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Thread: extract audio stream from live stream

  1. #1

    Default extract audio stream from live stream

    Hi,
    Is there any option to extract audio stream from live stream. i have 2 live streams one is audio and other is video but the content is same. If there any option to extract audio stream from video live stream, then we need only one encoder to encode the stream. Any help will be appreciated.

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

    Default

    You can use Wowza Transcoder, configure an Encode with Video set to "Disable"

    http://www.wowza.com/forums/content....wza-Transcoder

    For iOS only, you can use this technique:
    http://www.wowza.com/forums/content....pStore-64Kbps)

    Richard

  3. #3

    Default

    But i am using wowza 2.2.4. is this version support Wowza Transcoder ?

  4. #4
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    No, sorry, there is only the iOS method in 2.2.4

    Richard

  5. #5

    Default

    There are other ways to get both an A/V stream and an audio-only stream.

    1. Use ffmpeg. Input 1 stream, send 2 streams to Wowza, one of which is audio-only.
    2. Use Wowza 3.0.5+. You can turn off audio or video tracks in your Application.xml.

    I have tested it and it works, like so:
    1. Publish FMLE stream named "myStream" to Wowza "live" application.
    2. Create a new live application called "livenovideo".
    3. Turn off video the Application.xml for the "livenovideo" application.
    4. Create a live.stream file containing "rtsp://localhost:1935/live/myStream
    5. Use StreamManager to start "live.stream" on application "livenovideo."

    Playback audio+video:
    rtmp://[Wowza-IP]/live/myStream

    Playback audio only:
    rtmp://[Wowza-IP]/livenovideo/live.stream


    vineethkdlr, you can upgrade to Wowza 3 for free.
    Last edited by randall; 05-30-2012 at 02:44 AM.

  6. #6
    Join Date
    Sep 2011
    Posts
    1,934

    Default

    Hi
    I think you can also do this with a module that can be found here,
    http://www.shamrock.org.uk/WowzaModules/AudioRepeater/

    Jason

  7. Default

    Couldn't you also do this by defining a new stream type using a class that extends mediastreamlive, and not pass the video data to the superclass?

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