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Thread: Multiple audio tracks in and out

  1. #1
    Join Date
    Sep 2013
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    3

    Question Multiple audio tracks in and out

    Hi,
    I have a multicast feed with multiple audio tracks.
    I would like to create an HLS from that, and get the different audio tracks in my TS chunks.
    Is that possible using Wowza? If so, how can it be done?

    I have seen there is a similar thread on the forum, but I couldn't find an answer to my issue.

    Thanks.

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    You can select one audio (and one video track if you had that) following this guide

    Richard

  3. #3
    Join Date
    Sep 2013
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    3

    Default

    Hi Richard, and thanks for your quick reply.
    I have seen this guide and tried something like this: udp://230.0.0.149:1000?videoPID=0x64&audioPID=0x65&audioPID=0x66
    But I still have only one audio PID in the chunks.
    Can't I have all of them?

  4. #4
    Join Date
    Dec 2007
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    Default

    Wowza only packetizes one video and one audio track. Can you do something with multiple tracks in a HLS chunk?

    Richard

  5. #5
    Join Date
    Sep 2013
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    3

    Default

    I wanted to have an HLS stream where I could have multiple audio tracks, and change audio tracks seamlessly.
    I know it's possible to have different profiles, and have each profile contain one track. But that implies that when you want to change the audio track, you need to change the profile. So it's not as seamless as I wanted it to be.

  6. #6
    Join Date
    Dec 2007
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    You can set up ABR (Adaptive Bit Rate) streaming with multiple audio streams at different bit rates, where the player chooses the appropriate bit rate rendition to use. Switching should be seamless, but controlled by the player. There is not a way that I know of to switch between audio tracks in a single stream with multiple audio tracks by user action in the client.

    Richard

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