title: gdb and ffmpeg compilation
body: <p>I installed ffmpeg using the instructions of the web site ffmpeg: <a href="http://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide" rel="nofollow noreferrer">http://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide</a>, compilation works fine, they generates a file "ffmpeg_201207131721-git-1_amd64.deb " then, I excute</p>
  
  <pre><code>sudo dpkg-i ffmpeg_201207131721-git-1_amd64.deb
  </code></pre>
  
  <p>When I excute the command </p>
  
  <pre><code>ffmpeg -i -f toto.flv mp3-vn-acodec copy new_video.mp3
  </code></pre>
  
  <p>file "new_video. mp3" is well established. I would like to know what is the command "gdb" that I could use to find the file that have been consulted when i run the command <code>ffmpeg -i -f toto.flv mp3-vn-acodec copy new_video.mp3</code></p>
  
  <p>Thank you in advance</p>
  
  <p>Toufik</p>