Java使用FFmpeg实现mp4转m3u8

前言

本文借鉴https://blog.csdn.net/weixin_44446784/article/details/123499468

FFmpeg

官网：https://ffmpeg.org/

FFmpeg是一套可以用来记录、转换数字音频、视频，并能将其转化为流的开源计算机程序。采用LGPL或GPL许可证。它提供了录制、转换以及流化音视频的完整解决方案。它包含了非常先进的音频/视频编解码库libavcodec，为了保证高可移植性和编解码质量，libavcodec里很多code都是从头开发的。

M3U8

M3U8是一种基于文本的播放列表文件格式，用于指定多个媒体文件（通常是视频或音频）的播放顺序和信息，常用于网络流媒体传输。M3U8文件通常包含一系列URL地址，用于指定媒体文件的片段（segment）或流（stream），以及相关的元数据和参数。

M3U8文件一般通过HTTP协议进行下载和访问，播放器通过解析M3U8文件获取媒体文件的地址和相关信息，并根据需要逐个下载和播放分片媒体文件，从而实现流媒体的播放。由于其开放的文本格式和广泛的支持，M3U8文件在各种流媒体应用中得到了广泛的应用，特别是在移动设备和网络直播领域。

一、需求及思路分析

使用ffmpeg，把视频文件切片成m3u8，并且通过springboot，可以实现在线的点播。
客户端上传视频到服务器，服务器对视频进行切片后，返回m3u8，封面等访问路径。可以在线的播放。

二、安装FFmpeg

下载地址：https://ffmpeg.org/download.html

1.windows下安装FFmpeg

• 1.点击上面的官方下载地址选择Windows进行下载
  
• 2.下载完成后解压内容如下
  
• 3.配置系统环境变量到解压目录的bin下边
  
• 4.打开命令行输入ffmpeg -version查看是否安装成功
  

2.linux下安装FFmpeg

Ubuntu

提示需要其他依赖，按照提示进行操作即可；
如先操作：sudo apt --fix-broken install，再继续安装：sudo apt install ffmpeg；
或者使用指令：sudo apt install ffmpeg --fix-missing

• 1、更新apt：sudo apt update

• 2、安装FFmpeg：sudo apt install ffmpeg

• 3、安装完成后，验证安装结果：ffmpeg -version

CentOS

• 1.使用命令下载

wget https://johnvansickle.com/ffmpeg/release-source/ffmpeg-4.1.tar.xz
#使用命令解压：
cd  /root/FFmpeg
tar -xvJf ffmpeg-4.1.tar.xz

• 2.yasm安装包

cd /root/FFmpeg
wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz  #下载源码包
tar zxvf yasm-1.3.0.tar.gz #解压
cd yasm-1.3.0 #进入目录
./configure #配置
make && make install #编译安装

• 3.安装FFmpeg

cd /root/FFmpeg/ffmpeg-4.1/
./configure --enable-shared --prefix=/usr/local/ffmpeg-4.1
make && make install #编译安装

• 4.下载x264

cd /root/libx264/
yum -y install git
git clone https://git.videolan.org/git/x264.git

• 5.安装nasm

tar -xvf nasm-2.14.02.tar.gz 
cd nasm-2.14.02
./configure
make
sudo make install
#查看是否安装成功
nasm -version

• 6.安装FFmpeg

#配置 /etc/ld.so.conf
vim /etc/ld.so.conf #通过vim指令进入位于etc目录中的ld.so.conf
#输入i进入插入模式，将第二行的内容插入到该文件
include ld.so.conf.d/*.conf
/usr/local/ffmpeg-4.1/lib

ldconfig  #ldconfig 是一个动态链接库管理命令，其目的为了让动态链接库为系统所共享。
make
sudo make install
# ffmpeg  -i  /root/FFmpeg/wukel.mp4  -c:v  libx264  -c:a  copy  -hls_key_info_file  /root/FFmpeg/video_folder/20220308/test1/  -hls_time  15  -hls_playlist_type  vod  -hls_segment_filename  %06d.ts  index.m3u8
ldd ffmpeg
cd /root/FFmpeg/ffmpeg-4.1
./configure --prefix=/usr/softinstall/ffmpeg --enable-gpl --enable-shared --enable-libx264

