Track AVI Video

最新推荐文章于 2024-06-21 18:13:21 发布

原创最新推荐文章于 2024-06-21 18:13:21 发布 · 523 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#avi #video #dependencies #function #library #include

OpenCV 专栏收录该内容

4 篇文章

订阅专栏

本文介绍了一个使用OpenCV库在Windows环境下实现的视频播放程序。该程序通过Visual Studio 2010开发，能够读取并播放AVI格式的视频文件，并提供了一个滑动条来控制视频的播放位置。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1. OS: Win7

IDE: VS2010

2. Include Directories: ....../OpenCV2.2/include

....../OpenCV2.2/include/opencv

Library Directories: ....../OpenCV2.2/lib

Additional Dependencies: opencv_core220d.lib, opencv_highgui220d.lib

3. Code:

#include "stdafx.h"
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>

int g_slider_position = 0; // Slider position
CvCapture * g_capture = NULL; // AVI video capture

// Recall function: Set frame position in track bar
void onTrackbarSlide(int pos){
// Set CvCapture property (CV_CAP_PROP_POS_FRAMES/CV_CAP_PROP_POS_AVI_RATIO)
cvSetCaptureProperty(g_capture, CV_CAP_PROP_POS_FRAMES, pos);
}

int _tmain(int argc, _TCHAR* argv[])
{
// Track AVI window
cvNamedWindow("TrackAVI", CV_WINDOW_AUTOSIZE);

// Capture AVI file
g_capture = cvCreateFileCapture("AVI Video Path");

// Count frames of AVI video
int frames = (int) cvGetCaptureProperty(g_capture, CV_CAP_PROP_FRAME_COUNT);

if(frames != 0){
// Create track bar (Label, Window, Position, Frames Number, Recall Function)
cvCreateTrackbar("Position", "TrackAVI", &g_slider_position, frames, onTrackbarSlide);
}

// Frame as image
IplImage * frame;

while(1){
// Query next frame
frame = cvQueryFrame(g_capture);

  if(!frame){
   // Video Over
   break;
  }

// Show the current frame
cvShowImage("TrackAVI", frame);

// Wait 33 ms
char c = cvWaitKey(33);

  if(c == 27){
   // ESC Quit
   break;
  }
}

// Release CvCapture
cvReleaseCapture(&g_capture);

// Destory Window
cvDestroyWindow("TrackAVI");
return 0;
}