MPEG-1

compression, standard, algorithm, file format The first

MPEG format for compressed video, optimised for CD-ROM.

MPEG-1 was designed for the transmission rates of about 1.5

Mbps achievable with Video-CD and CD-i.

It uses discrete cosine transform (DCT) and Huffman coding

to remove spatially redundant data within a frame and

block-based motion compensated prediction (MCP) to remove

data which is temporally redundant between frames. Audio is

compressed using subband encoding. These algorithms allow

better than VHS quality video and almost CD quality audio to

be compressed onto and streamed off a single speed (1x)

CD-ROM drive.

MPEG encoding can introduce blockiness, colour bleed and

shimmering effects on video and lack of detail and

quantisation effects on audio.

The official name of MPEG-1 is International Standard

IS-11172.

(1999-01-06)