title: ffmpeg error convertimg mkv to mp4
body: <p>I do this:</p>
  
  <pre><code> ffmpeg -i "film.mkv" -strict experimental film.mp4
  </code></pre>
  
  <p>I get this:</p>
  
  <pre><code>[matroska,webm @ 0x29fb0e0] Read error at pos. 93417 (0x16ce9)
  </code></pre>
  
  <p>the file itself is playable and ok, but how can I fix this? or at least see the reason why it is reporting this, any clues?</p>