# How to Using Multicast vie RTSP using PushPublish modular

**URL:** <https://community.wowza.com/t/how-to-using-multicast-vie-rtsp-using-pushpublish-modular/39842>\
**Category:** Wowza Streaming Engine\
**Created:** [December 19, 2013, 2:40pm UTC](https://community.wowza.com/t/how-to-using-multicast-vie-rtsp-using-pushpublish-modular/39842 "2013-12-19T14:40:11Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jarry\_Huang](https://avatars.discourse-cdn.com/v4/letter/j/dec6dc/32.png) [@Jarry\_Huang](https://community.wowza.com/u/Jarry_Huang)\
**Post date:** [December 19, 2013, 2:40pm UTC](https://community.wowza.com/t/how-to-using-multicast-vie-rtsp-using-pushpublish-modular/39842/1 "2013-12-19T14:40:11Z")

</div>

Hi.

I configured pushpublish modular to restream a wowza stream to other CDN systems.

I’ve successed configuring a MPEGTS vie udp multicast stream, using this setting in PushPublishMap.txt:

100.stream={profile:“mpegts”, streamName:“100.stream”, host:“239.1.1.11”, port:10000, rtpWrap:false}

And I can play in VLC using udp://@239.1.1.11:10000 . It is a multicast stream.

I’ve failed to configure a native RTSP stream using multicast stream.

Setting in PushPublishMap.txt is:

100.stream={profile:“rtp”, streamName:“myStreamRTP”, host:“239.1.1.12”, videoPort:10002, audioPort:10004}.

The 100.steam is correct and can be played using this address:rtsp://IP:1935/dvr/_definst_/100.stream .

There is a SDP file generated in forlder applications\dvr\sdp named 100.stream\_destination.sdp. And VLC can play this SDP file.

But VLC cannot play any address like this:

rtsp://IP:1935/dvr/_definst_/myStreamRTP

How can I play a rtsp stream using multicast?

Best regards.

---

<div class="post-metadata">

**Author:** ![Zoran](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/zoran/32/385_2.png) [@Zoran](https://community.wowza.com/u/Zoran)\
**Post date:** [December 19, 2013, 1:27pm UTC](https://community.wowza.com/t/how-to-using-multicast-vie-rtsp-using-pushpublish-modular/39842/2 "2013-12-19T13:27:46Z")

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Hi,

Can you try playing back the stream using this URL?

```auto
rtsp://IP:1935/dvr/_definst_/myStreamRTP?multicastplay

```

Zoran

---

<div class="post-metadata">

**Author:** ![Jarry\_Huang](https://avatars.discourse-cdn.com/v4/letter/j/dec6dc/32.png) [@Jarry\_Huang](https://community.wowza.com/u/Jarry_Huang)\
**Post date:** [December 20, 2013, 9:13am UTC](https://community.wowza.com/t/how-to-using-multicast-vie-rtsp-using-pushpublish-modular/39842/3 "2013-12-20T09:13:39Z")

</div>

> Hi,
> 
> Can you try playing back the stream using this URL?
> 
> ```auto
> rtsp://IP:1935/dvr/_definst_/myStreamRTP?multicastplay
> 
> ```
> 
> Zoran

Hi Zoran:

Thank you for your reply.

I’ve tried to playback this url using VLC, I received this error.

```auto
Your input can't be opened:
VLC is unable to open the MRL 'rtsp://192.166.62.116:1935/dvr/_definst_/myStreamRTP?multicastplay'. Check the log for details.

```

And the log in wowza is :

```auto
INFO rtsp connect 25278661 -
INFO stream create - -
INFO stream unpublish - -
INFO stream destroy - -
INFO rtsp disconnect 25278661 -

```