Access mjpeg-streamer in OpenCV 3.0 - c++

Question

I have a raspberry pi b+ uploading a video stream with the mjpeg-streamer.
On the Raspberry Pi
/usr/local/bin/mjpg_streamer -i "/usr/local/lib/input_uvc.so -y -r 340x240 -f 10 -d /dev/video0" -o "/usr/local/lib/output_http.so -w /usr/local/www"
This creates a video stream accessible by
http://10.1.111.150:8080/?action=stream
making a jpeg image ->
Live stream on the firefox browser
Now, what I would like to do is open this stream with OpenCV 3.0.0 in Visual Studio 2013.
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char* argv[])
{
int q;
VideoCapture cap;
//cap.open(0) for internal camera
//
cap.open("http://10.1.111.150:8080/?action=stream");
if (!cap.isOpened()) // if not success, exit program
{
cout << "Cannot open the video cam" << endl << "Press q to continue:";
cin >> q;
return -1;
}
double dWidth = cap.get(CV_CAP_PROP_FRAME_WIDTH); //get the width of frames of the video
double dHeight = cap.get(CV_CAP_PROP_FRAME_HEIGHT); //get the height of frames of the video
cout << "Frame size : " << dWidth << " x " << dHeight << endl;
namedWindow("MyVideo", CV_WINDOW_AUTOSIZE); //create a window called "MyVideo"
namedWindow("MyNegativeVideo", CV_WINDOW_AUTOSIZE);
while (1)
{
Mat frame;
Mat contours;
bool bSuccess = cap.read(frame); // read a new frame from video
if (!bSuccess) //if not success, break loop
{
cout << "Cannot read a frame from video stream" << endl;
break;
}
flip(frame, frame, 1);
imshow("MyVideo", frame); //show the frame in "MyVideo" window
Canny(frame, contours, 500, 1000, 5, true);
imshow("MyNegativeVideo", contours);
if (waitKey(30) == 27) //wait for 'esc' key press for 30ms. If 'esc' key is pressed, break loop
{
cout << "esc key is pressed by user" << endl;
break;
}
}
return 0;}
This is an example code that works to open the internal webcam on my laptop when I usecap.open(0)
But trying to open the ip camera from its addresscap.open("http://10.1.111.150:8080/?action=stream");
is not working.
UPDATE
I've made some changes on the RPi by running
/usr/local/bin/mjpg_streamer -i "/usr/local/lib/input_uvc.so -y -r 340x240 -f 10 -d /dev/video0" -o "/usr/local/lib/output_rtsp.so -p /usr/local/www"
the difference being the output_rtsp.so -p
By the looks the webcam (active light is on) and the program running in the raspberry pi's terminal, I can assume the stream is working. I can't confirm this through a browser though.
Running
cap.open("rtsp://10.1.111.150:8080/?action=stream");
in the openCV code does not open the stream.
Can anyone tell me where I'm going wrong?