namedWindow("E1",cv::WINDOW_AUTOSIZE);
namedWindow("E2",cv::WINDOW_AUTOSIZE);
VideoCapture capture(0);
Size size((int)capture.get(CV_CAP_PROP_FRAME_WIDTH ),(int)capture.get(CV_CAP_PROP_FRAME_HEIGHT ));
VideoWriter writer;
writer.open("D:\\shipin.avi",CV_FOURCC('M','J','P','G'),12,size);
Mat log_frame, bgr_frame;
for(;;)
{
capture>>bgr_frame;
if(bgr_frame.empty()) break;
imshow("E1",bgr_frame);
Canny(bgr_frame,log_frame,60,120);
imshow("E2",log_frame);
writer<<log_frame;
char c = waitKey(1);
if(c == 27) break;
}
在上面这段代码中,视频保存在本地,但是只有6K,而且播放有没有东西