#daemon off;

error_log /dev/stdout info;

events {
    worker_connections 1024;
}

rtmp {
    server {
        listen ${RTMP_PORT};
        chunk_size 4000;

        application stream {
            live on;

            exec ffmpeg -i rtmp://localhost:1935/stream/$name
                # 4K (2160p) - 比特率设置为 20Mbps
                -c:a libfdk_aac -b:a 192k -c:v libx264 -b:v 20000k -f flv -g 60 -r 60 -s 3840x2160 -preset superfast -profile:v high rtmp://localhost:1935/hls/$name_2160p20000kbs
                # 2K (1440p) - 比特率设置为 12Mbps
                -c:a libfdk_aac -b:a 192k -c:v libx264 -b:v 12000k -f flv -g 60 -r 60 -s 2560x1440 -preset superfast -profile:v high rtmp://localhost:1935/hls/$name_1440p12000kbs
                # 1080p - 比特率设置为 6Mbps
                -c:a libfdk_aac -b:a 192k -c:v libx264 -b:v 6000k -f flv -g 60 -r 60 -s 1920x1080 -preset superfast -profile:v high rtmp://localhost:1935/hls/$name_1080p6000kbs
                # 720p
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 2500k -f flv -g 30 -r 30 -s 1280x720 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_720p2628kbs
                # 480p
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 1000k -f flv -g 30 -r 30 -s 854x480 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_480p1128kbs
                # 360p
                -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 750k -f flv -g 30 -r 30 -s 640x360 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_360p878kbs;
        }

        application hls {
            live on;
            hls on;
            hls_fragment_naming system;
            hls_fragment 5;
            hls_playlist_length 10;
            hls_path /opt/data/hls;
            hls_nested on;

            # 添加新的分辨率变体
            hls_variant _2160p20000kbs BANDWIDTH=20192000,RESOLUTION=3840x2160;
            hls_variant _1440p12000kbs BANDWIDTH=12192000,RESOLUTION=2560x1440;
            hls_variant _1080p6000kbs BANDWIDTH=6192000,RESOLUTION=1920x1080;
            hls_variant _720p2628kbs BANDWIDTH=2628000,RESOLUTION=1280x720;
            hls_variant _480p1128kbs BANDWIDTH=1128000,RESOLUTION=854x480;
            hls_variant _360p878kbs BANDWIDTH=878000,RESOLUTION=640x360;
        }
    }
}

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 /dev/stdout main;

    root /www/static;
    sendfile off;
    tcp_nopush on;
    server_tokens off;
    
    # 安全设置
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";
    
    # 超时设置
    client_body_timeout 12;
    client_header_timeout 12;
    keepalive_timeout 65;
    
    server {
        listen ${HTTP_PORT};

        location /hls {
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
            root /opt/data;
            add_header Cache-Control no-cache;
            add_header Access-Control-Allow-Origin *;
        }

        location /live {
            alias /opt/data/hls;
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
            add_header Cache-Control no-cache;
            add_header Access-Control-Allow-Origin *;
        }

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

        location /stat.xsl {
            root /www/static;
        }

        location = /healthcheck {
            access_log off;
            add_header Content-Type text/plain;
            return 200 'ok';
            allow 127.0.0.1;
            deny all;
        }

        location /crossdomain.xml {
            default_type text/xml;
            expires 24h;
        }
    }
}