# Start Forward RTP Videoroom Multistream

**URL:** <https://janus.discourse.group/t/start-forward-rtp-videoroom-multistream/1347>\
**Category:** Janode\
**Created:** [November 5, 2024, 9:50am UTC](https://janus.discourse.group/t/start-forward-rtp-videoroom-multistream/1347 "2024-11-05T09:50:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![thienz100](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@thienz100](https://janus.discourse.group/u/thienz100)\
**Post date:** [November 5, 2024, 9:50am UTC](https://janus.discourse.group/t/start-forward-rtp-videoroom-multistream/1347/1 "2024-11-05T09:50:22Z")

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I user videoroom and foward rtp to streaming plugin; I work ok in only stream ( 1 video, 1 audio);  
But when I add one video stream (mid = v2) ; It can’t forward to streaming.

I tried recording the video when creating the room (record = true) and realized it saved 2 video streams (v1, v2).  
I don’t understand what parameters I’m missing when relaying rtp like this;  
////  
const rtpstartdata = {  
room: confdata.room,  
feed: confdata.feed,  
video\_port\_2: 36468,  
video\_port: 40715,  
audio\_port: 5141,  
secret: ‘adminpwd’,  
host: “127.0.0.1”  
}  
const response = await janodeManagerHandle.startForward(rtpstartdata);  
///  
Looking forward to receiving your support, thanks for watching.

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<div class="post-metadata">

**Author:** ![atoppi](https://yyz2.discourse-cdn.com/free1/user_avatar/janus.discourse.group/atoppi/32/8_2.png) [@atoppi](https://janus.discourse.group/u/atoppi)\
**Post date:** [November 5, 2024, 10:50am UTC](https://janus.discourse.group/t/start-forward-rtp-videoroom-multistream/1347/2 "2024-11-05T10:50:20Z")

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If you’re trying to forward a multistream (aka multi m-lines / mids) feed, then you need to use the `streams` attribute of the request. The `video_port_2` is for (legacy API) simulcasting.

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<div class="post-metadata">

**Author:** ![thienz100](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@thienz100](https://janus.discourse.group/u/thienz100)\
**Post date:** [November 6, 2024, 2:26am UTC](https://janus.discourse.group/t/start-forward-rtp-videoroom-multistream/1347/3 "2024-11-06T02:26:24Z")

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Thank you very much; It’s work ok;

This is new rtpBody for somebody meet encountered similar problem  
rtpstartdata {  
room: 684271495053527,  
feed: 1776201763580449,  
secret: ‘adminpwd’,  
host: ‘127.0.0.1’,  
streams: [  
{  
type: ‘video’,  
mindex: 0,  
mid: ‘0’,  
codec: ‘vp9’,  
vp9\_profile: ‘0’,  
port: 40715  
},  
{  
type: ‘audio’,  
mindex: 1,  
mid: ‘1’,  
codec: ‘opus’,  
fec: true,  
port: 11779  
},  
{  
type: ‘video’,  
mindex: 2,  
mid: ‘2’,  
codec: ‘vp9’,  
vp9\_profile: ‘0’,  
port: 36468  
}  
]  
}