The Free On-line Dictionary of Computing (30 December 2018):

MPEG-1

    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)