title: Upgrade FFmpeg using Git
body: <p>I want to verify if my FFMpeg version is not updated.</p>
  
  <p>Here's the output upon running this command: <code>ffmpeg -version</code></p>
  
  <pre><code>ffmpeg version git-2013-04-05-9a8f1e7 Copyright (c) 2000-2013 the FFmpeg developers
    built on Apr  5 2013 18:38:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  </code></pre>
  
  <p>I am not super familiar when FFmpeg is compiled and installed via Git.</p>
  
  <p>I just followed the Ubuntu Compilation Guide by FFmpeg.</p>
  
  <p>And how do I verify if it is not the latest?</p>
  
  <p>PS: The remote is: <code>git://source.ffmpeg.org/ffmpeg.git</code></p>