使用Nginx+FFMPEG搭建HLS直播转码服务器

目的:使Nginx支持Rtmp协议推流，并支持hls分发功能及FFMPEG转码多码率功能。

一、准备工作
模块:nginx-rtmp-module-master(支持rtmp协议)
下载地址:
http://nginx.org
https://github.com/arut/nginx-rtmp-module

1、安装依赖包:
#yum -y install gcc glibc glibc-devel make nasm pkgconfig lib-devel openssl-devel expat-devel gettext-devel libtool mhash.x86_64 perl-Digest-SHA1.x86_64 gcc-c++ wget xz perl-ExtUtils-MakeMaker package libcurl-devel unzip

2、安装Git工具:
#mkdir soft-source
#cd soft-source
#wget http://codemonkey.org.uk/projects/git-snapshots/git/git-latest.tar.xz

#xz -d git-latest.tar.xz
#tar xvf git-latest.tar
#cd git-2016-06-20/
#autoconf
#./configure
#make && make install
# git --version
git version 2.9.0
#cd ..

3、安装ffmpeg及其依赖包：
++++++++Yasm+++++++++++
#wget http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz
#tar xzvf yasm-1.2.0.tar.gz
#cd yasm-1.2.0
#./configure
#make
#make install
#cd ..
++++++++x264+++++++++++
#git clone git://git.videolan.org/x264
#cd x264
#./configure --enable-shared
#make
#make install
#cd ..

++++++++LAME+++++++++++
#wget http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
#tar xzvf lame-3.99.5.tar.gz
#cd lame-3.99.5
#./configure --enable-nasm
#make
#make install
#cd ..
++++++++libogg+++++++++++
#wget http://downloads.xiph.org/releases/ogg/libogg-1.3.0.tar.gz
#tar xzvf libogg-1.3.0.tar.gz
#cd libogg-1.3.0
#./configure
#make
#make install
#cd ..
++++++++libvorbis+++++++++++

echo /usr/local/lib >> /etc/ld.so.conf; ldconfig

#wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.3.tar.gz
#tar xzvf libvorbis-1.3.3.tar.gz
#cd libvorbis-1.3.3
#./configure
#make
#make install
#cd ..
++++++++libvpx+++++++++++

git clone https://github.com/webmproject/libvpx

cd libvpx

./configure --enable-shared

make

make install

cd ..

++++++++FAAD2+++++++++++
#wget http://downloads.sourceforge.net/project/faac/faad2-src/faad2-2.7/faad2-2.7.tar.gz
#tar zxvf faad2-2.7.tar.gz
#cd faad2-2.7
#./configure
#make
#make install
#cd ..
++++++++FAAC+++++++++++
#wget http://downloads.sourceforge.net/project/faac/faac-src/faac-1.28/faac-1.28.tar.gz
#tar zxvf faac-1.28.tar.gz
#cd faac-1.28

# sed -i 's@^char *strcasestr@//char *strcasestr@' ./common/mp4v2/mpeg4ip.h

#./configure
#make
#make install
#cd ..

++++++++Xvid+++++++++++
#wget http://downloads.xvid.org/downloads/xvidcore-1.3.2.tar.gz
#tar zxvf xvidcore-1.3.2.tar.gz
#cd xvidcore/build/generic
#./configure
#make
#make install
cd ../../../

++++++++ffmpeg+++++++++++
#git clone git://source.ffmpeg.org/ffmpeg
#cd ffmpeg
#./configure --prefix=/opt/ffmpeg/ --enable-version3 --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libxvid --enable-shared --enable-gpl --enable-postproc --enable-nonfree --enable-avfilter --enable-pthreads
#make && make install
#cd ..

修改/etc/ld.so.conf如下:
include ld.so.conf.d/*.conf
/lib
/lib64
/usr/lib
/usr/lib64
/usr/local/lib
/usr/local/lib64
/opt/ffmpeg/lib

