The MPEG Library is a collection of C routines to decode MPEG movies and dither them in a variety of colour schemes. Most of the code in the library comes directly from the Berkely MPEG player, an X11-specific implementation that works fine, but suffers from minimal documentation and a lack of modularity. A front end to the Berkeley decoding engine was developed by Greg Ward at the Montreal Neurological Institute in May/June 1994 to facilitate the development of an MPEG player specifically for Silicon Graphics workstations; the decoding engine together with the MNI front end constitute the MPEG Library.