引入依赖

 org.bytedeco  javacv  1.4.3  org.bytedeco.javacpp-presets  ffmpeg-platform  4.0.2-1.4.3

需要注意这两个包之间的版本有一个对应关系，如果版本不对应可能会出问题

解码过程

实现的一个简单功能是：

从Socket获取视频输入流（H264格式）获取视频流中的帧把每一帧转换成 BufferedImage

package com.amwalle.walle.raspi.camera;import org.bytedeco.javacv.FFmpegFrameGrabber;import org.bytedeco.javacv.Frame;import org.bytedeco.javacv.Java2DFrameConverter;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.awt.image.BufferedImage;import java.io.IOException;import java.io.InputStream;import java.net.Socket;public class CameraHandler implements Runnable { private static final Logger logger = LoggerFactory.getLogger(CameraHandler.class); private final String LOCK = "LOCK"; private Socket cameraSocket; private static BufferedImage bufferedImage; CameraHandler(Socket socket) throws IOException { this.cameraSocket = socket; } String getLock() { return LOCK; } @Override public void run() { try {  InputStream cameraStream = cameraSocket.getInputStream();  FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(cameraStream);  frameGrabber.setFrameRate(30);  frameGrabber.setFormat("h364");  frameGrabber.setVideoBitrate(15);  frameGrabber.setVideoOption("preset", "ultrafast");  frameGrabber.setNumBuffers(25000000);  frameGrabber.start();  Frame frame = frameGrabber.grab();  Java2DFrameConverter converter = new Java2DFrameConverter();  while (frame != null) {  BufferedImage bufferedImage = converter.convert(frame);  setBufferedImage(bufferedImage);  synchronized (LOCK) {   LOCK.notifyAll();  }  frame = frameGrabber.grab();  } } catch (IOException e) {  logger.info("Video handle error, exit ...");  logger.info(e.getMessage()); } } private void setBufferedImage(BufferedImage image) { bufferedImage = image; } BufferedImage getBufferedImage() { return bufferedImage; }}