I run into the following error when I try to use the vtkAVIWriter<br><br>ERROR: In ..\..\IO\vtkAVIWriter.cxx, line 173<br>vtkAVIWriter (0FDA7C18): Unable to compress test.avi<br><br>My code works fine for the default &quot;msvc&quot; codec.<br>
<br>writer =  vtkAVIWriter::New();<br>        <br>  w2i=vtkWindowToImageFilter::New();<br>  w2i-&gt;SetInput(renderWindowROI);//the render window<br>  writer-&gt;SetInputConnection(w2i-&gt;GetOutputPort());<br>  writer-&gt;SetFileName(&quot;test.avi&quot;);<br>
  writer-&gt;SetQuality(2.0);<br>  writer-&gt;SetRate(2);<br>  writer-&gt;SetCompressorFourCC(&quot;h264&quot;);<br><br>  writer-&gt;Start();<br><br>I am running in 32 bits windows environment. Would appreciate any insights into getting<br>
this to run.<br><br>Imran<br>