rtmp {

    server {

        listen ;

        application live {

             allow publish all;

             allow play all;

             live on;

             exec /root/bin/ffmpeg -i rtmp://localhost/live/$name

                        -c:v libx264 -c:a libfdk_aac -b:v 256k -b:a 32k

                        -f flv rtmp://localhost/hls/$name_low

                        -c:v libx264 -c:a libfdk_aac -b:v 768k -b:a 96k

                        -f flv rtmp://localhost/hls/$name_mid

                        -c:v libx264 -c:a libfdk_aac -b:v 1024k -b:a 128k

                        -f flv rtmp://localhost/hls/$name_hi;

        }

        application hls {

            live on;

            hls on;

            hls_path /mnt/hls;

            hls_fragment 15s;

            hls_variant _low BANDWIDTH=;

            hls_variant _mid BANDWIDTH=;

            hls_variant _hi  BANDWIDTH=;

        }

    }

}

hls_continuous on; //打开HLS连续模式。 在这种模式下，HLS序列号从上次停止的地方开始。 老片段被保存。 默认为关闭。