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i have a problem with capture frames from 2 different cameras in the same time. I know that is probably impossible (or it's quite difficult) to connect in this way 2 USB cams, but connecting one USB cam and one IPcam maybe is easier. Of course if they works separatly i don't have problems. For example this code doesn't work:

int main() {

const std::string videoStreamAddress = "http://........../img/video.mjpeg"; cv::VideoCapture camera0(0); cv::VideoCapture camera1(1); camera0.open(videoStreamAddress); cv::Mat3b frame0; cv::Mat3b frame1; while (true) { camera0 >> frame0; camera1 >> frame1; cv::imshow("Video0", frame0); cv::imshow("Video1", frame1); int c = cvWaitKey(40); if (27 == char(c)) break; }

return 0; }

I hope that anybody can help me

i have a problem with capture frames from 2 different cameras in the same time. I know that is probably impossible (or it's quite difficult) to connect in this way 2 USB cams, but connecting one USB cam and one IPcam maybe is easier. Of course if they works separatly i don't have problems. For example this code doesn't work:

int main() {
{
  
const std::string videoStreamAddress = "http://........../img/video.mjpeg";
cv::VideoCapture camera0(0);
cv::VideoCapture camera1(1);
camera0.open(videoStreamAddress);
cv::Mat3b frame0;
cv::Mat3b frame1;
while (true) {
    camera0 >> frame0;
    camera1 >> frame1;
    cv::imshow("Video0", frame0);
    cv::imshow("Video1", frame1);
    int c = cvWaitKey(40);
    if (27 == char(c)) break;
}}
  
return 0;
}}