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Thread: Jitter buffer for a liverepeater

  1. #1

    Default Jitter buffer for a liverepeater

    Hello forum,

    We have some jitter on our network which Wowza doesn't like too much. We can get RTP/UDP traffic to work with the following:

    <Property>
    <Name>rtpDePacketizerWrapper</Name>
    <Value>com.wowza.wms.rtp.depacketizer.RTPDePacketizerWrapperPacketSorter</Value>
    </Property>
    <Property>
    <Name>rtpDePacketizerPacketSorterBufferTime</Name>
    <Value>500</Value>
    <Type>Integer</Type>
    </Property>
    <Property>
    <Name>rtpDePacketizerPacketSorterFlushTime</Name>
    <Value>0</Value>
    <Type>Integer</Type>
    </Property>
    <Property>
    <Name>rtpDePacketizerPacketSorterLogPacketLoss</Name>
    <Value>true</Value>
    <Type>Boolean</Type>
    </Property>
    The problem is that it appears as though that same code does not apply to the RTMP/TCP Liverepeater traffic that we have between Wowza servers. Is there a similar set of config changes I can apply to my application to apply jitter buffer for a RTMP/TCP Liverepeater stream?

    Thanks,

    Benjamin

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

    Default

    Benjamin,

    What are you seeing? Is bitrate a factor?

    Richard

  3. #3

    Default

    Out of order frames. We are working the network issue concurrently, but would love to have pad on the Wowza server side too, and the RTP/UDP buffer adds latency but also makes the video buttery smooth. Would love to do that for our RTMP/TCP traffic too. It looks like the TCP/UDP packets are streaming out of order. This is happening to all TCP/UDP traffic, not just Wowza traffic so we know that part is the network. The actual available bandwidth itself is fine. We have scary large bandwidth barely being used.

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

    Default

    Remember that bandwidth between a client and your Wowza server is a function of many factors. This is where bitrate vs bandwidth issues create choppy playback, if that is what you are seeing. The BWCheck example shows the bitrate at a client

    Richard

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