# 配置环境变量
vim /etc/profile
#配置如下
export FFMPEG_HOME=/usr/local/ffmpeg-4.1
export PATH=$FFMPEG_HOME/bin:$PATH
#修改完使用命令退出
~:wq
source /etc/profile
# 测试
ffmpeg -version
~~~~~~~~成功~~~~~~~~~

三、代码实现

1.引入依赖

pom.xml

    <properties>
        <java.version>1.8java.version>
        <javacv.version>1.5.4javacv.version>
        <ffmpeg.version>4.3.1-1.5.4ffmpeg.version>
    properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
     
        
        <dependency>
            <groupId>org.bytedecogroupId>
            <artifactId>javacvartifactId>
            <version>${javacv.version}version>
            <exclusions>
                <exclusion>
                    <groupId>org.bytedecogroupId>
                    <artifactId>*artifactId>
                exclusion>
            exclusions>
        dependency>

        <dependency>
            <groupId>org.bytedecogroupId>
            <artifactId>ffmpeg-platformartifactId>
            <version>${ffmpeg.version}version>
        dependency>

        <dependency>
            <groupId>cn.hutoolgroupId>
            <artifactId>hutool-allartifactId>
            <version>5.6.5version>
        dependency>
        <dependency>
            <groupId>com.google.code.gsongroupId>
            <artifactId>gsonartifactId>
        dependency>

        <dependency>
            <groupId>commons-langgroupId>
            <artifactId>commons-langartifactId>
            <version>2.6version>
        dependency>

        <dependency>
            <groupId>commons-fileuploadgroupId>
            <artifactId>commons-fileuploadartifactId>
            <version>1.2.2version>
        dependency>
        <dependency>
            <groupId>commons-iogroupId>
            <artifactId>commons-ioartifactId>
            <version>2.5version>
        dependency>
        <dependency>
            <groupId>commons-codecgroupId>
            <artifactId>commons-codecartifactId>
        dependency>
    dependencies>

2.修改配置文件

server:
  port: 8086

app:
  # 存储转码视频的文件夹
  video-folder: /root/FFmpeg/video_folder

spring:
  servlet:
    multipart:
      enabled: true
      # 不限制文件大小
      max-file-size: -1
      # 不限制请求体大小
      max-request-size: -1
      # 临时IO目录
      location: "${java.io.tmpdir}"
      # 不延迟解析
      resolve-lazily: false
      # 超过1Mb，就IO到临时目录
      file-size-threshold: 1MB
  web:
    resources:
      static-locations:
        - "classpath:/static/"
        - "file:${app.video-folder}" # 把视频文件夹目录，添加到静态资源目录列表

3.工具类

MediaInfo

import java.util.List;

import com.google.gson.annotations.SerializedName;

public class MediaInfo {
    public static class Format {
        @SerializedName("bit_rate")
        private String bitRate;
        public String getBitRate() {
            return bitRate;
        }
        public void setBitRate(String bitRate) {
            this.bitRate = bitRate;
        }
    }

    public static class Stream {
        @SerializedName("index")
        private int index;

        @SerializedName("codec_name")
        private String codecName;

        @SerializedName("codec_long_name")
        private String codecLongame;

        @SerializedName("profile")
        private String profile;
    }

    @SerializedName("streams")
    private List<Stream> streams;

    @SerializedName("format")
    private Format format;

    public List<Stream> getStreams() {
        return streams;
    }

    public void setStreams(List<Stream> streams) {
        this.streams = streams;
    }

    public Format getFormat() {
        return format;
    }

    public void setFormat(Format format) {
        this.format = format;
    }
}

TranscodeConfig

import lombok.Data;

@Data
public class TranscodeConfig {

    private String poster = "00:00:00.001";				// 截取封面的时间			HH:mm:ss.[SSS]
    private String tsSeconds = "15";			// ts分片大小，单位是秒
    private String cutStart;			// 视频裁剪，开始时间		HH:mm:ss.[SSS]
    private String cutEnd;				// 视频裁剪，结束时间		HH:mm:ss.[SSS]
    public String getPoster() {
        return poster;
    }

    public void setPoster(String poster) {
        this.poster = poster;
    }

    public String getTsSeconds() {
        return tsSeconds;
    }

    public void setTsSeconds(String tsSeconds) {
        this.tsSeconds = tsSeconds;
    }

    public String getCutStart() {
        return cutStart;
    }

    public void setCutStart(String cutStart) {
        this.cutStart = cutStart;
    }

    public String getCutEnd() {
        return cutEnd;
    }

    public void setCutEnd(String cutEnd) {
        this.cutEnd = cutEnd;
    }

    @Override
    public String toString() {
        return "TranscodeConfig [poster=" + poster + ", tsSeconds=" + tsSeconds + ", cutStart=" + cutStart + ", cutEnd="
