Java—视频处理

　　原始视频通常需要经过编码处理，生成m3u8和ts文件方可基于HLS协议播放视频。通常用户上传原始视频，系统 自动处理成标准格式，系统对用户上传的视频自动编码、转换，最终生成m3u8文件和ts文件，

处理流程如下：

　　1、用户上传视频成功

　　2、系统对上传成功的视频自动开始编码处理

　　3、用户查看视频处理结果，没有处理成功的视频用户可在管理界面再次触发处理

　　4、视频处理完成将视频地址及处理结果保存到数据库

VideoUtil

package com.xuecheng.framework.utils;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

/**
 * 此文件作为视频文件处理父类，提供：
 * 1、查看视频时长
 * 2、校验两个视频的时长是否相等
 *
 */
public class VideoUtil {

    String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置

    public VideoUtil(String ffmpeg_path){
        this.ffmpeg_path = ffmpeg_path;
    }


    //检查视频时间是否一致
    public Boolean check_video_time(String source,String target) {
        String source_time = get_video_time(source);
        //取出时分秒
        source_time = source_time.substring(0,source_time.lastIndexOf("."));
        String target_time = get_video_time(target);
        //取出时分秒
        target_time = target_time.substring(0,target_time.lastIndexOf("."));
        if(source_time == null || target_time == null){
            return false;
        }
        if(source_time.equals(target_time)){
            return true;
        }
        return false;
    }

    //获取视频时间(时：分：秒：毫秒)
    public String get_video_time(String video_path) {
        /*
        ffmpeg -i  lucene.mp4
         */
        List<String> commend = new ArrayList<String>();
        commend.add(ffmpeg_path);
        commend.add("-i");
        commend.add(video_path);
        try {
            ProcessBuilder builder = new ProcessBuilder();
            builder.command(commend);
            //将标准输入流和错误输入流合并，通过标准输入流程读取信息
            builder.redirectErrorStream(true);
            Process p = builder.start();
            String outstring = waitFor(p);
            System.out.println(outstring);
            int start = outstring.trim().indexOf("Duration: ");
            if(start>=0){
                int end = outstring.trim().indexOf(", start:");
                if(end>=0){
                    String time = outstring.substring(start+10,end);
                    if(time!=null && !time.equals("")){
                        return time.trim();
                    }
                }
            }

        } catch (Exception ex) {

            ex.printStackTrace();

        }
        return null;
    }

     public String waitFor(Process p) {
        InputStream in = null;
        InputStream error = null;
        String result = "error";
        int exitValue = -1;
        StringBuffer outputString = new StringBuffer();
        try {
            in = p.getInputStream();
            error = p.getErrorStream();
            boolean finished = false;
            int maxRetry = 600;//每次休眠1秒，最长执行时间10分种
            int retry = 0;
            while (!finished) {
                if (retry > maxRetry) {
                    return "error";
                }
                try {
                    while (in.available() > 0) {
                        Character c = new Character((char) in.read());
                        outputString.append(c);
                        System.out.print(c);
                    }
                    while (error.available() > 0) {
                        Character c = new Character((char) in.read());
                        outputString.append(c);
                        System.out.print(c);
                    }
                    //进程未结束时调用exitValue将抛出异常
                    exitValue = p.exitValue();
                    finished = true;

                } catch (IllegalThreadStateException e) {
                    Thread.currentThread().sleep(1000);//休眠1秒
                    retry++;
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    System.out.println(e.getMessage());
                }
            }
        }
       return outputString.toString();

    }


    public static void main(String[] args) throws IOException {
        String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置
        VideoUtil videoUtil = new VideoUtil(ffmpeg_path);
        String video_time = videoUtil.get_video_time("E:\\ffmpeg_test\\1.avi");
        System.out.println(video_time);
    }
}

Mp4VideoUtil

package com.xuecheng.framework.utils;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by admin on 2018/3/6.
 */
public class Mp4VideoUtil extends VideoUtil {

