title: java: package does not exist error only after build
body: <p>I'm trying to add the JCodec library to my android studio project. I followed the steps listed <a href="https://stackoverflow.com/questions/20520705/using-jcodec-sequenceencoder/20630238#20630238?newreg=eec72a328c5142de92d21479b0835a43">here</a>. I import these four lines:</p>
  
  <pre><code>    import org.jcodec.codecs.h264.H264Decoder;
      import org.jcodec.common.AndroidUtil;
      import org.jcodec.common.model.ColorSpace;
      import org.jcodec.common.model.Picture;
  </code></pre>
  
  <p>I get no errors until I build my project. When I build the project, I get an error that each of the packages I tried to import don't exist. Does anyone know what the problem is?</p>
  
  <p>Thanks!</p>