我正在尝试连接 Raspberry Pi 中的两个网络摄像头

Question

它给出了一个错误 "VIDIOC_QBUF: No such device, VIDIOC_DQBUF: No such device" 但当其中一个连接时它工作正常。

namedWindow("OriginalL",0);
namedWindow("OriginalR",2);
VideoCapture captureL(0);
if (!captureL.isOpened()) cout << "L doesn't work" << endl;
VideoCapture captureR(1);
if (!captureR.isOpened()) cout << "R doesn't work" << endl;

for(;;)
{
    captureL >> imageL;
    captureR >> imageR;
    imshow("OriginalL", imageL);
    imshow("OriginalR", imageR);
    if (waitKey(30)== 27)
    break;
}

Answer 1

由于 USB 带宽和处理问题

，很难或不可能将两个 USB 摄像头连接到 Raspberry Pi

https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=102098

我正在尝试连接 Raspberry Pi 中的两个网络摄像头

I am trying to connect two webcams in Raspberry Pi

c++

opencv

raspberry-pi3