    String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置
    String video_path = "D:\\BaiduNetdiskDownload\\test1.avi";
    String mp4_name = "test1.mp4";
    String mp4folder_path = "D:/BaiduNetdiskDownload/Movies/test1/";
    public Mp4VideoUtil(String ffmpeg_path, String video_path, String mp4_name, String mp4folder_path){
        super(ffmpeg_path);
        this.ffmpeg_path = ffmpeg_path;
        this.video_path = video_path;
        this.mp4_name = mp4_name;
        this.mp4folder_path = mp4folder_path;
    }
    //清除已生成的mp4
    private void clear_mp4(String mp4_path){
        //删除原来已经生成的m3u8及ts文件
        File mp4File = new File(mp4_path);
        if(mp4File.exists() && mp4File.isFile()){
            mp4File.delete();
        }
    }
    /**
     * 视频编码，生成mp4文件
     * @return 成功返回success，失败返回控制台日志
     */
    public String generateMp4(){
        //清除已生成的mp4
        clear_mp4(mp4folder_path+mp4_name);
        /*
        ffmpeg.exe -i  lucene.avi -c:v libx264 -s 1280x720 -pix_fmt yuv420p -b:a 63k -b:v 753k -r 18 .\lucene.mp4
         */
        List<String> commend = new ArrayList<String>();
        //commend.add("D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe");
        commend.add(ffmpeg_path);
        commend.add("-i");
//        commend.add("D:\\BaiduNetdiskDownload\\test1.avi");
        commend.add(video_path);
        commend.add("-c:v");
        commend.add("libx264");
        commend.add("-y");//覆盖输出文件
        commend.add("-s");
        commend.add("1280x720");
        commend.add("-pix_fmt");
        commend.add("yuv420p");
        commend.add("-b:a");
        commend.add("63k");
        commend.add("-b:v");
        commend.add("753k");
        commend.add("-r");
        commend.add("18");
        commend.add(mp4folder_path  + mp4_name );
        String outstring = null;
        try {
            ProcessBuilder builder = new ProcessBuilder();
            builder.command(commend);
            //将标准输入流和错误输入流合并，通过标准输入流程读取信息
            builder.redirectErrorStream(true);
            Process p = builder.start();
            outstring = waitFor(p);

        } catch (Exception ex) {

            ex.printStackTrace();

        }
        Boolean check_video_time = this.check_video_time(video_path, mp4folder_path + mp4_name);
        if(!check_video_time){
            return outstring;
        }else{
            return "success";
        }
    }

    public static void main(String[] args) throws IOException {
        String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置
        String video_path = "E:\\ffmpeg_test\\1.avi";
        String mp4_name = "809694a6a974c35e3a36f36850837d7c.mp4";
        String mp4_path = "F:/develop/upload/8/0/809694a6a974c35e3a36f36850837d7c/";
        Mp4VideoUtil videoUtil = new Mp4VideoUtil(ffmpeg_path,video_path,mp4_name,mp4_path);
        String s = videoUtil.generateMp4();
        System.out.println(s);
    }
}

HlsVideoUtil

package com.xuecheng.framework.utils;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

/**
 * 此文件用于视频文件处理，步骤如下：
 * 1、生成mp4
 * 2、生成m3u8
 *
 */
public class HlsVideoUtil extends  VideoUtil {

    String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置
    String video_path = "D:\\BaiduNetdiskDownload\\test1.avi";
    String m3u8_name = "test1.m3u8";
    String m3u8folder_path = "D:/BaiduNetdiskDownload/Movies/test1/";
    public HlsVideoUtil(String ffmpeg_path, String video_path, String m3u8_name,String m3u8folder_path){
        super(ffmpeg_path);
        this.ffmpeg_path = ffmpeg_path;
        this.video_path = video_path;
        this.m3u8_name = m3u8_name;
        this.m3u8folder_path = m3u8folder_path;
    }

    private void clear_m3u8(String m3u8_path){
        //删除原来已经生成的m3u8及ts文件
        File m3u8dir = new File(m3u8_path);
        if(!m3u8dir.exists()){
            m3u8dir.mkdirs();
        }
       /* if(m3u8dir.exists()&&m3u8_path.indexOf("/hls/")>=0){//在hls目录方可删除，以免错误删除
            String[] children = m3u8dir.list();
            //删除目录中的文件
            for (int i = 0; i < children.length; i++) {
                File file = new File(m3u8_path, children[i]);
                file.delete();
            }
        }else{
            m3u8dir.mkdirs();
        }*/
    }

