MPEG

The Moving Picture Experts Group (http://drogo.cselt.stet.it/mpeg/), a working group convened by the International Standards Organization (ISO) and the International Electro-technical Commission (IEC) to create Standards for digital representation of moving pictures and associated audio and other data, has developed the MPEG standard. MPEGI and MPEG2
are the current standards. Using MPEGI, you can deliver 1.2 Mbps (megabits per second) of video and 250 Kbps (kilobits per second) of two-channel stereo audio using CD-ROM technology. MPEG2. a completely different system from MPEG1, requires higher data rates (3 to 15 Mbps) but deliverers higher image resolution, picture quality, interlaced video formats, multi-resolution scalability, and multichannel auto features.
MPEG may become the method of choice for encoding motion images because it has become widely accepted for both Internet and DVD-Video For MPEG1, hardware playback will become common on motherboards and video cards. Software decompression algorithms for MPEGI, while slower than hardware solutions, are incorporated in QuickTime, and Microsoft has licensed a driver from MediaMatics for use with Windows 95.


MPEG-1
It can deliver 1.2 mbps of video and 250 kpbs of two channel stereo audio using CD-ROM technology. For MPEG hardware will be common on motherboard and video card’s software are from quick time, Microsoft, and Media motion.
MPEG-2
It can requires higher data rates i.e., (3 to 15 mbps) but delivers higher image resolution. Picture quality, interlaced. Video format & multichannel stereo audio feature. MPEG-2 require dedicated hardware and software.
MPEG-4
It is also available and provides a new content based method for multimedia elements. It also offer not only indexing, hyperlinking, querying, browing, uploading, downloading and deleting functions but also ‘hybrid natural and synthetic data coding’. With MPEG-4, multiple views and multiple soundtracks of a scene as well as 3D view are also available.
MPEG-7
On the standard horizon, it goes a further step to MPEG-4 by integrating image, sound or motion video elements being used in a composition.
E.g., MPEG-7 may include classes for facial expressions, personality characteristics etc.
The MPEG Motion Video Compression Standard
Digital motion video can be accomplished with the JPEG still-image standard if you have fast enough hardware to process 30 images per second. However, the maximum compression potential cannot be achieved because the redundancy between frames is not being exploited. Further more, there are many other things to be considered in compressing and decompressing motion video, as indicated in the objectives below.