• How to fix missing audio (MPEG-TS)

    This article describes how to configure your Wowza™ media server software to manage unaligned AAC packets that may be sent by some MPEG-TS-based encoders.

    You can configure application properties in Wowza Streaming Engine™ Manager or by editing [install-dir]/conf/[application]/Application.xml. If you make changes to Application.xml and you're using Wowza Streaming Engine media server software, any supported settings are displayed in the manager the next time it's started. Wowza Media Server™ software doesn't support Wowza Streaming Engine Manager, so you must edit Application.xml in a text editor if you're running Media Server software.

    Wowza Streaming Engine Manager configuration

    To manage unaligned AAC audio packets in Wowza Streaming Engine Manager:

    1. In the manager Welcome page, click the Applications tab at the top of the page.

    2. In the Applications contents panel, click the name of your live application (such as live).

    3. On the live application page Properties tab, click RTP Jitter Buffer in the Quick Links bar.

      Note: Access to the Properties tab is limited to administrators with advanced permissions. For more information, see Manage credentials.
    4. Click Edit in the RTP Jitter Buffer properties area, select the Enabled check box next to mpegtsAudioIsAligned and ensure the property is set to False.

    5. Click Save, and then restart the application when prompted to apply the changes.

    XML configuration

    To manage unaligned AAC audio packets in Application.xml:

    1. Use a text editor to open the [install-dir]/conf/[application]/Application.xml file for your live application and add the following property to the RTP/Properties container. Be sure to add the properties to the correct <Properties> container in Application.xml as there are several such containers in the file.

      Wowza Streaming Engine
      Wowza Media Server
    2. Restart the Wowza media server software to apply the changes.

    Updated: For Wowza Streaming Engine 4.0 on 12-04-2014.

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