    /**
     * 生成m3u8文件
     * @return 成功则返回success，失败返回控制台日志
     */
    public String generateM3u8(){
        //清理m3u8文件目录
        clear_m3u8(m3u8folder_path);
 /*
        ffmpeg -i  lucene.mp4   -hls_time 10 -hls_list_size 0   -hls_segment_filename ./hls/lucene_%05d.ts ./hls/lucene.m3u8
         */
//        String m3u8_name = video_name.substring(0, video_name.lastIndexOf("."))+".m3u8";
        List<String> commend = new ArrayList<String>();
        commend.add(ffmpeg_path);
        commend.add("-i");
        commend.add(video_path);
        commend.add("-hls_time");
        commend.add("10");
        commend.add("-hls_list_size");
        commend.add("0");
        commend.add("-hls_segment_filename");
//        commend.add("D:/BaiduNetdiskDownload/Movies/test1/test1_%05d.ts");
        commend.add(m3u8folder_path  + m3u8_name.substring(0,m3u8_name.lastIndexOf(".")) + "_%05d.ts");
//        commend.add("D:/BaiduNetdiskDownload/Movies/test1/test1.m3u8");
        commend.add(m3u8folder_path  + m3u8_name );
        String outstring = null;
        try {
            ProcessBuilder builder = new ProcessBuilder();
            builder.command(commend);
            //将标准输入流和错误输入流合并，通过标准输入流程读取信息
            builder.redirectErrorStream(true);
            Process p = builder.start();
            outstring = waitFor(p);

        } catch (Exception ex) {

            ex.printStackTrace();

        }
        //通过查看视频时长判断是否成功
        Boolean check_video_time = check_video_time(video_path, m3u8folder_path + m3u8_name);
        if(!check_video_time){
            return outstring;
        }
        //通过查看m3u8列表判断是否成功
        List<String> ts_list = get_ts_list();
        if(ts_list == null){
            return outstring;
        }
        return "success";


    }



    /**
     * 检查视频处理是否完成
     * @return ts列表
     */
    public List<String> get_ts_list() {
//        String m3u8_name = video_name.substring(0, video_name.lastIndexOf("."))+".m3u8";
        List<String> fileList = new ArrayList<String>();
        List<String> tsList = new ArrayList<String>();
        String m3u8file_path =m3u8folder_path + m3u8_name;
        BufferedReader br = null;
        String str = null;
        String bottomline = "";
        try {
            br = new BufferedReader(new FileReader(m3u8file_path));
            while ((str = br.readLine()) != null) {
                bottomline = str;
                if(bottomline.endsWith(".ts")){
                    tsList.add(bottomline);
                }
                //System.out.println(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            if(br!=null){
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        if (bottomline.contains("#EXT-X-ENDLIST")) {
//            fileList.add(hls_relativepath+m3u8_name);
            fileList.addAll(tsList);
            return fileList;
        }
        return null;

    }




    public static void main(String[] args) throws IOException {
        String ffmpeg_path = "D:\\Program Files\\ffmpeg-20180227-fa0c9d6-win64-static\\bin\\ffmpeg.exe";//ffmpeg的安装位置
        String video_path = "E:\\ffmpeg_test\\1.mp4";
        String m3u8_name = "1.m3u8";
        String m3u8_path = "E:\\ffmpeg_test\\1\\";
        HlsVideoUtil videoUtil = new HlsVideoUtil(ffmpeg_path,video_path,m3u8_name,m3u8_path);
        String s = videoUtil.generateM3u8();
        System.out.println(s);
        System.out.println(videoUtil.get_ts_list());
    }
}

MediaProcessTask

package com.xuecheng.manage_media_processor.mq;

import com.alibaba.fastjson.JSON;
import com.xuecheng.framework.domain.media.MediaFile;
import com.xuecheng.framework.domain.media.MediaFileProcess_m3u8;
import com.xuecheng.framework.utils.HlsVideoUtil;
import com.xuecheng.framework.utils.Mp4VideoUtil;
import com.xuecheng.manage_media_processor.dao.MediaFileMapper;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Map;

/**
 * Created by Administrator on 2020/6/7 0007.
 */
@Component
public class MediaProcessTask {
    @Value("${xc-service-manage-media.ffmpeg-path}")
    String ffmpeg_path;

