RTSP from camera doen't work

[celti...@gmail.com]

Hi, i'm trying Streaming Plugin to stream rtsp url from a camera directly to web browser. I have read a lot of threads on this group about this, but still it doens't work to me. I have set the STUN google in the janus cfg. This is the situation in the streaming plugin cfg:

[rtsp-test]

type = rtsp

id = 99

description = RTSP Test

audio = no

video = yes

url=rtsp://cameraipaddr/live3.sdp

rtsp_user=myusername

rtsp_pwd=mypassword

videofmtp=packetization-mode=1\;profile-level-id=4d001e\;sprop-parameter-sets=J00AHpY1AUBf8s3BQYFQAAA+kAAOpgm+oA==,KO4EYg==

this is the sdp provided from the camera:

v=0

o=RTSP 1531738802 681 IN IP4 0.0.0.0

s=RTSP server

c=IN IP4 0.0.0.0

t=0 0

a=charset:Shift_JIS

a=range:npt=0-

a=control:*

a=etag:1234567890

m=video 0 RTP/AVP 98

b=AS:0

a=rtpmap:98 H264/90000

a=control:trackID=3

a=x-onvif-track:trackID=3

a=fmtp:98 packetization-mode=1; profile-level-id=4d001e; sprop-parameter-sets=J00AHpY1AUBf8s3BQYFQAAA+kAAOpgm+oA==,KO4EYg==

m=application 0 RTP/AVP 107

a=control:trackID=12

a=rtpmap:107 vnd.onvif.metadata/90000

When i start janus, from the log i can see:

-----------------------------------------------------------------------------

[WARN] RTSP video latching: 0.0.0.0:5556

[WARN]   -- RTCP: 0.0.0.0:5557

JANUS Streaming plugin initialized!

Transport plugins folder: /opt/janus/lib/janus/transports

Loading transport plugin 'libjanus_http.so'...

HTTP webserver started (port 8088, /janus path listener)...

-----------------------------------------------------------------------------

and every 5 seconds there is this message from the console:

-----------------------------------------------------------------------------

[WARN] [rtsp-test] 5s passed with no media, trying to reconnect the RTSP stream

[WARN] RTSP video latching: 0.0.0.0:5556

[WARN]   -- RTCP: 0.0.0.0:5557

[rtsp-test] Reconnected to the RTSP server, streaming again

-----------------------------------------------------------------------------

and from the web demo of the streaming plugin i receive this error:

"WebRTC error: DOMException: Failed to set remote offer sdp: Failed to set remote video description send parameters."

what am i doing wrong? problems with the codec? udp/tcp packets blocked by some firewall? i don't even know where to start from to investigate.

Let's pick an example:

i can see this webcam rtsp://85.255.175.244/h264 with vlc, and with another software that streams rtsp to webrtc, while janus gives me back those errors above.

can someone enlight me?

[Lorenzo Miniero]

Most definitely problems in the codecs you (or the camera) put in the SDP, as that's the error Chrome throws when it doesn't like what it finds.

L. 

[celti...@gmail.com]

That was what i thought, so i checked the streaming codec and i found out what codec it was. What do i have to change in janus to work with it? Profile number and videomtp? Can you vive me some advice looking at the rtsp url i wrote?

[Lorenzo Miniero]

The port in the video mline is 0, that's likely what's breaking the SDP: m=video 0 RTP/AVP 98

L.