37.FFmpeg+OpenCV直播推流（nginx伺服器搭建和測試）

介紹

Nginx是一款輕量級的Web伺服器反向代理伺服器及電子郵件（IMAP/POP3）代理伺服器，并在一個BSD-like 協定下發行。其特點是占有記憶體少，并發能力強。今天來分享一下如何安裝配置nginx伺服器，并應用于直播推流中。

開發環境

Ubuntu 16 64位+Windows10

安裝

1.root使用者登入Ubuntu，使用如下指令下載下傳nginx

wget http://nginx.org/download/nginx-1.12.1.tar.gz           

2.nginx依賴于一些開源庫，這些我們需要下載下傳下來

apt install  libssl-dev
注意zlib1g   g前邊是個數字1不是字母l
apt install zlib1g-dev
apt install libpcre3-dev
apt install gcc
apt install g++           

3.接下來将nginx解壓

tar -xvf nginx-1.12.1.tar.gz            

4.下載下傳rtmp子產品

使用git下載下傳，沒有下載下傳git先安裝

apt install git           

在github上找到nginx-rtmp-module

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

将這個module添加到nginx上

./configure --add-module=/root/nginx-1.12.1/nginx-rtmp-module           

5.開始編譯

make            

可能在系統中已經安裝了nginx,為了防止無法覆寫，先rm

這是個預設安裝目錄
rm -r /usr/local/nginx/           

6.安裝

make install           

然後進入到usr/local/nginx目錄

注意這是root根目錄下的

cd usr/local/nginx/sbin/           

7.執行nginx

./nginx           

8.檢視是否已運作

ps -ef|grep nginx           

在浏覽器上輸入ip檢視如果顯示welcome to nginx表示已經運作成功

9.rtmp配置

進入nginx安裝目錄：usr/local/nginx/conf修改nginx.conf檔案（注意是安裝目錄，不要傻傻的去解壓包中修改）

rtmp {
        server {
                listen 1935;
                chunk_size 4096;
                application live {
                        live on;
                }
        }
}           

添加了這個之後，就可以推流了，我們使用ffmepg推一把試試.注意live是什麼，端口是什麼

ffmpeg -i C:\Users\renzhenming\Desktop\一首《秋意濃》打動阿琴冷酷的心，星爺太會泡妞了.mp4 -f flv -c copy rtmp://192.168.1.108/live           

然後通過vcl播放器，輸入rtmp://192.168.1.108/live可以看到播放成功

然後在設定一把通過浏覽器監聽nginx狀态,還是在nginx.conf中添加

server {
        listen 8080;
        location /stat {
            rtmp_stat all;
            rtmp_stat_stylesheet stat.xsl;
        }
        location /stat.xsl {
                //樣式表的位置，這個表是nginx-rtmp-module中的
                root /root/nginx-1.12.1/nginx-rtmp-module;
        }
    }           

這樣一來，我們通過浏覽器就可以看到推流的狀态了

在浏覽器中輸入

http://192.168.xx.xx:8080/stat           

完整的nginx.conf檔案如下,注意看我們添加的配置放置的位置

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}

rtmp {
        server {
                listen 1935;
                chunk_size 4096;
                application live {
                        live on;
                }
        }
}

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  0;
    keepalive_timeout  65;

    #gzip  on;
    server {
        listen 8080;
        location /stat {
            rtmp_stat all;
            rtmp_stat_stylesheet stat.xsl;
        }
        location /stat.xsl {
                root /root/nginx-1.12.1/nginx-rtmp-module;
        }
    }
    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

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

        #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;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

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


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

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

}
           

至此，nginx配置完畢