title: Which are the FLV supported audio types?
body: <p>I'm having issues with playing back some quick time files using actionscript 3.0 (<em>NetStream</em> class).</p>
  
  <p>I have no control on how the quick time files are produced, but it seems so far that the files with uncompressed audio do not play audio at all in Flash Player. </p>
  
  <p>I'm trying to compile a list of audio formats using video(mov/flv/etc.) in Flash Player, but I'm confused by the resources.</p>
  
  <p>I've look through the <a href="http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf" rel="nofollow">FLV Format Specs</a>(<em>pdf link</em>) on devnet and the media types listed there are:</p>
  
  <blockquote>
    <p><strong>MP3</strong> A media type of .mp3 (0x2E6D7033)
    indicates that the track contains MP3
    audio data. The  dot character, hex
    0x2E, is included to make a complete
    four-character code.  </p>
    
    <p><strong>AAC</strong> A media type
    of mp4a (0x6D703461) indicates that
    the track is encoded with AAC audio. 
    Flash Player supports the following
    AAC profiles, denoted by their object
    types: 
    - 1 = main profile 
    - 2 = low complexity, a.k.a. LC<br>
    - 5 = high efficiency/scale band replication, a.k.a. HE/SBR  When the
    audio codec is AAC, an esds box occurs
    inside the stsd box of a sample table.
    This box contains initialization data
    that an AAC decoder requires to decode
    the stream.  See ISO/IEC 14496-3 for
    more information about the structure
    of this box.</p>
  </blockquote>
  
  <p>On the <a href="http://en.wikipedia.org/wiki/Flash_Video#Format_details" rel="nofollow">wikipedia entry</a>, there is a mention on uncompressed audio:</p>
  
  <blockquote>
    <p>FLV files also support uncompressed
    audio or ADPCM format audio.</p>
  </blockquote>
  
  <p>but there is no reference for that statement. </p>
  
  <p>Is there a page that lists all the supported audio formats for playing back video in Flash Player ?</p>