title: Already installed ffmpeg, how to add libvpx after the fact
body: <p>I have ffmpeg already installed on my server for the past 6 months, everything works fine but now it seems I need libvpx to be added to it so I can encode webm files. Is it possible to add this to my current ffmpeg or does it need to be removed and rebuilt from scratch?</p>
  
  <p>My current ffmpeg setup looks like this -</p>
  
  <pre><code>ffmpeg version N-35515-g901af94-syslint, Copyright (c) 2000-2011 the FFmpeg developers
    built on Dec  6 2011 20:05:55 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
    configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
  </code></pre>