                + cutEnd + "]";
    }
}

FFmpegUtils

import com.erfou.minio.demo.config.TranscodeConfig;
import com.erfou.minio.demo.domain.MediaInfo;
import com.google.gson.Gson;
import org.apache.commons.codec.binary.Hex;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;

import javax.crypto.KeyGenerator;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;

public class FFmpegUtils {

    private static final Logger LOGGER = LoggerFactory.getLogger(FFmpegUtils.class);

    // 跨平台换行符
    private static final String LINE_SEPARATOR = System.getProperty("line.separator");

    /**
     * 生成随机16个字节的AESKEY
     *
     * @return
     */
    private static byte[] genAesKey() {
        try {
            KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
            keyGenerator.init(128);
            return keyGenerator.generateKey().getEncoded();
        } catch (NoSuchAlgorithmException e) {
            return null;
        }
    }

    /**
     * 在指定的目录下生成key_info, key文件，返回key_info文件
     *
     * @param folder
     * @throws IOException
     */
    private static Path genKeyInfo(String folder) throws IOException {
        // AES 密钥
        byte[] aesKey = genAesKey();
        // AES 向量
        String iv = Hex.encodeHexString(genAesKey());

        // key 文件写入
        Path keyFile = Paths.get(folder, "key");
        Files.write(keyFile, aesKey, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);

        // key_info 文件写入
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("key").append(LINE_SEPARATOR);                    // m3u8加载key文件网络路径
        stringBuilder.append(keyFile).append(LINE_SEPARATOR);    // FFmeg加载key_info文件路径
        stringBuilder.append(iv);                                            // ASE 向量

        Path keyInfo = Paths.get(folder, "key_info");

        Files.write(keyInfo, stringBuilder.toString().getBytes(), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);

        return keyInfo;
    }

    /**
     * 指定的目录下生成 master index.m3u8 文件
     *
     * @param file      master m3u8文件地址
     * @param indexPath 访问子index.m3u8的路径
     * @param bandWidth 流码率
     * @throws IOException
     */
    private static void genIndex(String file, String indexPath, String bandWidth) throws IOException {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("#EXTM3U").append(LINE_SEPARATOR);
        stringBuilder.append("#EXT-X-STREAM-INF:BANDWIDTH=" + bandWidth).append(LINE_SEPARATOR);  // 码率
        stringBuilder.append(indexPath);
        Files.write(Paths.get(file), stringBuilder.toString().getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
    }

    /**
     * 转码视频为m3u8
     *
     * @param source     源视频
     * @param destFolder 目标文件夹
     * @param config     配置信息
     * @throws IOException
     * @throws InterruptedException
     */
    public static void transcodeToM3u8(String source, String destFolder, TranscodeConfig config) throws IOException, InterruptedException {

        // 判断源视频是否存在
        if (!Files.exists(Paths.get(source))) {
            throw new IllegalArgumentException("文件不存在：" + source);
        }

        // 创建工作目录
        Path workDir = Paths.get(destFolder, "ts");
        Files.createDirectories(workDir);

        // 构建命令
        List<String> commands = new ArrayList<>();

        commands.add("ffmpeg");
        commands.add("-i");
        commands.add(source);                    // 源文件
        commands.add("-c:v");
        commands.add("libx264");                // 视频编码为H264
        commands.add("-c:a");
        commands.add("copy");                    // 音频直接copy
        commands.add("-hls_time");
        commands.add(config.getTsSeconds());    // ts切片大小
        commands.add("-hls_playlist_type");
        commands.add("vod");                    // 点播模式
        commands.add("-hls_segment_filename");
        commands.add("%06d.ts");                // ts切片文件名称

        if (StringUtils.hasText(config.getCutStart())) {
            commands.add("-ss");
            commands.add(config.getCutStart());    // 开始时间
        }
        if (StringUtils.hasText(config.getCutEnd())) {
            commands.add("-to");
            commands.add(config.getCutEnd());        // 结束时间
        }
        commands.add("index.m3u8");                                                        // 生成m3u8文件

        // 构建进程
        Process process = new ProcessBuilder()
                .command(commands)
                .directory(workDir.toFile())
                .start();

        // 读取进程标准输出
        new Thread(() -> {
            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    LOGGER.info(line);
