#user  nobody;
worker_processes  auto;

#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;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile off;
    tcp_nopush on;
    aio on;
    directio 512;

    #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       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

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

            # Disable cache
            add_header Cache-Control no-cache;

            # CORS setup
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
            add_header 'Access-Control-Allow-Headers' 'Range';

            # allow CORS preflight requests
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' '*';
                add_header 'Access-Control-Allow-Headers' 'Range';
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }
        }

        location /stat {
            rtmp_stat all;
            allow 127.0.0.1;
            rtmp_stat_stylesheet stat.xsl;
        }

        location /stat.xsl {
            # you can move stat.xsl to a different location
            # under linux you could use /var/user/www for example
            root html/stats/;
        }

        location /views {
            add_header Access-Control-Allow-Origin *;
            proxy_pass http://127.0.0.1/stat;
            xslt_stylesheet html/nclients.xsl app='$arg_app' name='$arg_name';
            add_header Refresh "3; $request_uri";
        }

        location /status {
            add_header Access-Control-Allow-Origin *;
            proxy_pass http://127.0.0.1/stat;
            xslt_stylesheet html/status.xsl app='$arg_app' name='$arg_name';
            add_header Refresh "3; $request_uri";
        }

        location /hls {

            #alias /tmp/stream/hls;

            types {
                application/vnd.apple.mpegurl m3u8;
            }

            root /tmp/stream/;

            add_header Cache-Control no-cache; # Prevent caching of HLS fragments
            add_header Access-Control-Allow-Origin *; # Allow web player to access our playlist
        }

        location /dash {
            alias /tmp/stream/dash;

            # necessary if media files contain more than one DASH fragment
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Credentials' 'true';
                add_header 'Access-Control-Allow-Methods' 'GET, OPTIONS';

                # Custom headers and headers various browsers *should* be OK with but aren't
                add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';

                # Tell client that this pre-flight info is valid for 20 days
                add_header 'Access-Control-Max-Age' 1728000;

                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                add_header 'Access-Control-Allow-Origin' '*';

                return 200;
            }

            if ($request_method = 'GET') {
                add_header 'Access-Control-Allow-Origin' '*';
                add_header 'Access-Control-Allow-Credentials' 'true';
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
                add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
            }

        }

        #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;
    #    }
    #}

}

rtmp {
    server {
        listen 1935;
        chunk_size 4000;

        application live {
            live on;
            idle_streams off;

            #exec ffmpeg -i rtmp://localhost/live/$name
            #-c:v libx264 -profile:v baseline -b:v 128K -vf "scale=360:trunc(ow/a/2)*2" -f flv -c:a #aac -ac 1 #-strict -2 -b:a 32k rtmp://localhost/hls/$name_low
            #-c:v libx264 -profile:v baseline -b:v 256K -vf "scale=480:trunc(ow/a/2)*2" -f flv -c:a #aac -ac 1 #-strict -2 -b:a 96k rtmp://localhost/hls/$name_mid
            #-c:v libx264 -profile:v baseline -b:v 512K -vf "scale=720:trunc(ow/a/2)*2" -f flv -c:a #aac -ac 1 #-strict -2 -b:a 128k rtmp://localhost/hls/$name_hi;

            #exec ffmpeg -i rtmp://localhost/live/$name
            #-c:v libx264 -profile:v baseline -b:v 512K -vf "scale=720:trunc(ow/a/2)*2" -f flv -c:a #aac -ac 1 #-strict -2 -b:a 128k rtmp://localhost/hls/$name;

            # Once receive stream, transcode for adaptive streaming
            # This single ffmpeg command takes the input and transforms
            # the source into 4 different streams with different bitrate
            # and quality. P.S. The scaling done here respects the aspect
            # ratio of the input.
            exec ffmpeg -v verbose -i rtmp://localhost/$app/$name -async 1 -vsync -1
            -c:v libx264 -c:a aac -b:v 256k -b:a 32k -vf "scale=480:trunc(ow/a/2)*2" -tune zerolatency -preset veryfast -crf 23 -f flv rtmp://localhost/hls/$name_low
            -c:v libx264 -c:a aac -b:v 768k -b:a 96k -vf "scale=720:trunc(ow/a/2)*2" -tune zerolatency -preset veryfast -crf 23 -f flv rtmp://localhost/hls/$name_mid
            -c:v libx264 -c:a aac -b:v 1024k -b:a 128k -vf "scale=960:trunc(ow/a/2)*2" -tune zerolatency -preset veryfast -crf 23 -f flv rtmp://localhost/hls/$name_high
            -c:v libx264 -c:a aac -b:v 1920k -b:a 128k -vf "scale=1280:trunc(ow/a/2)*2" -tune zerolatency -preset veryfast -crf 23 -f flv rtmp://localhost/hls/$name_hd720;

            recorder videos {
                record all manual;
                record_max_size 51200K;
                record_path /usr/local/nginx/html;
                exec_record_done /ftp_bash_script.sh $name.flv;
            }
            recorder preview {
                record keyframes;
                record_path /var/rec;
                record_interval 5s;
                exec_record_done ffmpeg -i http://127.0.0.1/hls/$name.m3u8 -vcodec png  -vframes 1 -an -f rawvideo -s 190x100 -y /usr/local/nginx/html/scr/scr_$name.png;
                exec_record_done ffmpeg -i http://127.0.0.1/hls/$name.m3u8 -vcodec png  -vframes 1 -an -f rawvideo -s 380x200 -y /usr/local/nginx/html/scr/scr_$name@x2.png;
                exec_record_done ffmpeg -i http://127.0.0.1/hls/$name.m3u8 -vcodec png  -vframes 1 -an -f rawvideo -s 1280x720 -y /usr/local/nginx/html/scr/scr_$name@hd.png;
            }
        }
        application hls {

            live on;
            hls on;

            #hls_fragment 6s;
            #hls_playlist_length 10s;
            # disable consuming the stream from nginx as rtmp
            #deny play all;
            #hls_nested on;

            #hls_variant _low BANDWIDTH=160000;
            #hls_variant _mid BANDWIDTH=320000;
            #hls_variant _hi  BANDWIDTH=640000;

            hls_path /tmp/stream/hls;

            # Instruct clients to adjust resolution according to bandwidth
            hls_variant _low BANDWIDTH=288000; # Low bitrate, sub-SD resolution
            hls_variant _mid BANDWIDTH=448000; # Medium bitrate, SD resolution
            hls_variant _high BANDWIDTH=1152000; # High bitrate, higher-than-SD resolution
            hls_variant _hd720 BANDWIDTH=2048000; # High bitrate, HD 720p resolution
            #hls_variant _src BANDWIDTH=4096000; # Source bitrate, source resolution

        }

        # MPEG-DASH is similar to HLS

        application dash {
            live on;
            dash on;
            dash_path /tmp/stream/dash;
        }
    }
}