java SSM框架使用WebSocket推送视频流

依赖

    org.springframework
    spring-websocket
    5.2.5.RELEASE
    compile

1.视频工具类

import org.apache.log4j.Logger;
import org.springframework.web.socket.BinaryMessage;
import org.springframework.web.socket.WebSocketSession;

import java.io.InputStream;
import java.util.List;


/**
 * 
 * TODO：视频工具类
 * 
 *
 * @author zhangjunchao
 * @date 2019/8/19
 */
public class VideoUtils {
    private final static Logger logger = Logger.getLogger(VideoUtils.class);
    // 声明的ffmpeg.exe固定路径变量
    public  String FFMPEG_PATH = "D:/ffmpeg/bin/ffmpeg.exe";
    public  String channel = "";
    public  WebSocketSession webSocketSession = null;
    private  Process process;


    public VideoUtils(String channel, WebSocketSession webSocketSession) {
        // ffmpeg路径需要更换自己的
        FFMPEG_PATH = "D:\\developsoftware\\wisdom_screen_ds1200\\server\\ETCMornitoring\\src\\main\\resources" +
                "\\export_template" +
                "\\ffmpeg.exe";
        this.channel = channel;
        this.webSocketSession = webSocketSession;
    }
    /**
     * 视频转换
     *
     * @param video_path
     */
    public void convertCommand() {
        String channel = this.channel;
        WebSocketSession webSocketSession = this.webSocketSession;
        System.out.println("start");
        System.out.println(FFMPEG_PATH);
        InputStream errorStream = null;
        InputStream inputStream = null;
        try {
            List commands = new java.util.ArrayList();
            commands.add(FFMPEG_PATH);
            commands.add("-rtsp_transport");
            commands.add("tcp");
            commands.add("-i");
            commands.add(channel);
            commands.add("-vcodec");
            co