使用OpenCV進行視頻讀寫

OpenCV視頻讀寫的代碼，用的是其C++形式的API。輸入文件為完全無壓縮的avi格式視頻文件。

#include <opencv/cxcore.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>

#undef RC_OPENCV_2_1_0

#ifdef _DEBUG
#ifdef RC_OPENCV_2_1_0
#pragma comment( lib, "cxcore210d.lib" )
#pragma comment( lib, "cv210d.lib" )
#pragma comment( lib, "highgui210d.lib" )
#else
#pragma comment( lib, "opencv_core220d.lib" )
#pragma comment( lib, "opencv_highgui220d.lib" )
#pragma comment( lib, "opencv_imgproc220d.lib" )
#endif
#else
#ifdef RC_OPENCV_2_1_0
#pragma comment( lib, "cxcore210.lib" )
#pragma comment( lib, "cv210.lib" )
#pragma comment( lib, "highgui210.lib" )
#else
#pragma comment( lib, "opencv_core220.lib" )
#pragma comment( lib, "opencv_highgui220.lib" )
#pragma comment( lib, "opencv_imgproc220.lib" )
#endif
#endif

void main()
{
/** 打開輸入視頻文件 */
cv::VideoCapture vc;
vc.open( ".//test.avi" );

if ( vc.isOpened() )
{
/** 打開輸出視頻文件 */
cv::VideoWriter vw;
vw.open( ".//output.avi", // 輸出視頻文件名
(int)vc.get( CV_CAP_PROP_FOURCC ), // 也可設為CV_FOURCC_PROMPT，在運行時選取
(double)vc.get( CV_CAP_PROP_FPS ), // 視頻幀率
cv::Size( (int)vc.get( CV_CAP_PROP_FRAME_WIDTH ), (int)vc.get( CV_CAP_PROP_FRAME_HEIGHT ) ), // 視頻大小
true ); // 是否輸出彩色視頻

/** 如果成功打開輸出視頻文件 */
if ( vw.isOpened() )
{
while ( true )
{
/** 讀取當前視頻幀 */
cv::Mat frame;
vc >> frame;

/** 若視頻讀取完畢，跳出循環 */
if ( frame.empty() )
{
break;
}

/** 將視頻寫入文件 */
vw << frame;
}
}
}

/** 手動釋放視頻捕獲資源 */
vc.release();
}

運行結果

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Ubuntu Linux下安裝OpenCV2.4.1所需包 http://www.linuxidc.com/Linux/2012-08/68184.htm

Ubuntu 12.04 安裝 OpenCV2.4.2 http://www.linuxidc.com/Linux/2012-09/70158.htm

CentOS下OpenCV無法讀取視頻文件 http://www.linuxidc.com/Linux/2011-07/39295.htm

Ubuntu 12.04下安裝OpenCV 2.4.5總結 http://www.linuxidc.com/Linux/2013-06/86704.htm

Ubuntu 10.04中安裝OpenCv2.1九步曲 http://www.linuxidc.com/Linux/2010-09/28678.htm

基於QT和OpenCV的人臉識別系統 http://www.linuxidc.com/Linux/2011-11/47806.htm

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OpenCV的詳細介紹：請點這裡
OpenCV的下載地址：請點這裡