目录

CentOS 7 安装 ffmpeg

docker安装nginx-rtmp

nginx-rtmp配置文件详解

java案例

pom依赖

前端案例(vue)

javacv相关文档和博客

名称 版本
jdk 1.8
ffmpeg ffmpeg version 4.1
javacv (jar包,拉取推送视频)
<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacv-platform</artifactId>
    <version>1.5.1</version>
</dependency>
alfg/nginx-rtmp ( docker安装 ) latest

CentOS 7 安装 ffmpeg

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。我们要用它拉取rtmp 转换成可视频,放入nginx。

//1. 下载
wget https://johnvansickle.com/ffmpeg/release-source/ffmpeg-4.1.tar.xz
//2. 解压
tar -xvJf ffmpeg-4.1.tar.xz
//3. 配置在configure存在的文件夹内运行
./configure --prefix=/usr/local/ffmpeg
//如果第3 行的命令打印一下信息,
/* If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.*/
--------------------------如果第三行的命令打印以上信息,你就需要安装yasm------------------
//4.1 下载yasm
wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz 
//4.2 解压yasm
tar zxvf yasm-1.3.0.tar.gz -c /usr/local/software/yasm
//4.3 在configure 所在的文件夹内运行下命令
./configure
//4.4 编译,安装 yasm
make install 
//4.5 修改配置文件
 vim /etc/ld.so.conf
//加入一下信息
include ld.so.conf.d/*.conf
/usr/local/ffmpeg/lib/
-------------------------------------------结束-----------------------------------
//6. 编译安装ffmpeg(在ffmpeg文件夹内)
make install
//查看是否安装成功
ffmpeg -version

docker安装nginx-rtmp

注意:我们下载的是nginx-rtmp。

          这个nginx解析不了rtmp协议

nginx-rtmp配置文件详解 

daemon off;
error_log /dev/stdout info;
events {
    worker_connections 1024;
rtmp {
    server {
        listen 1935;
        chunk_size 4000; #默认流切片大小
        #后端会调用该地址推送rtmp流
        #地址例子: rtmp://localhost:1935/stream/test 
        application stream {
            live on;
            #ffmpeg会使用一下命令 对推送的视频流进行格式转换,以及切片
            #切片就是将一段视频切割成多个 ts格式的视频文件。有一个xxx.m3u8的文件管理这些ts
            #我们只需要让前端访问这个xxx.m3u8的文件即可播放.ts视频
            #并调用rtmp://localhost:1935/hls这个地址保存视频
            exec ffmpeg -i rtmp://localhost:1935/stream/$name
              -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 2500k -f flv -g 30 -r 30 -s 1280x720 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_720p2628kbs
              #-c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 1000k -f flv -g 30 -r 30 -s 854x480 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_480p1128kbs
              #-c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 750k -f flv -g 30 -r 30 -s 640x360 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_360p878kbs
              #-c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 400k -f flv -g 30 -r 30 -s 426x240 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_240p528kbs
              #-c:a libfdk_aac -b:a 64k -c:v libx264 -b:v 200k -f flv -g 15 -r 15 -s 426x240 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_240p264kbs;
        application hls {
            live on;
            hls on;
            hls_fragment_naming system;
            hls_fragment 5;
            hls_playlist_length 10;
            #我们推送的流会保存到nginx的目录下/opt/data/hls
            hls_path /opt/data/hls;  
            hls_nested on;
            hls_variant _720p2628kbs BANDWIDTH=2628000,RESOLUTION=1280x720;
            #hls_variant _480p1128kbs BANDWIDTH=1128000,RESOLUTION=854x480;
            #hls_variant _360p878kbs BANDWIDTH=878000,RESOLUTION=640x360;
            #hls_variant _240p528kbs BANDWIDTH=528000,RESOLUTION=426x240;
            #hls_variant _240p264kbs BANDWIDTH=264000,RESOLUTION=426x240;
http {
    root /www/static;
    sendfile off;
    tcp_nopush on;
    server_tokens off;
    access_log /dev/stdout combined;
    # Uncomment these lines to enable SSL.
    # ssl_ciphers         HIGH:!aNULL:!MD5;
    # ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
    # ssl_session_cache   shared:SSL:10m;
    # ssl_session_timeout 10m;
    server {
        listen 80;
        # Uncomment these lines to enable SSL.
        # Update the ssl paths with your own certificate and private key.
        # listen 443 ssl;
        # ssl_certificate     /opt/certs/example.com.crt;
        # ssl_certificate_key /opt/certs/example.com.key;
        location /hls {
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            root /opt/data;
            add_header Cache-Control no-cache;
            add_header Access-Control-Allow-Origin *;
        #前端调用这个地址 播放视频
        #例子 http://localhost/live/test.m3u8,就会去/opt/data/hls下找这个test.m3u8的文件
        location /live {
          alias /opt/data/hls;
          types {
              application/vnd.apple.mpegurl m3u8;
              video/mp2t ts;
          add_header Cache-Control no-cache;
          add_header Access-Control-Allow-Origin *;
        location /stat {
            rtmp_stat all;
            rtmp_stat_stylesheet stat.xsl;
        location /stat.xsl {
            root /www/static;
        location /crossdomain.xml {
            default_type text/xml;
            expires 24h;
//在root下创建工作目录
mkdir /root/nginx-rtmp/data
mkdir /root/nginx-rtmp/conf  #将上面的那个配置文件复制到conf下用来挂载使用
//运行镜像
docker run -p 1935:1935 -p 80:80 --name nginx-rtmp \  #要用1935(默认端口)推流
-v /root/nginx-rtmp/conf/nginx.conf:/etc/nginx/nginx.conf.template \ #挂载配置文件方便修改
-v /root/nginx-rtmp/data:/opt/data/hls \ #nginx默认将我们推送的视频流放到hls所以挂在该目录。方便检查
-d alfg/nginx-rtmp
 

