Lugick Wang's Blog
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用 ffmpeg 进行 rtmp 推流

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前言

想学习一下视频这一块的技术，了解 iOS 上采集视频到播放的过程。本文先在 Mac 上用 ffmpeg 将本地 mp4 文件 rtmp 推流，本地起 nginx 并使用 VLC 播放，剩下的下次再继续。

步骤

  1. 安装 homebrew

  2. 安装 nginx 和 rtmp 模块 https://github.com/denji/homebrew-nginx

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    brew tap denji/nginx
    brew install nginx-full --with-rtmp-module

  3. 运行 nginx

    网上说前两步执行后直接终端 nginx 就会起一个 server ，浏览器输入 http://localhost:8080 会出现 nginx 的欢迎页面，我这会提示 command not found ，遂修改 $PATH。

    终端 brew info nginx-full 找到 nginx 的安装路径

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    ➜  ~ brew info nginx-full
    denji/nginx/nginx-full: stable 1.12.2, devel 1.13.10, HEAD
    HTTP(S) server, reverse proxy, IMAP/POP3 proxy server
    https://nginx.org/
    Conflicts with:
      nginx (because nginx-full symlink with the name for compatibility with nginx)
    /usr/local/Cellar/nginx-full/1.12.2 (8 files, 1.2MB)
      Built from source on 2018-06-28 at 14:39:46 with: --with-rtmp-module
    From: https://github.com/denji/homebrew-nginx/blob/master/Formula/nginx-full.rb

    ...

    ==> Caveats
    Docroot is: /usr/local/var/www

    The default port has been set in /usr/local/etc/nginx/nginx.conf to 8080 so that
    nginx can run without sudo.

    nginx will load all files in /usr/local/etc/nginx/servers/.

    - Tips -
    Run port 80:
     $ sudo chown root:wheel /usr/local/opt/nginx-full/bin/nginx
     $ sudo chmod u+s /usr/local/opt/nginx-full/bin/nginx
    Reload config:
     $ nginx -s reload
    Reopen Logfile:
     $ nginx -s reopen
    Stop process:
     $ nginx -s stop
    Waiting on exit process
     $ nginx -s quit

    To have launchd start denji/nginx/nginx-full now and restart at login:
      brew services start denji/nginx/nginx-full
    Or, if you don't want/need a background service you can just run:
      nginx

    修改 $PATH

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    vi ~/.bashrc

    文件里 export PATH=$PATH:/usr/local/Cellar/nginx-full/1.12.2/bin

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    source ~/.bashrc

    终端 nginx 后打开 http://localhost:8080 。

  4. 上面找到 nginx.conf 路径为 /usr/local/etc/nginx/nginx.conf 。在 conf 中 http 下面（括号外）添加

    rtmp 配置

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    rtmp {
        server {
            listen 1990;
            application liveApp {
                live on;
                record off;
            }
        }
    }

    重新加载 nginx 的配置文件

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    nginx -s reload

  5. Mac 安装 ffmpeg

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    brew install ffmpeg

  6. 推流

    网上都是 localhost 我这走不通，改成 127.0.0.1 可以。

    在 a.mp4 所在目录下

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    ffmpeg -re -i a.mp4 -vcodec copy -f flv rtmp://127.0.0.1:1990/liveApp

    ​

  7. Mac 上使用 VLC 播放 rtmp 流

    下载 VLC 后 File -> Open Network 填入地址 rtmp://127.0.0.1:1990/liveApp

参考

https://blog.csdn.net/zcvbnh/article/details/79495285

https://www.jianshu.com/p/53059be61546