如何将输出视频保存到OpenCV中的文件中

问题描述：

我想将输出视频保存到文件中而不是显示它，并尝试使用cvcaptureimage，但仍然无法获得结果

I want to save the output video into a file instead of displaying it and tried using cvcaptureimage but still unable to get the result

#include <highgui.h>

int main(int argc, char *argv[])
{
    // Create a "Capture" object from 1st command line argument
    CvCapture *video = cvCaptureFromFile(argv[1]);
    // this is the structure that will store the frames
    IplImage *frame = NULL;
    // create a window to display the video
    cvNamedWindow("Video", CV_WINDOW_AUTOSIZE);
    // get the next frame
    while (frame = cvQueryFrame(video) )
    {
        // display it in the window we created
        cvShowImage("Video", frame);
        // wait 1000/fps milliseconds
        cvWaitKey((int)(1000/cvGetCaptureProperty(video, CV_CAP_PROP_FPS)));
        //reading into .avi file
        CvCapture*capture=0  
        capture=cvcreateFileCapture(arg[1]);
      if(!capture)
        {
           // intiate the video read
            IpLImage *bgr_frame=cvQueryFrame(capture);
            double fps=cvGetCaptureProperty(capture,CV_CAP_PROP_FPS);
         } 
    }
}

我能知道我在代码中重复的错误吗?

can I know the mistake I am repeating in my code?

答

我知道这已经很老了，但是我不同意关于OSX的声明.

I know that this is pretty old, but I cannot agree to that statement about OSX.

您可以在OSX上轻松构建和编译FFMPEG.无需使用QTKIT/Quicktime.我实际上在OSX上编写视频，没有任何问题.

You can easily build and compile FFMPEG on OSX. No need for using QTKIT/Quicktime. I'm actually writing Video on OSX without any problems.

另一个建议是使用新的OpenCV 2.0+结构，而不要使用那些已弃用的结构. (使用Mat代替IplImage/cvMat，使用VideoWriter和VideoCapture.)

Another suggestion would be to use the new OpenCV 2.0+ structures instead of using those deprecated ones. (Use Mat instead of IplImage/cvMat, use VideoWriter and VideoCapture.)

Mat image;
VideoCapture capture;
VideoWriter out;

capture = VideoCapture(-1);
image << capture;

out.write(image);

如何将输出视频保存到OpenCV中的文件中

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