OPENCV读取AVI视频失败 视频帧提取以及图片合成

      #include <stdlib.h>

#include <stdio.h>

#include <math.h>

#include <cv.h>

#include <highgui.h>

#define NUM_FRAME 5591 //只处理前300帧，根据视频帧数可修改





int frameH;

int frameW; 

int fps;

int numFrames;



void Video_to_image(char* filename)

{

	printf("------------- video to image ... ----------------\n");

	//初始化一个视频文件捕捉器

	CvCapture* capture = cvCaptureFromAVI(filename);

	//获取视频信息

	cvQueryFrame(capture);

	frameH    = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);

	frameW    = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);

	fps       = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FPS);

	numFrames = (int) cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_COUNT);

	printf("\tvideo height : %d\n\tvideo width : %d\n\tfps : %d\n\tframe numbers : %d\n", frameH, frameW, fps, numFrames);

	//定义和初始化变量

	int i = 0;

	IplImage* img = 0;

	char image_name[13];

	

	cvNamedWindow( "mainWin", CV_WINDOW_AUTOSIZE );

	//读取和显示

	while(1) 

	{

		

		img = cvQueryFrame(capture); //获取一帧图片

		cvShowImage( "mainWin", img ); //将其显示

		char key = cvWaitKey(20);

		

		sprintf(image_name, "%s%d%s", "image", ++i, ".bmp");//保存的图片名

		

		cvSaveImage( image_name, img);   //保存一帧图片

		

		if(i >=numFrames || i >= NUM_FRAME ) break;



	}

	cvReleaseCapture(&capture);

	cvDestroyWindow("mainWin");

}

void Image_to_video()

{

	int i = 0;

	IplImage* img = 0;

	char image_name[13];

	printf("------------- image to video ... ----------------\n");

	//初始化视频编写器，参数根据实际视频文件修改

	CvVideoWriter *writer = 0;

	int isColor = 1;



	writer=cvCreateVideoWriter("out.avi",CV_FOURCC('X','V','I','D'),fps,cvSize(frameW,frameH),isColor);

	printf("\tvideo height : %d\n\tvideo width : %d\n\tfps : %d\n", frameH, frameW, fps);

	//创建窗口

	cvNamedWindow( "mainWin", CV_WINDOW_AUTOSIZE );

	while(i<NUM_FRAME)

	{

		sprintf(image_name, "%s%d%s", "image", ++i, ".bmp");

		img = cvLoadImage(image_name);

		if(!img)

		{

			printf("Could not load image file...\n");

			exit(0);

		}

		cvShowImage("mainWin", img);

		char key = cvWaitKey(20);

		cvWriteFrame(writer, img);

	}

	cvReleaseVideoWriter(&writer);

	cvDestroyWindow("mainWin");

}



int main(int argc, char *argv[])

{

	char filename[23] = "F:\\1_Xvid.avi";

	Video_to_image(filename); //视频转图片

	Image_to_video();    //图片转视频

	return 0;

}