title: ffmpeg udp to HLS error
body: <p>I try to transcode <strong>UDP</strong> stream to <strong>HLS</strong> (m3u8) file and put that file in a web server such as apache with this code:</p>
  
  <pre><code>ffmpeg -i udp://239.1.2.1:60001 -acodec aac -strict -2 -vcodec libx264 -hls_wrap 100 -f hls /var/www/html/ts/1.m3u8 
  </code></pre>
  
  <p>At first of trascoding progress i see a error </p>
  
  <pre><code>[h264 @ 0x14c1c60] number of reference frames (0+4) exceeds max (3; probably corrupt input), discarding one
  </code></pre>
  
  <p>But m3u8 file created successfully and i can play it in client. but after 2 or 3 minute i see some error</p>
  
  <pre><code>[h264 @ 0x158d600] error while decoding MB 30 34, bytestream -10 dup=101 drop=0 [mpegts @ 0x149c660] PES packet size mismatch
  [aac_latm @ 0x158daa0] Reserved SBR extensions is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  [aac_latm @ 0x158daa0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
  [aac_latm @ 0x158daa0] Expected to read 18 SBR bytes actually read 21.
  [aac_latm @ 0x158daa0] channel element 3.4 is not allocated
  Error while decoding stream #0:1: Invalid data found when processing input
  Last message repeated 1 times
  [udp @ 0x148c0c0] Circular buffer overrun. To avoid, increase fifo_size URL option. To survive in such case, use overrun_nonfatal option
  [h264 @ 0x158d600] error while decoding MB 41 20, bytestream -14 dup=102 drop=0    
  udp://239.1.2.1:60001: Input/output error
  </code></pre>
  
  <p>And stream stop immediately .... anybody know how i can solve this problem?</p>