title: Trying to convert 200 jpg files to an mp4 w/ ImageMagick. Receiving the same error over and over again
body: <p>I'm trying to convert 200 .jpg files that were .ppm files into one .mp4 file.</p>
  
  <p>In the same directory as the .jpg files, I ran this code:</p>
  
  <pre><code>convert -delay 6 -quality 95 test*ppm movie.mp4
  </code></pre>
  
  <p>and received this error message:</p>
  
  <pre><code>convert: no images defined `movie.mp4' @ error/convert.c/ConvertImageCommand/3210.
  </code></pre>
  
  <p>What caused this error?</p>