Simple implementation scheme of transcoding and streaming (I)

Used in recent work ffmpeg, Just take this opportunity to share with you , A simple scheme of transcoding and streaming video stream . If this scheme is not particularly high concurrent playback , It's enough . Of course, if there is a high amount of concurrent playback , The module can also be expanded , Here is the sharing scheme, which is to realize the whole service in modules .

---

Preface

This is a simple series of sharing , Take time to share with you in stages .

---

One 、 Flow chart of the whole service

This is a rough interaction flow chart , The whole service is divided into 3 A module , Let's talk about the function of each module first .
videoAgent： Responsible for interaction with business system , Respond to the transcoding request and streaming request of the business system . Responsible for ffmpeg Verification of transcoding parameters 、 call shell Carry out orders 、 Return new video stream address （ The stream address that the player can play ）
ffmpeg： Install on server , Responsible for transcoding .
nginx： Configure streaming , be responsible for videoAgent Transcoding new address streaming .
The above is the basic scheme , There are several variants of this scheme , Adapt to multiple business environments . Here are some examples ：
Internal network flow and external network push flow ：videoAgent Deployed on the intranet , And ffmpeg And nginx The server can interact with it .videoAgent Increase internal and external network mapping capability .
High load scheme ：videoAgent colony ,ffmpeg、nginx Multi-machine cluster deployment . Add registry ,videoAgent Increase dispatching capacity , Share transcoding push flow pressure .

Two 、 Use steps

1.ffmpeg install

There's nothing to say about this , There is no special configuration . Let's share CSDN The latest installation method shared by bloggers ：
https://blog.csdn.net/qq_43627076/article/details/118584645
Not detailed enough , You can ask yourself again G Adult or Du Niang .

2. verification ffmpeg install

The version information indicates that the installation is complete , Be careful , Need to put ffmpeg Of bin Directory configuration to environment variables path in （centos It's better to be , Otherwise, the command will take a path , Other exceptions may also occur ）

3. verification ffmpeg transcoding

After transcoding flv Playback effect

command ：
ffmpeg -i “I:\ personal \ Huilian infinite \2021\2021103003.mp4” -c:v libx264 -ar 22050 -crf 28 “I:\ personal \ Huilian infinite \2021\ Test transcoding .flv”
See for details of parameters ffmpeg file .

---

summary

I think the realization of this scheme is based on light weight , I haven't had time to share this time videoAgent Specific code , You can do it yourself think Next , Share with me next time . ffmpeg The transcoding ability of is still very powerful , As long as the server gives awesome power. , Do a good job of scheduling , This is still of great commercial value . Share next issue nginx Configuration of 、RTMP Streaming effect .