LMPC is a tool to manipulate games recordings (demos).  Supported games are
DOOM, DOOM II, Heretic, Hexen, Strife (LMP files), Duke Nukem 3D, Redneck
Rampage (DMO files), Quake (DEM), QuakeWorld (QWD), Quake II (DM2, client
recorded, server recorded, relay files), and Quake III Arena (DM3 files, or
dm_68 more precisely).  It also includes DEM file cutter tool (DEMcut), DEM
text file analyser (DEMA), demo broadcasting server (DBS), and DM2 file
concatenator (DM2cat).

WWW: http://demospecs.half-empty.de/lmpc-alpha/