title: onMetaData marker in FLV file
body: <p>I wanna know how the <code>onMetaData</code> marker in FLV files looks like.  When i open FLV files as plain text I get this:</p>
  <pre><code>FLV[][][][][](TAB)[][][][][][][]8[][][][][][][][][]  
  onMetaData[]  
  duration...   
  </code></pre>
  <p>The docs say the first 3 bytes are the signature &quot;FLV&quot; the next byte tells the flv version, the next byte is telling us if audio or video tags are present, the next 4 bytes are the data-offset(the size of the header), which is 9, in ascii its the TAB code. after the TAB starts the body with the fist &quot;previous tag size field&quot; which is 0(4 bytes) next, there is the Tag Type (1 byte) the data size (3 bytes) and the timestamp (4 bytes) the stream id (always 0, 3bytes). After that remains:</p>
  <pre><code>[]  
  onMetaData[]  
  [][][][][][]  
  duration...
  </code></pre>
  <p>I suppose the <code>onMetaData</code> marker is &quot;1byte, newline&quot;onMetaData&quot;1byte,newline) but what are the 7 bytes between <code>onMetaData</code> marker and <code>duration</code>?</p>