title: Non-linear video editing tool/API?
body: <p>Can anyone recommend a good library that would enable me to write an application that can blend multiple input videos into one output video (for example into a split screen).</p>
  
  <p>I don't care about the programming language (C, C++, Java, Ruby and Python are fine).</p>
  
  <p>The only one I found is GStreamer with the non-linear plugins. But I can't find documentation on how to use the non-linear plugins. So I'd be glad to use an alternative.</p>