Mine

edgar@/usr/www/vidtest # ffmpeg -i BF2142_640x360.mov -acodec mp3 ffmpeg_output.flv
FFmpeg version SVN-r5936, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-memalign-hack --enable-mp3lame --enable-faad --extra-cflags=-I/usr/local   /include --extra-ldflags=-L/usr/local/lib --enable-gpl
  libavutil version: 49.0.0
  libavcodec version: 51.11.0
  libavformat version: 50.5.0
  built on Aug  5 2006 20:49:43, gcc: 3.4.4 [FreeBSD] 20050518
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'BF2142_640x360.mov':
  Duration: 00:01:48.4, start: 0.000000, bitrate: 2587 kb/s
  Stream #0.0(eng): Video: svq3, yuv420p, 640x360, 30.00 fps(r)
  Stream #0.1(eng): Audio: pcm_s16be, 44100 Hz, stereo, 1411 kb/s
Output #0, flv, to 'ffmpeg_output.flv':
  Stream #0.0: Video: flv, yuv420p, 640x360, q=2-31, 200 kb/s, 30.00 fps(c)
  Stream #0.1: Audio: mp3, 44100 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop encoding
frame= 3253 q=31.0 Lsize=   10190kB time=108.4 bitrate= 769.8kbits/s
video:9227kB audio:847kB global headers:0kB muxing overhead 1.149999%