# Packet loss - what can i do ??

**URL:** <https://community.wowza.com/t/packet-loss-what-can-i-do/45743>\
**Category:** Wowza Streaming Engine\
**Created:** [August 24, 2015, 1:45am UTC](https://community.wowza.com/t/packet-loss-what-can-i-do/45743 "2015-08-24T01:45:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![JongYoul\_Park](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@JongYoul\_Park](https://community.wowza.com/u/JongYoul_Park)\
**Post date:** [August 24, 2015, 1:45am UTC](https://community.wowza.com/t/packet-loss-what-can-i-do/45743/1 "2015-08-24T01:45:05Z")

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hi, guys

i use RTSP/RTP streaming.

sometimes i meet packet loss.

WARN server comment 2015-08-24 01:15:05 - - - - - 338263.513 - - - - - - - - **RTPDePacketizerWrapperPacketSorter.packetLoss** [live/_definst_/1000:trackID=0]: **last:551 curr:1170**

so, i check any method…

[https://www.wowza.com/docs/how-to-turn-on-an-rtp-jitter-buffer-and-packet-loss-logging-rtp-and-mpeg-ts](https://www.wowza.com/docs/how-to-turn-on-an-rtp-jitter-buffer-and-packet-loss-logging-rtp-and-mpeg-ts)

[https://www.wowza.com/docs/how-to-fix-udp-packet-loss-mpeg-ts-rtp](https://www.wowza.com/docs/how-to-fix-udp-packet-loss-mpeg-ts-rtp)

but, i still have same trouble.

what can i do another action?

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**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\
**Post date:** [August 23, 2015, 2:15pm UTC](https://community.wowza.com/t/packet-loss-what-can-i-do/45743/2 "2015-08-23T14:15:23Z")

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Is it possible you have another encoder on the same network pushing packets for the same channels, which could be causing a conflict? This behavior makes it look like some streams are losing packets.

Do you see multiple errors like this:

```auto
server WARN 200 - RTPDePacketizerWrapperPacketSorter.packetLoss\[live/_definst_/streamOne.sdp:trackID=2\]: last:13066 curr:25584    
server WARN 200 - RTPDePacketizerWrapperPacketSorter.packetLoss\[live/_definst_/streamTwo.sdp:trackID=1\]: last:63732 curr:14634 

```

Another troubleshooting tip: Note the big discrepancy between the last and current values. If RTP, the values should be similar. The packet sorter only works if the stream is RTP. We use a sequence number in the RTP header to do packet re-ordering. Because the numbers are so far apart, it most likely means that the stream in question isn’t RTP. Possibly the stream(s) that are causing these issues are MPEG-TS that aren’t RTP-wrapped.

Regards,

Salvadore

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**Author:** ![Michelle\_B](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/michelle_b/32/394_2.png) [@Michelle\_B](https://community.wowza.com/u/Michelle_B)\
**Post date:** [December 9, 2015, 4:31pm UTC](https://community.wowza.com/t/packet-loss-what-can-i-do/45743/3 "2015-12-09T16:31:49Z")

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Hi,

If you have not done so, please do [send a support request](https://www.wowza.com/support/open-ticket) with a zip copy of your Wowza conf/logs, since as Salvadore pointed out, the last and current values in the RTPDePacketizer is pointing to an issue in how your encoder’s stream is being recognized in your Wowza server.

Michelle

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**Author:** ![JongYoul\_Park](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@JongYoul\_Park](https://community.wowza.com/u/JongYoul_Park)\
**Post date:** [August 25, 2015, 1:09am UTC](https://community.wowza.com/t/packet-loss-what-can-i-do/45743/4 "2015-08-25T01:09:23Z")

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Thanks, salvadore.

but I use only one stream and channel.

and I definitely use RTP.