RTSP no stream display

[Minh Tran]

Hello all,

I have success running the janus gateway. But the problem is that I no stream to display on the demo testing page. It always show the Loading Icon and nothing happened after that. I have edited the configuration file like below:

[rtsp-test]

type = rtsp

id = 99

description = RTSP Test

audio = no

video = yes

url=rtsp://192.168.1.54/user=admin_password=_channel=1_stream=0.sdp?real_stream

On the server side:

[WARN] HTTPS webserver disabled

[WARN] Admin/monitor HTTP webserver disabled

[WARN] Admin/monitor HTTPS webserver disabled

JANUS REST (HTTP/HTTPS) transport plugin initialized!

HTTP/Janus sessions watchdog started

Creating new session: 1486722975333764

Creating new handle in session 1486722975333764: 3255178289263739

[3255178289263739] Creating ICE agent (ICE Full mode, controlling)

[3255178289263739] The DTLS handshake has been completed

WebRTC media is now available

I don't know why it does not work. Please help me.

[Lorenzo Miniero]

You should check the RTSP exchange between the Janus Streaming plugin and the RTSP server to see if it succeeds. If Janus doesn't receive any media from the RTSP server (which can happen if RTSP failed), then it can't possibly send anything to clients and you'll get nothing displayed. Same if the codec the RTSP server uses is unsupported by browsers.

L.

[Minh Tran]

How can I check the exchange between them?

[Lorenzo Miniero]

Look at the traffic or the RTSP server logs, if any.

L.

[minhjirachi]

I think if I have problem with the RTSP exchange between them, I will see: "Couldn't send DESCRIBE request: Timeout was reached". Is it right?

[Lorenzo Miniero]

Such an output may be a sign of trouble, yes.

L.

[minhjirachi]

I have the log of the janus. I can see that no video packet both send and receive.

https://gist.github.com/anonymous/8f39d74f3a50463211ad439bf74b8922

I don't know how to fix this problem. Please check out my log.

[Lorenzo Miniero]

It's not a problem in Janus, so nothing I think we can debug there. You have to check why the RTSP communication with your server doesn't work. My guess is that we don't support the query string (the ?realstream part) but can't say for sure.

L.

[minhjirachi]

I think the problem from the Janus. Because I have test multiple rtsp link via: http://www.vlc.eu.pn/ . Most of those link was work fine with VLC. But when I add it to Janus Streaming Config, none of them work with Janus.

[Tirolock]

I wonder if this issue is related to the rtsp streaming plugin....

Correct me if I'm wrong but I think that this plugin uses GStreamer to get/distribute the rtsp feed.

I've had problems with GStreamer not working when given a rtsp feed from an ip camera. It worked just fine when using VLC.

Look at this issue on gstreamer's gitlab forum: https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/338#note_94778

I don't know what to say... if VLC can read a rtsp feed from a camera, what makes gstreamer unable to do the same?