利用nginx与ffmpeg搭建流媒体服务器过程详解

需求

本文介绍的是利用nginx和ffmpeg搭建流媒体服务器的过程。例如这种场景：公司内部需要同时观看在线直播时，如果每个人直接观看必然给出口带宽带来压力，影响正常访问外网的同事。所以可以在内网通过nginx+ffmpeg拉一路直播流，然后内网的用户访问内网的这台流媒体服务器即可。通过nginx+ffmpeg还可以实现推流、拉流、转推甚至利用FFmpeg实时切片、视频处理等，实现一套直播服务模型。

环境

系统环境：CentOS release 6.7 (Final)

步骤

安装ffmpeg

安装过程参考官方文档：https://trac.ffmpeg.org/wiki/CompilationGuide

安装Nginx

这里采用了编译安装的方式，需要注意的是：一定要添加nginx-rtmp-module模块

git clone https://github.com/arut/nginx-rtmp-module.git#编译的时候添加nginx-rtmp-module模块--add-module=path_of_/nginx-rtmp-module

我的nginx编译参数

./configure --prefix=/opt/nginx --user=nginx --group=nginx --with-http_ssl_module --with-http_gzip_static_module --with-http_stub_status_module --with-pcre=/opt/software/pcre-8.35 --with-zlib=/opt/software/zlib-1.2.8 --with-openssl=/opt/software/openssl-1.0.1i --add-module=/opt/software/nginx-1.8.1/modules/nginx-rtmp-module

修改nginx配置文件nginx.conf

user nginx;worker_processes 2;error_log logs/error.log;#error_log logs/error.log notice;#error_log logs/error.log info;#pid  logs/nginx.pid;events { use epoll; worker_connections 1024;}#切换自动推送(多 worker 直播流)模式。默认为 offrtmp_auto_push on;#当 worker 被干掉时设置自动推送连接超时时间。默认为 100 毫秒rtmp_auto_push_reconnect 1s;rtmp {  server {   listen 1935;     #直播流配置  application myapp {    live on;   }    # hls切片  application hls {    live on;    hls on;    hls_path /tmp/hls;   }    # 拉流  application qiniu {   live on;   push rtmp://拉流地址;  }   # 转推  application pull {   live on;   pull rtmp://转推地址;  }    # rtmp日志设置  access_log logs/rtmp_access.log ; } }http { include  mime.types; default_type application/octet-stream;  log_format main '$remote_addr - $remote_user [$time_local] "$request" '      '$status $body_bytes_sent "$http_referer" '      '"$http_user_agent" "$http_x_forwarded_for"';       access_log logs/access.log main;  sendfile  on; #tcp_nopush  on; keepalive_timeout 65; gzip on;  server {  listen  80;  server_name localhost;  charset utf-8;  access_log logs/host.access.log main;    location /stat {  rtmp_stat all;   rtmp_stat_stylesheet stat.xsl;  }    location /stat.xsl {   root /opt/software/nginx-rtmp-module/;  }    location / {   root /opt/www/html;   index index.html index.htm;  }    location /hls {    types {     application/vnd.apple.mpegurl m3u8;     video/mp2t ts;    }    root /tmp;    add_header Cache-Control no-cache;   }     #error_page 404    /404.html;  # redirect server error pages to the static page /50x.html   error_page 500 502 503 504 /50x.html;  location = /50x.html {   root html;  } }include vhosts/*.conf;}