一、.介绍
摄像头提供视频流=》内网服务器解码=》外网服务器提供访问
- 外网服务器可以使用nginx将指定的请求拦截转发到内网服务器
- 内网服务器使用ffmpeg把摄像头的视频流拉过来进行转码（例如h264转flv）然后推流到nginx中让nginx提供外网服务器调用
二、框架搭建
2.1 支持flv视频流的nginx
下载flv模块
https://github.com/winshining/nginx-http-flv-module
下载nginx源码
http://nginx.org/en/download.html
进入到nginx目录中进行配置编译
./configure --prefix=/usr/local/nginx编译完成存储路径 - -with-http_ssl_module --add-module=/nginx-http-flv-module模块路径
然后进行编译
make
make&install
编译完成后就可以将编译好的nginx拷贝到服务器使用
nginx配置:nginx接收rtmp流1935端口，对外提供访问是9001/live
user rooty;
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 4096;
}
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 9001;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root html;
index index.html index.htm;
}
location /live {
flv_live on; #打开 HTTP 播放 FLV 直播流功能
chunked_transfer_encoding on; #支持 'Transfer-Encoding: chunked' 方式回复
add_header 'Access-Control-Allow-Origin' '*'; #添加额外的 HTTP 头
add_header 'Access-Control-Allow-Credentials' 'true'; #添加额外的 HTTP 头
}
location /control {
rtmp_control all; #rtmp 控制模块的配置
}
#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_auto_push on;
rtmp_auto_push_reconnect 1s;
rtmp_socket_dir /tmp;
rtmp {
out_queue 4096;
out_cork 8;
max_streams 128;
timeout 15s;
drop_idle_publisher 15s;
log_interval 5s; #log 模块在 access.log 中记录日志的间隔时间，对调试非常有用
log_size 1m; #log 模块用来记录日志的缓冲区大小
server {
listen 1935;
application myapp {
live on;
gop_cache on; #打开 GOP 缓存，减少首屏等待时间
}
}
}
推流路径
rtmp://127.0.0.1:1935/nginx配置的app名称/流自定义名称
对外提供的访问路径
http://nginx地址:9001/live?port=1935&app=nginx配置的app名称&stream=流自定义名称
2.2 安装yasm和FFmpeg
注：yasm用于编译ffmpeg
ffmpeg官网下载： ffmpeg.org/download.ht…
安装yasm官网下载：yasm.tortall.net/Download.ht…
2.2.1 安装yasm
解压：
tar -zxvf yasm-1.3.0.tar.gz
检查：
cd yasm-1.3.0
./configure
安装：
make
sudo make install
2.2.1 安装FFmpeg
解压：
tar -xvzf ffmpeg-4.3.2.tar.gz
cd ffmpeg-4.3.2
检查：
./configure --enable-gpl --enable-libx264 --prefix=/opt/ffmpeg
安装：
make #巨慢
sudo make install # 会把ffmpeg相关执行程序、头文件、lib库安装在/opt/ffmpeg/下
配置lib路径：
- 创建环境变量
注：Ld不是id - 配置环境变量
- 更新环境变量
sudo ldconfig
- 验证是否成功
配置软连接类似于快捷方式：
ln -s /opt/ffmpeg/bin/ffmpeg /usr/local/bin/ffmpeg
三、测试
推流转码
ffmpeg -re -i rtmp://58.200.131.2:1935/livetv/hunantv -c copy -f flv rtmp://127.0.0.1:1935/nginxapp名称/流名称
访问路径
http://nginx地址:9001/live?port=1935&app=nginx配置的app名称&stream=流自定义名称