    //上传文件根目录
    @Value("${xc-service-manage-media.video-location}")
    String serverPath;
    @Autowired
    private MediaFileMapper mediaFileMapper;

    //接收视频处理消息进行视频处理
    @RabbitListener(queues = "${xc-service-manage-media.mq.queue-media-video-processor}")
    public void receiveMediaProcessTask(String msg ){
        //1.解析消息内容，得到mediaId
        Map map = JSON.parseObject(msg, Map.class);
        String mediaId = (String) map.get("mediaId");
        //2.拿到mediaId从数据库中查询文件信息
        MediaFile mediaFile = mediaFileMapper.findByFileId(mediaId);
        if(null == mediaFile){
            return;
        }
        //文件类型
        String fileType = mediaFile.getFileType();
        if(!fileType.equals("avi")){
            mediaFile.setProcessStatus("303004");//无需处理
            mediaFileMapper.save(mediaFile);
            return ;
        }else{
            //需要处理
            mediaFile.setProcessStatus("303001");//处理中
            mediaFileMapper.save(mediaFile);
        }
        //3.使用工具类将avi文件生成mp4
        //String ffmpeg_path, String video_path, String mp4_name, String mp4folder_path
        //要处理的视频文件的路径
        String video_path = serverPath + mediaFile.getFilePath() + mediaFile.getFileName();
        //生成的mp4的文件名称
        String mp4_name = mediaFile.getFileId() + ".mp4";
        //生成的mp4所在的路径
        String mp4folder_path = serverPath + mediaFile.getFilePath();
        Mp4VideoUtil mp4VideoUtil = new Mp4VideoUtil(ffmpeg_path,video_path,mp4_name,mp4folder_path);
        //进行处理
        String result = mp4VideoUtil.generateMp4();
        if(result == null || !result.equals("success")){
            //处理失败
            mediaFile.setProcessStatus("303003");
            //定义mediaFileProcess_m3u8
            MediaFileProcess_m3u8 mediaFileProcess_m3u8 = new MediaFileProcess_m3u8();
            //记录失败原因
            mediaFileProcess_m3u8.setErrormsg(result);
            mediaFile.setMediaFileProcess_m3u8(mediaFileProcess_m3u8);
            mediaFileMapper.save(mediaFile);
            return ;
        }
        //4.将mp4生成m3u8和ts文件
        //String ffmpeg_path, String video_path, String m3u8_name,String m3u8folder_path
        //mp4视频文件路径
        String mp4_video_path = serverPath + mediaFile.getFilePath() + mp4_name;
        //m3u8_name文件名称
        String m3u8_name = mediaFile.getFileId() +".m3u8";
        //m3u8文件所在目录
        String m3u8folder_path = serverPath + mediaFile.getFilePath() + "hls/";
        HlsVideoUtil hlsVideoUtil = new HlsVideoUtil(ffmpeg_path,mp4_video_path,m3u8_name,m3u8folder_path);
        //生成m3u8和ts文件
        String tsResult = hlsVideoUtil.generateM3u8();
        if(tsResult == null || !tsResult.equals("success")){
            //处理失败
            mediaFile.setProcessStatus("303003");
            //定义mediaFileProcess_m3u8
            MediaFileProcess_m3u8 mediaFileProcess_m3u8 = new MediaFileProcess_m3u8();
            //记录失败原因
            mediaFileProcess_m3u8.setErrormsg(result);
            mediaFile.setMediaFileProcess_m3u8(mediaFileProcess_m3u8);
            mediaFileMapper.save(mediaFile);
            return ;
        }
        //处理成功
        //获取ts文件列表
        List<String> ts_list = hlsVideoUtil.get_ts_list();

        mediaFile.setProcessStatus("303002");
        //定义mediaFileProcess_m3u8
        MediaFileProcess_m3u8 mediaFileProcess_m3u8 = new MediaFileProcess_m3u8();
        mediaFileProcess_m3u8.setTslist(ts_list);
        mediaFile.setMediaFileProcess_m3u8(mediaFileProcess_m3u8);

        //保存fileUrl（此url就是视频播放的相对路径）
        String fileUrl =mediaFile.getFilePath() + "hls/"+m3u8_name;
        mediaFile.setFileUrl(fileUrl);
        mediaFileMapper.save(mediaFile);
    }
}