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)