Configure an RTP jitter buffer and packet loss logging (RTP/MPEG-TS over RTP)

Wowza Streaming Engine
1

To turn on an RTP jitter buffer and to log packet loss add the following properties to the RTP/Properties section of [install-dir]/conf/[application]/Application.xml

<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>10</Value>
	<Type>Integer</Type>
</Property>
<Property>
	<Name>rtpDePacketizerPacketSorterLogPacketLoss</Name>
	<Value>true</Value>
	<Type>Boolean</Type>
</Property>

  • rtpDePacketizerPacketSorterBufferTime: Size in milliseconds of the jitter buffer. This time will add to the overall latency of the live stream.

  • rtpDePacketizerPacketSorterFlushTime: Time in milliseconds the buffer will be flushed.

  • rtpDePacketizerPacketSorterLogPacketLoss: Set to true if you want packet loss to be logged to the Wowza Pro log file.

    Charlie

    Edit: For Wowza 3.x use the updated article here: https://www.wowza.com/docs/how-to-turn-on-an-rtp-jitter-buffer-and-packet-loss-logging-rtp-and-mpeg-ts

2

Try following the first suggestion in this forum post:

http://community.wowza.com/t/-/57

Charlie

3

Hi,

I am trying out livestreamrecording using fastvdo smartcast.It works fine.I have one question,when i do the recording for say 4-5 hrs then i am facing audio and video will be out of sync meaning audio ahead of video.Is it due to bandwidth or i need to do some extra settings in Application.xml?

4

Thanks.I will try it and post how it goes.