title: dcmj2pnm error: cannot change to unencapsulated representation for pixel data
body: <p>I am trying to use the DCMJ2PNM binary from the DCMTK toolkit to convert a DICOM file to a set of BMPs. I am using the following command:</p>
  
  <pre><code>  dcmj2pnm +Fa +ob test.dcm .\frames\test_
  </code></pre>
  
  <p>I keep getting the error <strong>"cannot change to unencapsulated representation for pixel data"</strong>. Does anyone know what I can do to process this image? </p>