Java利用VLC实现从视频中抽取帧图片

1，资源准备

vlc官网下载地址：https://get.videolan.org/vlc/3.0.4/win64/vlc-3.0.4-win64.exe

slf4j下载地址：https://www.slf4j.org/download.html

vlcj下载地址：http://capricasoftware.co.uk/#/projects/vlcj（往下拉）

2，环境搭建

1，VLC版本对应自身电脑版本，否则会报错，报错信息如下：

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'libvlc': JNA native support (win32-amd64/libvlc.dll) not found in resource path

2，将SLF4J中的SLF4J-API-1.7.13.jar，SLF4J-NOP-1.7.13.jar复制到项目的LIB下

3，将vlcj中的JNA-3.5.2.jar，平台3.5.2.jar，vlcj-3.8.0.jar复制到项目的LIB下

4，封装VLC库，新建的Java的的项目就行

5，将vlc安装目录下的  插件，libvlc.dll，libvlccore.dll，三个文件放进项目根目录下，

6，最后项目结构图就算是搭建完成了

 

3，环境测试：

校验库是否加载成功

package test;

import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;

import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
/**
 * 所属包:test

 * 类名:PlayMain

 * -------------------

 * 描述:加载本地库，仅限于windows系统

 * -------------------

 * 日期:2018年11月21日

 * 作者:cuixin
 */
public class TestLib{
	private static final String NATIVE_LIBRARY_SEARCH_PATH = "F://VLC";
	
	public static void main(String[] args) {
        NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), NATIVE_LIBRARY_SEARCH_PATH);
        Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
        boolean discover = new NativeDiscovery().discover();
        System.out.println(discover);
	}
}

4，预设进度值抽取截图类

package test;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;

import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.player.MediaPlayer;
import uk.co.caprica.vlcj.player.MediaPlayerEventAdapter;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
/**
 * 所属包:test

 * 类名:SnapshotTest

 * -------------------

 * 描述:预设帧数，抽取截图

 * -------------------

 * 日期:2018年11月22日

 * 作者:cuixin
 */
public class SnapshotTest  {

    private static final String NATIVE_LIBRARY_SEARCH_PATH = "F://VLC";
    public static void main(String[] args) throws Exception {
    	
	 NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), NATIVE_LIBRARY_SEARCH_PATH);
	 Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
	 @SuppressWarnings("unused")
	 boolean discover = new NativeDiscovery().discover();
	 	//预设进度值
    	ListlistBar=new ArrayList();
    	listBar.add(0.20f);
    	listBar.add(0.50f);
    	listBar.add(0.70f);
    	listBar.add(0.90f);
        MediaPlayerFactory factory = new MediaPlayerFactory();
        MediaPlayer mediaPlayer = factory.newEmbeddedMediaPlayer();
        mediaPlayer.addMediaPlayerEventListener(new MediaPlayerEventAdapter() {
            @Override
            public void snapshotTaken(MediaPlayer mediaPlayer, String filename) {
                System.out.println("截取的快照：+(filename=" + filename + ")");
            }
        });

        mediaPlayer.startMedia("E:\\百度网盘下载地址\\30HZ-264 模特.mp4");
        for (Float float1 : listBar) {
        mediaPlayer.setPosition(float1);
        Thread.sleep(1000); 
        
        File file3 = new File((int)(float1*100)+".png");
        file3.deleteOnExit();
        mediaPlayer.saveSnapshot(file3);
        BufferedImage image3 = ImageIO.read(file3);
        show("截屏", image3, 3);
        }
        mediaPlayer.stop();
  }

    @SuppressWarnings("serial")
    private static void show(String title, final BufferedImage img, int i) {
        JFrame f = new JFrame(title);		
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setContentPane(new JPanel() {
            @Override
            protected void paintChildren(Graphics g) {
                Graphics2D g2 = (Graphics2D)g;
                g2.drawImage(img, null, 0, 0);
            }

            @Override
            public Dimension getPreferredSize() {
                return new Dimension(img.getWidth(), img.getHeight());
            }
        });
        f.pack();
        f.setLocation(50 + (i * 50), 50 + (i * 50));
        //是否开启弹窗
        f.setVisible(false);
    	}
}

源码地址：https://download.csdn.net/download/qq_40773484/10802973