OpenCV error - Xlib, libv4l2, VIDEOIO error

Community General Discussions
, , , ,
1

Hi, I tried 2 types of code, do you know how to solve that problem? :)

CODE

#include "opencv/highgui.h"
#include "opencv/cv.h"
#include "stdio.h"
int main( int argc, char** argv ) {

IplImage frame = 0;

cvNamedWindow( “VideoCapture”, CV_WINDOW_AUTOSIZE );

CvCapture capture = 0;

capture = cvCaptureFromCAM( CV_CAP_ANY );

while(1) {

frame = cvQueryFrame( capture );

if( !frame ) break;

cvShowImage( “VideoCapture”, frame );

char c = cvWaitKey(33);

if( c == 27 ) break;

}

cvReleaseCapture( &capture );

cvDestroyWindow( “VideoCapture” );

}

ERROR message

Xlib:  extension “RANDR” missing on display “:1.0”.

libv4l2: error setting pixformat: Device or resource busy

VIDEOIO ERROR: libv4l unable to ioctl S_FMT

libv4l2: error setting pixformat: Device or resource busy

libv4l1: error setting pixformat: Device or resource busy

VIDEOIO ERROR: libv4l unable to ioctl VIDIOCSPICT