                }
            } catch (IOException e) {
            }
        }).start();

        // 读取进程异常输出
        new Thread(() -> {
            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    LOGGER.info(line);
                }
            } catch (IOException e) {
            }
        }).start();


        // 阻塞直到任务结束
        if (process.waitFor() != 0) {
            throw new RuntimeException("视频切片异常");
        }

        // 切出封面
        if (!screenShots(source, String.join(File.separator, destFolder, "poster.jpg"), config.getPoster())) {
            throw new RuntimeException("封面截取异常");
        }

        // 获取视频信息
        final MediaInfo[] mediaInfo = {getMediaInfo(source)};
        if (mediaInfo[0] == null) {
            throw new RuntimeException("获取媒体信息异常");
        }

        // 生成index.m3u8文件
//        genIndex(String.join(File.separator, destFolder, "index.m3u8"), "ts/index.m3u8", mediaInfo[0].getFormat().getBitRate());

    }



    /**
     * 获取视频文件的媒体信息
     *
     * @param source
     * @return
     * @throws IOException
     * @throws InterruptedException
     */
    public static MediaInfo getMediaInfo(String source) throws IOException, InterruptedException {
        List<String> commands = new ArrayList<>();
        commands.add("ffprobe");
        commands.add("-i");
        commands.add(source);
        commands.add("-show_format");
        commands.add("-show_streams");
        commands.add("-print_format");
        commands.add("json");

        Process process = new ProcessBuilder(commands)
                .start();

        MediaInfo mediaInfo = null;

        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
            mediaInfo = new Gson().fromJson(bufferedReader, MediaInfo.class);
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (process.waitFor() != 0) {
            return null;
        }

        return mediaInfo;
    }

    /**
     * 截取视频的指定时间帧，生成图片文件
     *
     * @param source 源文件
     * @param file   图片文件
     * @param time   截图时间 HH:mm:ss.[SSS]
     * @throws IOException
     * @throws InterruptedException
     */
    public static boolean screenShots(String source, String file, String time) throws IOException, InterruptedException {

        List<String> commands = new ArrayList<>();
        commands.add("ffmpeg");
        commands.add("-i");
        commands.add(source);
        commands.add("-ss");
        commands.add(time);
        commands.add("-y");
        commands.add("-q:v");
        commands.add("1");
        commands.add("-frames:v");
        commands.add("1");
        commands.add("-f");
        commands.add("image2");
        commands.add(file);

        Process process = new ProcessBuilder(commands)
                .start();

        // 读取进程标准输出
        new Thread(() -> {
            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    LOGGER.info(line);
                }
            } catch (IOException e) {
            }
        }).start();

        // 读取进程异常输出
        new Thread(() -> {
            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    LOGGER.error(line);
                }
            } catch (IOException e) {
            }
        }).start();

        return process.waitFor() == 0;
    }
}

4.Controlle调用

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import com.erfou.minio.demo.config.TranscodeConfig;
import com.erfou.minio.demo.utils.FFmpegUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;


@RestController
@RequestMapping("/uploadController")
@Slf4j
public class UploadController {

    @Value("${app.video-folder}")
    private String videoFolder;

    private Path tempDir = Paths.get(System.getProperty("java.io.tmpdir"));

    /**
     * 上传视频进行切片处理，返回访问路径
     * @param video
     * @return
     * @throws IOException
     */
    @PostMapping("/upload")
    @CrossOrigin
    public Object upload (@RequestParam(name = "file") MultipartFile video) throws IOException {
        /**    参数传UUID去数据库查询需要转换的视频地址 进行入参
         public ResponseData upload (@RequestParam("uuid") String uuid) throws Exception {
         TranscodeConfig transcodeConfig = new TranscodeConfig();
         FastDfsFile fastDfsFile = sectionService.getSectionByUUID(uuid);
         if(fastDfsFile.getFastDfsFileUrl() == null){
         LOGGER.info("请上传视频！！");
         return ResponseData.warnWithMsg("请选择要上传的视频！");
         }

         MultipartFile video = UrlToMultipartFile.urlToMultipartFile(fastDfsFile.getFastDfsFileUrl());
         */
        TranscodeConfig transcodeConfig = new TranscodeConfig();
        log.info("文件信息：title={}, size={}", video.getOriginalFilename(), video.getSize());
