$ mencoder test.avi rawvideo -af resample=44100:0:0 -ovc raw -vf scale=220:176,harddup -ofps 15 -zoom -xy 220 -|mencoder - -rawvideo fps=15:w=220:h=176 -demuxer rawvideo -of mpeg -oac mp3lame -lameopts vbr=2:q=7 -ovc lavc -lavcopts vcodec=mpeg2video:vbitrate=250 -o /tmp/test.mpg
MEncoder 1.0rc2-4.1.2 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz (Family: 6, Model: 15, Stepping: 6)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Reading from stdin...
success: format: 0  data: 0x0 - 0x0
rawvideo file format detected.
[V] filefmt:26  fourcc:0x30323449  size:220x176  fps:15.00  ftime:=0.0667
PACKET SIZE: 2048 bytes, deltascr: 245760
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 220 x 176 (preferred colorspace: Planar I420)
VDec: using Planar I420 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
videocodec: libavcodec (220x176 fourcc=3267706d [mpg2])
Selected video codec: [rawi420] vfm: raw (RAW I420)
==========================================================================
Limiting audio preload to 0.4s.
Increasing audio density to 4.
Frame too small! (328<58080) Wrong format?
Pos:   0.0s      1f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Flushing video frames.
Writing index...

Overhead: nan% (0 / 0)
Writing header...

Video stream:      nan kbit/s  (-2147483648 B/s)  size: 0 bytes  0.000 secs  1 frames