Hi,
My aim is to record video from Axis camera using bbb. I have done video
streaming in bbb and it worked well. I can watch live video on an output
window. I installed opencv in bbb and programs are written in C++. Now i
need to record video at 25fps and i coded as shown below.
#include <iostream>
#include "cv.h"
#include "highgui.h"
using namespace std;
int main (int argc, char *argv[])
{
cv::VideoCapture vcap;
cv::Mat frame;
cv::VideoWriter video;
// Open the default camera
const std::string videoStreamAddress = "http://USERNAME:PASSWORD@IP
ADDRESS/mjpg/video.mjpg";
// Check if the camera was opened
if(!vcap.open(videoStreamAddress)) {
std::cout << "Error opening video stream or file" << std::endl;
return -1;
}
// Get the properties from the camera
double width = vcap.get(CV_CAP_PROP_FRAME_WIDTH);
double height = vcap.get(CV_CAP_PROP_FRAME_HEIGHT);
cout << "Camera properties\n";
cout << "width = " << width << endl <<"height = "<< height << endl;
// Create a window to show the image
cv::namedWindow ("Capture", CV_WINDOW_AUTOSIZE);
// Create the video writer
video.open("capture.avi",CV_FOURCC('M','J','P','G', 25,
cvSize((int)width,(int)height),true );
// Check if the video was opened
if(!video.isOpened())
{
cerr << "Could not create video.";
return -1;
}
cout << "Press Esc to stop recording." << endl;
// Get the next frame until the user presses the escape key
while(true)
{
// Get frame from capture
vcap >> frame;
// Check if the frame was retrieved
if(!frame.data)
{
cerr << "Could not retrieve frame.";
return -1;
}
// Save frame to video
video << frame;
// Show image
cv::imshow("Capture", frame);
// Exit with escape key
if(cv::waitKey(1) == 27)
break;
}
// Exit
return 0;
}
This code is working in Eclipse IDE installed in Ubuntu host machine and i
got recorded video in the workspace of Eclipse. When i copied this program
to bbb, it is not working. It can stream the video and sent the frame
properties and the output is "Could not create video.". What is the problem
in this code? Can anyone help me?
Also i want to store this video to the sd card which act as the extra
storage in bbb. how i can do it? Please help me.
Thanks in advance.
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