title: How can I extract audio from FLV?
body: <p>I need to extract the audio from a FLV file recorded using FMS. I used the SPEEX coded in my flash application that streams the audio and video to FMS.</p>
  
  <p>I have tried using FFMPEG, with no luck. This is the -i outputs of my FLV:</p>
  
  <p><strong>FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
    configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg --enable-libgsm --enable-dc1394 --disable-debug --enable-shared --prefix=/usr
    libavutil version: 1d.49.3.0
    libavcodec version: 1d.51.38.0
    libavformat version: 1d.51.10.0
    built on Apr 23 2010 15:11:13, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
  [flv @ 0xb7ed7110]Unsupported audio codec (b)
  [flv @ 0xb7ed7110]Unsupported audio codec (b)
  Input #0, flv, from 'm.flv':
  Duration: 00:00:05.0, start: 0.000000, bitrate: N/A
  Stream #0.0: Video: flv, yuv420p, 288x203, 1000.00 fps(r)
  Stream #0.1: Audio: 0x000b, 11025 Hz, mono</strong></p>
  
  <p>I need a command line utility, since this will be executed from a server.</p>
  
  <p>Thanks in advance.</p>