title: FFMPEG convert webm to mp4 not working
body: <p>I have upgrade to the latest ffmpeg which supports webm, but I can't seem to convert webm to mp4</p>
  
  <pre><code>ffmpeg -i filea.webM -sameq filea.flv
  </code></pre>
  
  <p>I am getting this error</p>
  
  <pre><code>swScaler: Unknown format is not supported as input pixel format
  Cannot get resampling context
  </code></pre>
  
  <p>I am not sure what to do.</p>