项目需要将网络摄像头接入到服务器上，用c++或者python处理每帧的图像。查了很多资料总算解决了，回过头发现是很小的问题，但是大华官网的SDK真的很难看懂。OpenCV2.4。
直接上代码吧。
#include "cv.h"#include "highgui.h"#include <stdio.h>using namespace std;using namespace cv;int main(int, char**) {VideoCapture vcap;Mat image;const string videoStreamAddress = "rtsp://admin:dahua@192.168.1.108/cam/realmonitor?channel=1&subtype=0";/* it may be an address of an mjpeg stream,e.g. "http://user:pass@cam_address:8081/cgi/mjpg/mjpg.cgi?.mjpg" *///open the video stream and make sure it's openedif(!vcap.open(videoStreamAddress)) {cout << "Error opening video stream or file" << endl;return -1;}else{cout<<"success"<<endl;}//Create output window for displaying frames.//It's important to create this window outside of the `for` loop//Otherwise this window will be created automatically each time you call//`imshow(...)`, which is very inefficient.namedWindow("Output Window");for(;;) {if(!vcap.read(image)) {cout << "No frame" << endl;waitKey();}imshow("Output Window", image);if(waitKey(1) >= 0) break;}}
大华的网络摄像头编号：DH-IPC-HFW1225M-I1-0600B，用的是RTSP协议。
“rtsp://admin:dahua@192.168.1.108/cam/realmonitor?channel=1&subtype=0”;
其中的admin，dahua是登录摄像头的用户名和密码。IP地址是192.168.1.108，可以根据具体情况修改。
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