        log.info("转码配置：{}", transcodeConfig);

        // 原始文件名称，也就是视频的标题
        String title = video.getOriginalFilename();

        // io到临时文件
        Path tempFile = tempDir.resolve(title);
        log.info("io到临时文件：{}", tempFile.toString());

        try {
            video.transferTo(tempFile);

            // 删除后缀
            title = title.substring(0, title.lastIndexOf(".")) + "-" + UUID.randomUUID().toString().replaceAll("-", "");

            // 按照日期生成子目录
            String today = DateTimeFormatter.ofPattern("yyyyMMdd").format(LocalDate.now());

            // 尝试创建视频目录
            Path targetFolder = Files.createDirectories(Paths.get(videoFolder, today, title));

            log.info("创建文件夹目录：{}", targetFolder);
            Files.createDirectories(targetFolder);

            // 执行转码操作
            log.info("开始转码");
            try {
                FFmpegUtils.transcodeToM3u8(tempFile.toString(), targetFolder.toString(), transcodeConfig);
            } catch (Exception e) {
                log.error("转码异常：{}", e.getMessage());
                Map<String, Object> result = new HashMap<>();
                result.put("success", false);
                result.put("message", e.getMessage());
                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(result);
            }

            // 封装结果
            Map<String, Object> videoInfo = new HashMap<>();
            videoInfo.put("title", title);
            videoInfo.put("m3u8", String.join("/", "", today, title, "ts/index.m3u8"));
            videoInfo.put("poster", String.join("/", "", today, title, "poster.jpg"));

            //返回数据
            Map<String, Object> result = new HashMap<>();
            result.put("success", true);
            result.put("data", videoInfo);
            return result;
        } finally {
            // 始终删除临时文件
            Files.delete(tempFile);
        }
    }
}

调用

5.Url转换MultipartFile的工具类

如controller中参数传的是URL 使用以下工具类转换一下即可
UrlToMultipartFile

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.lang.RandomStringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

public class UrlToMultipartFile {

    private static final Logger LOGGER = LoggerFactory.getLogger(UrlToMultipartFile.class);

    /**
     * inputStream 转 File
     */
    public static File inputStreamToFile(InputStream ins, String name) throws Exception{
        //System.getProperty("java.io.tmpdir")临时目录+File.separator目录中间的间隔符+文件名
        File file = new File(System.getProperty("java.io.tmpdir") + File.separator + name);
        OutputStream os = new FileOutputStream(file);
        int bytesRead;
        int len = 8192;
        byte[] buffer = new byte[len];
        while ((bytesRead = ins.read(buffer, 0, len)) != -1) {
            os.write(buffer, 0, bytesRead);
        }
        os.close();
        ins.close();
        return file;
    }

    /**
     * file转multipartFile
     */
    public static MultipartFile fileToMultipartFile(File file) {
        FileItemFactory factory = new DiskFileItemFactory(16, null);
        FileItem item=factory.createItem(file.getName(),"text/plain",true,file.getName());
        int bytesRead = 0;
        byte[] buffer = new byte[8192];
        try {
            FileInputStream fis = new FileInputStream(file);
            OutputStream os = item.getOutputStream();
            while ((bytesRead = fis.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new CommonsMultipartFile(item);
    }

    //url转MultipartFile
    public static MultipartFile urlToMultipartFile(String url) throws Exception {
        File file = null;
        MultipartFile multipartFile = null;
        try {
            HttpURLConnection httpUrl = (HttpURLConnection) new URL(url).openConnection();
            httpUrl.connect();
            file = UrlToMultipartFile.inputStreamToFile(httpUrl.getInputStream(),RandomStringUtils.randomAlphanumeric(8)+".mp4");
            LOGGER.info("---------"+file+"-------------");

            multipartFile = UrlToMultipartFile.fileToMultipartFile(file);
            httpUrl.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return multipartFile;
    }

}

四、播放测试

1.html

为了方便测试，写了一个简单的html，html只需要解压后，修改里面的src地址，设置为实际的m3u8播放地址

2.nginx配置

location /hls {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Headers X-Requested-With;
            add_header Access-Control-Allow-Methods GET,POST,PUT,DELETE,OPTIONS;
            
            types {  
                application/vnd.apple.mpegurl m3u8;  
                video/mp2t ts;  
            }
		    alias  D:/m3u8/hls/; #切片存放地址
            expires -1;
            add_header Cache-Control no-cache;  
    }

3.效果展示