本节内容代码下载链接：http://download.csdn.net/detail/u012343179/9798499

在testOpencv工程下新建VideoPlay.java窗体应用

代码如下：

package imageIO;import java.awt.EventQueue;
import java.awt.image.BufferedImage;import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.videoio.VideoCapture;import tool.mat2BufferedImage;import java.awt.BorderLayout;public class VideoPlay {static{System.loadLibrary(Core.NATIVE_LIBRARY_NAME);}private JFrame frame;private static JLabel lblNewLabel;/*** Launch the application.*/public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {VideoPlay window = new VideoPlay();window.frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});//我们的操作VideoCapture capture=new VideoCapture("F://2.avi");//读取视频if (!capture.isOpened()) {System.out.println("Error");} else {Mat webcam_image = new Mat();capture.read(webcam_image);while (true) {capture.read(webcam_image);if( !webcam_image.empty() ){BufferedImage b=mat2BufferedImage.matToBufferedImage(webcam_image);lblNewLabel.setIcon(new ImageIcon(b));}else{System.out.println("视频已结束!");  capture.release();break;  }}}}/*** Create the application.*/public VideoPlay() {initialize();}/*** Initialize the contents of the frame.*/private void initialize() {frame = new JFrame();frame.setBounds(0, 0, 1000, 800);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);lblNewLabel = new JLabel("");lblNewLabel.setBounds(0, 0, 1000, 800);frame.getContentPane().add(lblNewLabel);}}

注意：要运行该程序，必须将opencv目录下build/bin目录下的ffmpeg那个dll文件（有2个，一个是32位，另一个是64位，看你计算机位数进行选择）复制到C：windows/system32。或者另一种办法是将bin目录添加到系统环境变量path中去。

运行结果：

播放视频成功！

Bug：再次运行程序会报错

将ffmpeg重新复制又能成功一次，我想应该是opencv中的bug吧，欢迎解决的朋友留下解决方案！

CommissarMa      2017年3月30日10:14:20