网上很多编译nginx+nginx-rtmp-module的方法，但是很少有可用的openresy+nginx-rtmp-module的编译方法。本文就从模块编译开始先容下如何搭建点播、直播做事器。
首先下载openresty源码：https://github.com/openresty/openresty；如果仅仅编译nginx-rtmp-module，可以下载https://github.com/arut/nginx-rtmp-module，如果想额外支持http-flv协议，可以下载https://github.com/winshining/nginx-http-flv-module.git，后者包含了前者。
接着我们编译openresty
cd openresty/openresty-1.25.3.1 ./configure --add-module=../../nginx-http-flv-module
然后
makesudo make install
就完成了编译，不过实践过程中碰着了下面几个问题，值得分享下：
openresty/openresty-1.25.3.1/../../nginx-http-flv-module/hls/ngx_rtmp_hls_module.c:2059:27: error: use of undeclared identifier 'NGX_RTMP_FRAME_IDR' frame.key = (ftype == NGX_RTMP_FRAME_IDR); ^10 errors generated.make[2]: [objs/addon/hls/ngx_rtmp_hls_module.o] Error 1make[1]: [build] Error 2make: [all] Error 2
涌现问题的缘故原由是我们config缺点了，nginx-http-flv-module 模块中包含nginx-rtmp-module模块的功能，只需安装nginx-http-flv-module 模块即可。也便是说，下面的配置方法是缺点的。
./configure --add-module=../../nginx-rtmp-module --add-module=../../nginx-http-flv-module
然后是make过程中的warning
ld: warning: dylib (/usr/local/Cellar/gcc/11.2.0/lib/gcc/11/libstdc++.dylib) was built for newer macOS version (11.3) than being linked (11.1)
设置下环境变量即可
export MACOSX_DEPLOYMENT_TARGET=11.3
然后是make install的时候碰着的
cp: /openresty/openresty-1.25.3.1/build/resty.index: No such file or directorymake: [install] Error 1
build/pod: No such file or directorymake: [install] Error 1
上述两个问题，在网上没有找到好的办理办法，目测这俩文件对安装没有大的影响，我的办理办法是在make install之前先创建它俩。
touch build/resty.indextouch build/pod
然后问题就办理了。精确安装后展示如下：
mkdir -p /usr/local/openresty/site/lualib /usr/local/openresty/site/pod /usr/local/openresty/site/manifestln -sf /usr/local/openresty/nginx/sbin/nginx /usr/local/openresty/bin/openresty
然后我们运行下
/usr/local/openresty/bin/openresty
ps aux |grep openrestyxiazemin 28175 0.0 0.0 4268424 732 s016 S+ 4:27下午 0:00.00 grep openrestyroot 25010 0.0 0.0 4306592 584 ?? Ss 4:27下午 0:00.00 nginx: master process /usr/local/openresty/bin/openresty
没有报错，解释编译成功。
接着我们安装ffmpeg来进行推流，直接brew install ffmpeg会慢到让你疑惑人生。果断放弃，直接采取docker 镜像安装。
docker pull jrottenberg/ffmpegUsing default tag: latestlatest: Pulling from jrottenberg/ffmpegdocker.io/jrottenberg/ffmpeg:latest
接着到网高下一个mp4格式的素材到本地。至此，我们的准备事情准备完毕。
然后开始配置我们的rtmp做事器，配置文件如下：
#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 1985; #not default port 1935 application myapp { live on; #为 rtmp 引擎设置最大连接数。默认为 off max_connections 1024; # 不开启录制 record off; } application hls{ live on; hls on; hls_path ./hls; hls_fragment 1s; } }}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; 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; #} location /live { flv_live on; } location /hls { #server hls fragments types{ application/vnd.apple.mpegurl m3u8; video/mp2t ts; } alias ./hls; expires -1; #跨域一定要放开 add_header Access-Control-Allow-Origin ; add_header Access-Control-Allow-Headers X-Requested-With; add_header Access-Control-Allow-Methods GET,POST,OPTIONS; } # rtmp stat location /stat { rtmp_stat all; #rtmp_stat_format json; rtmp_stat_stylesheet stat.xsl; } location /stat.xsl { root ./html/rtmp; } # rtmp control location /control { rtmp_control all; add_header Access-Control-Allow-Origin ; } } # 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的配置和http的配置类似，包括rtmp、server、application三层。配置完毕后我们启动openresty
ps aux |grep -E "openresty|nginx" |grep -v grep |awk '{print $2}' |xargs sudo kill -9 && /usr/local/openresty/bin/openresty -p $PWD/ -c conf/nginx.conf
接着我们启动ffmpeg进行推流
docker run -v $(pwd):$(pwd) jrottenberg/ffmpeg:latest -re -i $(pwd)/demo.mp4 -vcodec copy -f flv rtmp://host.docker.internal:1985/hls/stream
推流成功后展示如下：
[flv @ 0xae7e00] Failed to update header with correct filesize.frame= 929 fps= 30 q=-1.0 Lsize= 7624kB time=00:00:30.93 bitrate=2018.7kbits/s speed= 1xvideo:7101kB audio:484kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.511305%
推流过程中如果碰着下面缺点
Metadata: handler_name : Core Media Audiortmp://host.docker.internal:1985/zbcs/room: Input/output error
缘故原由是推流路径不对，application hls 前缀匹配后，还须要加一层目录，对应着我们的推流密钥。也便是说下面的推流是不对的：
docker run -v $(pwd):$(pwd) jrottenberg/ffmpeg:latest -re -i $(pwd)/demo.mp4 -vcodec copy -f flv rtmp://host.docker.internal:1985/hls
推流成功后我们可以下载工具vlc来进行拉流，在vlc输入
rtmp://localhost:1985/hls/stream
就可以看到视频播放效果，为了防止推流早早结束了，影响我们测试，可以配置循环推流：
docker run -v $(pwd):$(pwd) jrottenberg/ffmpeg:latest -stream_loop -1 -re -i $(pwd)/demo.mp4 -vcodec copy -f flv rtmp://host.docker.internal:1985/hls/stream
回过分来看下我们的hls目录，可以看到下面的文件列表：
% ls ./hls stream-20.ts stream-23.ts stream-26.ts stream-29.tsstream-18.ts stream-21.ts stream-24.ts stream-27.ts stream.m3u8stream-19.ts stream-22.ts stream-25.ts stream-28.ts
一个stream.m3u8 和一批ts文件。转流成功后在我们之前配置的nginx rtmp模块的吸收路径下（/hls）会天生m3u8索引文件，m3u8实在便是ts文件的索引，ffmpeg会把一个直播源的数据分割成很多个ts文件，访问m3u8可以获取ts文件的播放顺序，逐个播放，ts文件达到一定数量会自动删除前面无用的ts，并且如果ffmpeg停滞转流，文件夹底下的文件也会自动打消。
至此我们完成了点播的推流和播放器拉流。如何进行直播的推流呢？实在很大略，我们把ffmpeg换成推流工具obs即可，和我们日常直播推流一样。obs设置推流做事器地址为
rtmp://localhost:1985/hls/stream
须要把稳的是，做事器地址是
rtmp://127.0.0.1:1985/hls/
密钥是
stream
否则会涌现推流失落败。至此，大略的点播和直播做事器搭建流程先容完毕。后面详细先容如何实现网页版的播放端推流、看端拉流、以及播放掌握，敬请期待。
