Take this address for example,![](https://www.longse.com/uploadfile/2017/0829/rtsp%20address_20170829053318469.png)
So the RTSP address of channel 13 sub-stream is
rtsp://admin:1@183.233.190.41:8950/121
the RTSP address of channel 2 main-stream is
rtsp://admin:1@183.233.190.41:8950/10
If none of these resolve the issue please write us at online support.