPEG4 is still at the frontier of media technologies. The specification is extensive,
and each vendor implements it in its own way by selecting from a set of tools which
are important for the target application. Many MPEG4 tools include incompatibilities.The
Internet Streaming Media Association (ISMA) is an industry consortium
dedicated to interoperability among MPEG4 products and services. Essentially, any
implementation that is ISMA-compliant will work with any other.
In MPEG-4 compression each channel of standard definition TV consumes about 1.5
to 2 Mbps, and enhanced versions such as Microsoft’s Media Player 9 or VC-1 based
approach can achieve about 1 Mbps per channel.
MPEG-7 Multimedia Content Description Interface that standardizes descriptions for
searching, filtering, selecting and handling audiovisual content.
MPEG-7 is not a video or audio coding scheme or delivery mechanism. Officially
called the Multimedia Content Description Interface, it is a set of rules and tools for
describing content, and its focus is metadata. The ability to identify, search, index,
and publish information about content is critical. Metadata schemes may include
descriptions of semantic elements (shapes, colors, people, objects, motion, musical
notation); catalog elements (copyright and access rules, parental ratings, title,
location, date, etc); or structural elements (technical stats about the media).
MPEG-21 MPEG-21 focuses upon content distribution: control over content in all parts of the
delivery chain and in all kinds of networks and devices. Its intent is to enable digital
media content to interact with end devices to facilitate seamless access to media
across a variety of devices and networks,regardless of bandwidth or client capability.
MPTS Multiple Program Transport Stream. An MPEG-2 transport stream containing
several programs that have been multiplexed into one stream.
Multimode Fiber An optical fiber in which light travels in multiple modes
Multiplex Combining two or more signals into a single bit stream that can be individually
recovered
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