#ldconfig

【说明】

动态装入器找到共享库要依靠两个文件 — /etc/ld.so.conf 和 /etc/ld.so.cache。

安装完成后，ffmpeg位于/opt/ffmpeg/bin目录下。

二、安装Nginx相关模块

1.环境准备

yum install pcre pcre-devel -y

yum install zlib zlib-devel -y

2.下载nginx及rtmp模块

#cd /root/soft-source/

#wget http://nginx.org/download/nginx-1.6.3.tar.gz

#tar xzvf nginx-1.6.3.tar.gz

#git clone git://github.com/arut/nginx-rtmp-module.git

3.编译nginx-rtmp

cd nginx-1.6.3

yum -y install libxml2-devel libxslt-devel

./configure --prefix=/usr/local/nginx --add-module=/root/soft-source/nginx-rtmp-module --with-http_stub_status_module --with-http_xslt_module

make

make install

安装完成后，nginx位于/usr/local/nginx/sbin目录下，配置文件nginx.conf在/usr/local/nginx/conf目录下

vi /etc/rc.d/init.d/nginx #编辑启动文件添加下面内容

#!/bin/bash
# Tengine Startup script# processname: nginx
# chkconfig: - 85 15
# description: nginx is a World Wide Web server. It is used to serve
# pidfile: /var/run/nginx.pid
# config: /usr/local/nginx/conf/nginx.conf
nginxd=/usr/local/nginx/sbin/nginx
nginx_config=/usr/local/nginx/conf/nginx.conf
nginx_pid=/usr/local/nginx/logs/nginx.pid
RETVAL=0
prog="nginx"
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
[ -x $nginxd ] || exit 0
# Start nginx daemons functions.
start() {
if [ -e $nginx_pid ];then
echo "tengine already running...."
exit 1
fi
echo -n $"Starting $prog: "
daemon $nginxd -c ${nginx_config}
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
return $RETVAL
}
# Stop nginx daemons functions.
stop() {
echo -n $"Stopping $prog: "
killproc $nginxd
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /usr/local/nginx/logs/nginx.pid
}
reload() {
echo -n $"Reloading $prog: "
#kill -HUP `cat ${nginx_pid}`
killproc $nginxd -HUP
RETVAL=$?
echo
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
reload)
reload
;;
restart)
stop
start
;;

status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $prog {start|stop|restart|reload|status|help}"
exit 1
esac
exit $RETVAL

保存退出

chmod 775 /etc/rc.d/init.d/nginx   #赋予文件执行权限
chkconfig  --level 012345 nginx on   #设置开机启动
/etc/rc.d/init.d/nginx start

关闭软件防火墙：

chkconfig iptables off iptables
service iptables stop

打开网页http://localhost，如果显示Welcome表示安装下正确，如果没有显示，请查看一下nginx的日志。

++++++++测试RTMP+++++++++++

修改/usr/local/nginx/conf/nginx.conf的内容如下：

#debug
daemon off;
master_process off;

error_log ./error.log debug;
events{
worker_connections 1024;
}

rtmp{
    server {
        listen 1935;
        chunk_size 4000;

        #live
        application myapp {
            live on;
      }

}

模拟测试：
用ffmpeg产生一个模拟直播源，向rtmp服务器推送
/opt/ffmpeg/bin/ffmpeg -i /root/fenxiang.mp4 -c:a libfaac -ar 44100 -ab 48k -c:v libx264 -f flv rtmp://10.10.6.237/myapp/test

注意，源文件必须是H.264+AAC编码的。

10.10.6.237是运行nginx的服务器IP

下载这个软件进行测试：

VLC media player
进行打开串流播放尝试。

++++++++测试HLS切片功能+++++++++++

修改/usr/local/nginx/conf/nginx.conf的内容如下：

#debug
daemon off;
master_process off;

error_log ./error.log debug;
events{
worker_connections 1024;
}

rtmp{
    server {
        listen 1935;
        chunk_size 4000;

        #live
        application myapp {
            live on;

            hls on;
            hls_path /tmp/hls;
            hls_fragment 2s;
            hls_playlist_length 6s;

}
}
}

#HTTP
http{
server {
listen 80;

        #welcome
        location / {
            root   html;
            index index.html index.htm;
        }

        #hls
        location /hls {
            types {
                application/vnd.apple.mpegusr m3u8;
                video/mp2t ts;
            }
            root /tmp;
            add_header Cache-Control no-cache;
        }

　　 location /stat {
       　　 rtmp_stat all;
        　　allow 127.0.0.1;
    　　}
　　 location /nclients
    　　{
        　　proxy_pass http://127.0.0.1/stat;
        　　xslt_stylesheet /root/soft-source/nginx-rtmp-module/stat.xsl app='$arg_app' name='$arg_name';
        　　add_header Refresh "3; $request_uri";
    　　}
    }
}

使用VLC或iPAD上的播放器进行查看 http://10.10.6.237/hls/test.m3u8。打完，收工！

http://10.10.6.237/stat

根据直播频道访问以下地址：
http://10.10.6.237/nclients?app=myapp&name=channel1