title: Combine filter complex
body: <p>I have two commands who works fine, but when i try to combine them they didn't work.</p>
  
  <pre><code>... -filter_complex "[0:v]crop=200:200:60:30,boxblur=10[fg]; [0:v][fg]overlay=60:30[v]" -map "[v]" -map 0:a  ......
  
  .... -vf drawtext="fontfile=/usr/share/fonts/webcore/comic.ttf: text='text here': x=(main_w/2-text_w/2): y=main_h-(text_h*2): fontsize=20: fontcolor=white" ........
  </code></pre>
  
  <p>please do not refer to other pages because i already tried everything and nothing worked for me.</p>