title: ffmpeg error mb_type 7802 in P slice too large at 50 35kbps
body: <p>When I decode a <code>h264 rtmp</code> stream with <code>ffmpeg</code> I am getting the following error in the console:</p>
  
  <p><code>[h264 @ 02c3af20] mb_type 7802 in P slice too large at 50 35kbps
  [h264 @ 02c3af20] error while decoding MB 50 35</code></p>
  
  <p>ffmpeg can't play my <code>h264 rtmp</code> stream but if I en-decode <code>vp6 rtmp</code> stream there is no problem. Why is this?</p>