从视频中保存图片

int main(){CvCapture * capture;capture = cvCreateFileCapture("Wildlife.wmv");if(!capture){printf("read media error");return -1;}char picturename[64];int framenum = 0;IplImage * frame;while(1){frame = cvQueryFrame(capture);framenum++;if(!frame){printf("read media end");break;}if( 0 == framenum % 25){sprintf(picturename,"%d.jpg",framenum);cvSaveImage(picturename,frame,NULL);printf("%s saved\n",picturename);}}cvReleaseImage(&frame);system("PAUSE");return 0;}