title: ChromaKey FLV Transparency
body: <p>I have over 20000 FLV's at the moment. They currently have no alpha channel and are all CGI generated text on a black background.</p>
  
  <p><strong>My issue:</strong> 
  I need to be able to remove the black background and make it transparent, so I can use these videos to layer over pictures in my flash project.</p>
  
  <p>It needs to be an automated process, that can go through the whole dir of videos and remove the backgrounds</p>
  
  <p><strong>What I've tried?</strong></p>
  
  <p>I have spent the last three days pulling my hair out. Currently the option I see is to write a custom filter for ffmpeg. </p>
  
  <blockquote>
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  </blockquote>
  
  <p><strong>The end goal:</strong></p>
  
  <p>Layer the flv videos over randomly generated videos in an adobe air application built in flex. </p>