opencv:写入视频

2019-11-10 23:38:29

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#include "cv.h"#include "highgui.h"int main(int argc,char** argv){ CvCapture* capture = 0; //打开视频文件 capture = cvCreateFileCapture("E:/opencv/avi.avi"); if (!capture) { return -1; } //读取视频帧 iplImage* bgr_frame = cvQueryFrame(capture); //获得视频流的各种参数 double fps = cvGetCapturePRoperty(capture,CV_CAP_PROP_FPS); CvSize size = cvSize( (int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_WIDTH), (int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_HEIGHT) ); //创建写入设备 CvVideoWriter* writer = cvCreateVideoWriter("E:/opencv/m_avi", CV_FOURCC('M','J','P','G'),//视频格式 fps, size); IplImage* logpolar_frame = cvCreateImage(size,IPL_DEPTH_8U,3); while((bgr_frame = cvQueryFrame(capture)) != NULL) { cvLogPolar(bgr_frame,logpolar_frame,cvPoint2D32f(bgr_frame->width/2, bgr_frame->height/2), 40,CV_INTER_LINEAR+CV_WARP_FILL_OUTLIERS); cvWriteFrame(writer,logpolar_frame); } cvReleaseVideoWriter(&writer); cvReleaseImage(&logpolar_frame); cvReleaseCapture(&capture); return 0;}

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