A Peep into MPEG 4

MPEG 4 is audio-video compression standard similar to MPEG 1 and MPEG 2 adapting all the features of MPEG 1 and 2 along new features such as (extended) VRML support for 3D rendering, object-oriented composite files (including audio, video and VRML objects), support for externally-specified Digital Rights Management and various types of interactivity. Its formal designation is ISO/IEC 14496.

MPEG 4 has been proven to be successful in three fields:

• Digital television
• Interactive graphics applications
  
• Interactive multimedia

MPEG 4 consists of several parts, which are described below:

Part 1: System- Describes synchronisation and multiplexing of Audio and video.

Part 2: Visual- Visual data compression.

Part 3: Audio- for perpectual coding of audio signals.

Part 4: Conformance- Describe procedures for testing other parts.

Part 5: Reference Software- For demonstrating and clarifying other parts of the standard.
Part6: Delivery Multimedia Integration framework

Part 7: Optimized Reference Software

Part 8: Carriage on IP networks

Part 9: Reference Hardware
Part 10: Advanced Video Coding (AVC)

Part 11: Scene description and Application engine("BIFS")

Part 12: ISO Base Media File Format- File format for storing media content

Part 13: Intellectual Property Management and Protection (IPMP) Extensions.

Part 14: MPEG-4 File Format
Part 15: AVC File Format
Part 16: Animation Framework eXtension (AFX).
Part 17: Timed Text subtitle format.
Part 18: Font Compression and Streaming.
Part 19: Synthesized Texture Stream.
Part 20: Lightweight Application Scene Representation (LASeR).
Part 21: MPEG-J Graphical Framework eXtension (GFX)

Part 22: Open Font Format Specification (OFFS) based on OpenType

Part 23: Symbolic Music Representation (SMR)


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