title: Load an extern C-library into an existing C++-Project (f.e. ffmpeg/libavcodec - step by step)
body: <p>I really have big problems with importing an extern C-Library to my existing C++-Project. I want to import <code>libavcodec</code> from the <code>FFmpeg</code>-Project, so I downloaded the latest source-code-release.<br>
  What do I have to do now? Do I have to compile <code>FFmpeg</code> first or can I import it just like that? A really simple step-by-step manual would be awesome!<br>
  (I found tutorials how to use libavcodec when it's imported, so this is not necessary... I didn't found some to import it)</p>