(ConsolePipelineTester.exe:6464): GStreamer-CRITICAL **: UDPSRC AUDIO PIPELINE: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed

[mapcol]

I try to run this pipeline starting from udpsrc up to udpsink on Visual
Studio 2013 but I can't make it work:

#include <gst\gst.h>
#include <gst\rtp\rtp.h>

#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <Windows.h>

GMainLoop* loop = NULL;
GstElement* pipe = NULL;

// patterns
const char* pattern_1 = "udpsrc port=5521 ! \"application/x-rtp,
media=(string)audio, payload=(int)96, clock-rate=(int)90000,
encoding-name=(string)L16\" !  rtpjitterbuffer ! rtpL16depay ! decodebin !
audioconvert ! audioresample ! autoaudiosink";

int main(int argc, char *argv[])
{

	gst_init(&argc, &argv);

	loop = g_main_loop_new(NULL, FALSE);

	pipe = gst_parse_launch(pattern_1, NULL);
	if (pipe == NULL)
		std::cout << "Pipeline failed" << std::endl;
	else
		std::cout << "Pipeline correct" << std::endl;
	g_main_loop_run(loop);

	gst_element_set_state(pipe, GST_STATE_PLAYING);
	
	system("pause");
	return 0;
}

But I get the following error on the conosle:

*(ConsolePipelineTester.exe:6464): GStreamer-CRITICAL **:
gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed
Pipeline correct*

Does anyone know how to solve this? practically I'm not able to receive udp
streaming



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