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    Multi-Language Audio

    This feature allows ingesting multiple audio languages, descriptive or ambient audio experience tracks to be available for live playback.


    • Define the PID (Packet Identifier) for each audio track in your encoder.
    • At this moment, only the RTP input format is supported. For this section to be enabled in the Create Live Event page, go to the ADVANCED OPTIONS section and select Real-Time Transport Protocol (RTP) under the Input Format selector.
    • In the CIDR Whitelist section, enter the IP: to connect to the RTP endpoint. The Multi-Language button will be disabled if the Input Format is not set to RTP.

    Adding Audio Tracks to a Live Event

    When creating a new Live event:

    1. Open the Audio Tracks section.
    2. Click the Add Audio Tracks button.
    3. Fill in the fields to add a new Audio track. Fields with an asterisk (*) are required.
      • Default: Select which audio track is the default.
      • Language*: Type the language code of the new audio track. Example: en, es, cy-GB, etc.
      • PID*: Enter the PID code previously defined in your Encoder to sync the audio tracks in your incoming stream to the correct language and variant. Note: Unique PID's are required for each audio track.
      • Variant: Represents the variant of the audio track. These can be: main, commentary, alternate, caption, subtitle, supplementary, dub.
      • Label: Type a name for the track. Example: English, Spanish etc. Note that ff the label field is left empty, the language code will be used as a label.
    4. By clicking on the + and - buttons, you can add or remove audio tracks.

    Changing the Audio Track

    1. If the multi-audio tracks were set up correctly, the player will have a headphone icon that can be used to switch between tracks.

    Page last updated on 15 Jan 2021