视频流保存nginx中的数据例子。

 这些数据是通过java推送的,java推送的demo在下面

test_XXX等文件夹中保存的数据格式

名字是毫秒单位的时间戳,这些视频新的会替换掉旧的并不会越来越多.前端调用test.m3u8播放这些ts切片文件

java案例 

pom依赖

        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>javacv-platform</artifactId>
            <version>1.5.1</version>
        </dependency>
import lombok.extern.slf4j.Slf4j; import org.bytedeco.ffmpeg.avcodec.AVPacket; import org.bytedeco.ffmpeg.avformat.AVFormatContext; import org.bytedeco.ffmpeg.global.avcodec; import org.bytedeco.javacv.FFmpegFrameGrabber; import org.bytedeco.javacv.FFmpegFrameRecorder; import org.bytedeco.javacv.FrameRecorder; import java.io.IOException; import java.util.HashMap; import java.util.Map; @Slf4j public class ConvertVideoPakcet { private static final Map<String,ConvertVideoPakcet> convertVideoPakcets = new HashMap<>(); private FFmpegFrameGrabber grabber = null; private FFmpegFrameRecorder record = null; private int width = -1, height = -1; // 视频参数 private int audiocodecid; private int codecid; private double framerate;// 帧率 private int bitrate;// 比特率 // 音频参数 private int audioChannels; private int audioBitrate; private int sampleRate; //控制程序循环 private Boolean flag = true; private static ConvertVideoPakcet get(String deviceId){ return convertVideoPakcets.get(deviceId); public static Boolean start(String deviceId,String formUrl,String toUrl){ if(null != get(deviceId)) return true; final ConvertVideoPakcet convertVideoPakcet = new ConvertVideoPakcet(); convertVideoPakcets.put(deviceId,convertVideoPakcet); new Thread(()->{ log.info("start device"); try { convertVideoPakcet.rtsp(formUrl).rtmp(toUrl).start(); } catch (IOException e) { log.error("start dvice error,{}",e); } catch (Exception e) { e.printStackTrace(); }).start(); log.info("start device finish!"); return true; * 停止当前直播 * @param id * @return public static Boolean stop(String id){ log.info("stop device ,{}",id); ConvertVideoPakcet convertVideoPakcet = get(id); if(null != convertVideoPakcet){ convertVideoPakcets.remove(id); return convertVideoPakcet.stop(); return false; * 拉取摄像头或者其他rtmp视频源 * @param src rtsp数据源地址 * @author JW * @throws Exception private ConvertVideoPakcet rtsp(String src) throws Exception { // 采集/抓取器 grabber = new FFmpegFrameGrabber(src); grabber.setOption("rtsp_transport", "tcp"); grabber.start();// 开始之后ffmpeg会采集视频信息,之后就可以获取音视频信息 if (width < 0 || height < 0) { width = grabber.getImageWidth(); height = grabber.getImageHeight(); // 视频参数 audiocodecid = grabber.getAudioCodec(); log.warn("音频编码:{}",audiocodecid); codecid = grabber.getVideoCodec(); framerate = grabber.getVideoFrameRate();// 帧率 bitrate = grabber.getVideoBitrate();// 比特率 // 音频参数 // 想要录制音频,这三个参数必须有:audioChannels > 0 && audioBitrate > 0 && sampleRate > 0 audioChannels = grabber.getAudioChannels(); audioBitrate = grabber.getAudioBitrate(); if (audioBitrate < 1) { audioBitrate = 128 * 1000;// 默认音频比特率 return this; * rtmp输出推流到nginx媒体流服务器 * @param out t\ rtmp媒体流服务器地址 * @author JW * @throws IOException private ConvertVideoPakcet rtmp(String out) throws IOException { // 录制/推流器 record = new FFmpegFrameRecorder(out, width, height); record.setVideoOption("crf", "30"); record.setGopSize(2); record.setFrameRate(framerate); record.setVideoBitrate(bitrate); record.setAudioChannels(audioChannels); record.setAudioBitrate(audioBitrate); record.setSampleRate(sampleRate); AVFormatContext fc = null; // if (out.indexOf("rtmp") >= 0 || out.indexOf("flv") > 0) { // 封装格式flv record.setFormat("flv"); record.setAudioCodecName("aac"); record.setVideoCodec(codecid); fc = grabber.getFormatContext(); // } record.start(fc); return this; * 转封装 * @author eguid * @throws IOException private void start() throws IOException { //刷新开始的测试数据 if(null != grabber) grabber.flush(); while (flag) { AVPacket pkt = null; try { // 没有解码的音视频帧 pkt = grabber.grabPacket(); if (pkt == null || pkt.size() <= 0 || pkt.data() == null) { continue; // 不需要编码直接把音视频帧推出去 record.recordPacket(pkt); avcodec.av_packet_unref(pkt); try { Thread.sleep(0,1000); } catch (InterruptedException e) { log.error("推流发生等待异常,{}",e); } catch (Exception e) { log.error("推流发生异常,{}",e); private Boolean stop() { //控制退出循环 flag = false; if(null != record){ try { record.release(); } catch (FrameRecorder.Exception e) { log.error("stop record error ,{}",e); return false; if(null != grabber){ try { grabber.release(); } catch (Exception e) { log.error("stop grabber error ,{}",e); return false; return true; public static void main(String[] args) throws Exception, IOException { // 运行,设置视频源地址,拉取的视频存在的地址 new ConvertVideoPakcet().rtsp("rtmp://media3.scctv.net/live/scctv_800") //我们要推送到的nginx的地址 .rtmp("rtmp://localhost:1935/stream/test").start();

前端案例(vue)

//安装依赖
npm install --save hls.js
//标签 案例
<video ref=""videoRef" width="400" controls></video>
<script>
import Hls from 'hls.js'; 
export default {
    mounted: function() {
      var hls = new Hls();
      hls.loadSource('http://localhost/live/test.m3u8');
      hls.attachMedia(this.$refs.videoRef);
      hls.on(Hls.Events.MANIFEST_PARSED,function() {
        this.$refs.videoRef.play();
</script>

地址详解: 

javacv相关文档和博客

一位大佬写的关于javacv的博客

javacv的 接口文档

nginx这个不是必须的,其实也可以在后端切片后。使用websocket长连接向前端推送 

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