$ mencoder MEncoder 2:1.0~rc1-0ubuntu9.1 (C) 2000-2006 MPlayer Team CPU: AMD Athlon(tm) 64 Processor 3500+ (Family: 15, Model: 47, Stepping: 2) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1 Compiled with runtime CPU detection. No file given Exiting... (error parsing command line)