Change the AAC packetization method

Wowza Streaming Engine can use the mpeg4-generic or mp4a-latm (3gpp) packetization method to output AAC audio. The default packetization method is mpeg4-generic.

Configure mp4a-latm packetization using Wowza Streaming Engine Manager


  1. Click the Applications tab and then select your live application in the contents panel.
     
  2. On the live application page Properties tab, click Custom in the Quick Links bar or scroll to the bottom of the page.
     
    Note: Access to the Properties tab is limited to administrators with advanced permissions. For more information, see Manage credentials.
  3. In the Custom area, click Edit.
     
  4. Click Add Custom Property, specify the following settings in the Add Custom Property dialog box, and then click Add:
     
    • Path – Select /Root/Application/RTP.
       
    • Name – Enter audioPacketizerAAC.
       
    • Type – Select String.
       
    • Value – Enter com.wowza.wms.rtp.packetizer.RTPPacketizerMPEG4LATM.
  5. Click Save, and then restart the live application to apply the changes. 

Configure mp4a-latm packetization in XML


  1. Navigate to [install-dir]/conf/[application] and open Application.xml in a text editor.
  2. Add the audioPacketizerAAC property to the <RTP> container element. The XML looks like this:
    <RTP>
        ...
        <Properties>
            <Property>
                <Name>audioPacketizerAAC</Name>
                <Type>String</Type>
                <Value>com.wowza.wms.rtp.packetizer.RTPPacketizerMPEG4LATM</Value>
            </Property>
        </Properties>
    <RTP>
  3. Restart Wowza Streaming Engine or Wowza Media Server.