Questions about Videoroom rtp_forward feature

[Davide Caldelari]

Hi,

I use the videoroom plugin to send to FFMPEG the webRTC stream from one of the publishers. With wireshark, I noticed some packets which I cannot understand:

The "normal" packets from the rtp_forward are, I think,  like this one:

... 192.168.1.134 192.168.1.126 RTP 51635 60010 1061 PT=DynamicRTP-Type-96, SSRC=0x3FF3735, Seq=50176, Time=24951420

Basically, I stream video to port 60010. But I have also packets like this one (which, I suppose, Wireshark identifies as Skype packets):

... 192.168.1.134 192.168.1.126 SKYPE 51635 60010 1207 Fragment/Forward/Resend Unk: c

[...]

... 192.168.1.134 192.168.1.126 SKYPE 51635 60010 1219 Payload Unk: c

[...]

... 192.168.1.134 192.168.1.126 SKYPE 51635 60010 1126 Unknown_0 Unk: c

[...]

... 192.168.1.134 192.168.1.126 SKYPE 51635 60010 1062 Audio Unk: b

What exactly are these? Where are they from? Are they correct? Or is there something wrong?

The rtp_forward object is so configured:

{
"request": "create",
"record": false,
"publishers": 2,
"fir_freq": 1,
"videocodec": "vp8,h264",
"room": "myroom",
"bitrate": 0
}

I asked this because i have some problems with FFMPEG which sometimes works very well and sometimes must be restarted because there are a lot of errors. 

Please note that I'm streaming in the same subnet, so there shuldn't be any network issues (shouldn't...).

Thank you very much in advance for any help.

Davide

[lmin...@gmail.com]

Very likely Wireshark misinterpreting packets. Force a decode as RTP packet on the stream.

Lorenzo