opencv3接收rtsp网络视频流

项目需要，最近在研究网络摄像头视频流的接收。之前用的vlc，操作简单，接收效果特别好，略有延迟，而且vlc是开源的！！！如果代码能力有点强悍，可以自己改写。

可是呢，可是呢，这又会是个比较大的工程对不对，懒人有懒人的办法，利用opencv自带函数接收rtsp视频流的功能，opencv2和opencv3代码都在这里，以下：

Opencv2：

#include "opencv2/opencv.hpp"
#include"opencv2/core/core.hpp"
#include
#include"opencv2/highgui/highgui.hpp"

#include
#include

//作者的opencv版本3.0,所以代码是2.x版本，包含的包是3.0的包



using namespace cv;
using namespace std;

int main(int argc, char **argv){
  IplImage *pFrame = NULL, *srcImage=NULL;
  CvCapture *pCapture = NULL;
  pCapture =cvCreateFileCapture("rtsp://0.0.0.1/stream1");//your own rtsp address

if(!pCapture){
  printf("Can not get the videostream from the camera!\n");
  return NULL;
 }

doublerate=cvGetCaptureProperty(pCapture,CV_CAP_PROP_FPS);

CvSize size=cvSize((int)cvGetCaptureProperty(pCapture,CV_CAP_PROP_FRAME_WIDTH),(int)cvGetCaptureProperty(pCapture,CV_CAP_PROP_FRAME_HEIGHT));

CvVideoWriter*writer=cvCreateVideoWriter("videotest.avi",CV_FOURCC('M','J','P','G'),rate,size);

while(1){
   pFrame = cvQueryFrame(pCapture);
   srcImage=cvCloneImage(pFrame);
   cvWriteFrame(writer,srcImage);
   cvShowImage("123234",srcImage);
   //cout<width<<","<height<

Opencv3:

#include "stdafx.h"
#include 
#include 

using namespace std;
using namespace cv;


int main()
{
        VideoCapture cap;
        cap.open("rtsp://0.0.0.1/stream1");//呵呵，就这一句关键

        Mat Camera_CImg;
        Mat Camera_GImg;

        cap.set(CV_CAP_PROP_FRAME_HEIGHT,768);
        cap.set(CV_CAP_PROP_FRAME_WIDTH,1024);

        if (!cap.isOpened())
            return 1024;

        while (1)
        {
            cap>> Camera_CImg;
            if(Camera_CImg.empty())
                break;
            cvtColor(Camera_CImg,Camera_GImg, CV_RGB2GRAY);
            imshow("input", Camera_CImg);

            if (cvWaitKey(10) == 'q')
                break;
        }

    system("pause");
    return 0;
}

=========================

 

1，用gstreamer编译opencv -DWITH GSTREAMER=ON;

2，cvCaptureFromFile("rtspsrc location=\"rtsp://192.168.0.220:554/user=admin&password=admin&channel=1&stream=0.sdp?real_stream--rtp-caching=10\" latency=10 ! rtph264depay ! h264parse ! omxh264dec ! videoconvert ! appsink");