Video Streaming using C++ in OpenCV

[kcyeong92]

Hi @drejkim

Thanks for sharing this project.

Can I write C++ code in openCV to view the video streaming instead of using web browser?

The C++ coding that i wrote as follow:

include <opencv/cv.h>

include <opencv2/highgui/highgui.hpp>

include <opencv2/imgproc/imgproc.hpp>

include

include <stdio.h>

using namespace std;
using namespace cv;
int main()
{
Mat frame;
namedWindow("video", 1);
VideoCapture cap("http://192.168.8.102:8080/video.mjpg");
if(!cap.isOpened())
{
cout<<"Camera not found"<<endl;
getchar();
return -1;
}
while ( cap.isOpened() )
{
cap >> frame;
if(frame.empty()) break;
imshow("video", frame);
if(waitKey(30) >= 0) break;
}
return 0;
}

When running the C++, it does not show me the video and show me "Camera not found".

However, in Intel Edison terminal, it shows:
"GET /video.mjpg 206 87.816 ms - 1248"

Can you give me some advice and idea? Thank you.

[kcyeong92]

what are "206", "87.816 ms" and "1248" represent in ""GET /video.mjpg 206 87.816 ms - 1248""?
Thanks.

[SteveRuben]

Yes of course, you can write a server which get input and transmit to your browser using opencv for javascript.
You can also build a simple web video player and build server which should transmit video frame to the web application. I am working on it know.

I also see that you have check my code, thank. If it doesn't work for you, check your inputs.
work

[alexjose70]

what are "206", "87.816 ms" and "1248" represent in ""GET /video.mjpg 206 87.816 ms - 1248""?
Thanks.

206 is the http status of what you ask.
In this case, video.mjpg did not exist. So, the browser is server is replying that because there is no such a source, it will be redirect to another address (Index.html) and giving a partial content.
the 1248 I think it is the amount of data it is partially showing.