Gem is a loadable library for Pure Data (Pd), which adds OpenGL graphics rendering and animation to Pd. Pd is a graphical programming language and computer music system.

This package provides film/movie decoding using the libmpeg3 library (allowing you to read MPEG-1 and MPEG-2 video files).

NOTE: the gem-plugin-gmerlin package allows you to read those files as well in a more consistent/stable manner.