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Thread: Wowza nDVR playlist request API parameters

  1. #1
    Join Date
    Nov 2014
    Posts
    6

    Default Wowza nDVR playlist request API parameters

    Hello,
    I'm using wowza built in com.wowza.wms.dvr.impl.DvrStartDurationPlaylistRequestDelegate for selecting a portion of recorded stream. I'm a little confused here because I'm not getting the expected result when passing a query. Can anyone elaborate what does wowzadvrplayliststart parameter do? For example, if I want to play the content from the beginning through some duration can I always use 0 or does it shift with the recording window?

  2. #2
    Join Date
    Jun 2012
    Posts
    723

    Default

    Hello,

    The nDVR recording window is using a sliding window concept. So, if you have configured your nDVR to use a 1h recording window, this means that if you make a playback request using the playlist request delegate at 2:00 pm, and the wowzadvrplayliststart parameter is set to 0, this means that your player should start playing back the content recorded at 1:00 pm.
    Since the recording is a sliding window, and old nDVR chunks are deleted while new nDVR chunks are created, if you use the same nDVR playback URL (having the wowzadvrplayliststart parameter set to 0) to start a stream at 2:15 pm, the content being streamed to the player would be the one recorded at 1:15 pm, because that is the start of your recording window at that particular time.

    Zoran

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