nginx rtmp HLS直播 | 易学教程

二、安装Nginx相关模块

1.环境准备

yum install –y pcre pcre-devel

yum install –y zlib zlib-devel

yum -y install openssl openssl-devel

2.下载nginx及rtmp模块

wget http://nginx.org/download/nginx-1.6.2.tar.gz

tar xzvf nginx_1.6.2.tar.gz

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

3.编译nginx-rtmp

./configure --prefix=/usr/local/nginx --add-module=../nginx-rtmp-module --with-http_stub_status_module

如果需要安装pcre，则 yum -y install pcre-devel openssl openssl-devel

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

++++++++测试nginx是否安装正确+++++++++++

#cd /usr/local/nginx

#./sbin/nginx -c ./conf/nginx.conf

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;
      }

}

从网上下载一款RTMP推流工具，我使用的OBS（Open Broadcaster Software），开始推流rtmp://your_ip/myapp/test，使用播放器（http://www.cutv.com/demo/live_test.swf）查看是否正常。

++++++++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;
        }
    }
}

使用VLC或iPAD上的播放器进行查看 http://yourip/hls/test.m3u8。

++++++++测试FFMPEG转码功能+++++++++++

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;

           exec /opt/ffmpeg/bin/ffmpeg -i rtmp://localhost/myapp/$name
             -c:a copy -c:v libx264 -b:v 512K -g 30 -f flv rtmp://localhost/hls/$name_low;
        }

        application hls {

live on;

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

hls_variant _hi BANDWIDTH=640000;

}
}
}

#HTTP
http{
server {
listen 80;

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

使用ffmpeg转码时，

exec /opt/ffmpeg/bin/ffmpeg -i rtmp://localhost/myapp/$name
-c:a copy -c:v libx264 -b:v 512K -g 30 -f flv rtmp://localhost/hls/$name_low;

仅对视频进行转码，音频不做处理，同时向流从myapp转推到hls， hls_variant会生成一个多码率的m3u8文件，同时把切片文件存放到test_low目录下，访问多码率时，直接访问http://yourip/hls/test.m3u8，根据这个m3u8中的实现的内容访问相应的码流，在本例中，实际码流URL为http://yourip/hls/test_low/index.m3u8

来源：oschina

链接：https://my.oschina.net/u/1983790/blog/489508

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hls

rtmp

nginx

m3u8