This is the code snippet to display an AVI video and it works.
int main(int argc, char** argv) {
// cvNamedWindow(“Example2”, CV_WINDOW_AUTOSIZE);
CvCapture* capture = cvCreateFileCapture("video.avi");
IplImage* frame;
while(1) {
frame = cvQueryFrame(capture);
if(!frame)
break;
cvShowImage("Example2", frame);
char c = cvWaitKey(33);
if(c == 27)
break;
}
cvReleaseCapture(&capture);
cvDestroyWindow("Example2");
return 0;
}
However, when I remove the comment // from the second line, it doesn't work. The error that I get is:
Invoking: GCC C Compiler
gcc -I/usr/include/opencv -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.c"
../main.c: In function ‘main’:
../main.c:5:5: error: stray ‘\342’ in program
../main.c:5:5: error: stray ‘\200’ in program
../main.c:5:5: error: stray ‘\234’ in program
../main.c:5:5: error: stray ‘\342’ in program
../main.c:5:5: error: stray ‘\200’ in program
../main.c:5:5: error: stray ‘\235’ in program
../main.c:5:23: error: ‘Example2’ undeclared (first use in this function)
../main.c:5:23: note: each undeclared identifier is reported only once for each function it appears in
make: *** [main.o] Error 1
How is 'Example2' undeclared? Isn't cvNamedwindow supposed to do that job?
