WebRTC

https://github.com/webrtc/adapter

https://webrtc.github.io/adapter/adapter-latest.js

NS（Noise Suppression 噪声抑制）
VAD（Voice Activity Detection 静音检测）
AECM（Acoustic Echo Canceller for Mobile 声学回声消除）
AGC（Auto Gain Control 自动增益控制）

npm install webrtc-adapter

wget https://webrtc.github.io/adapter/adapter-latest.js -O apps/static/js/adapter-latest.js

https://www.jianshu.com/p/fbf6bea7b610

https://github.com/miguelgrinberg/flask-video-streaming

gunicorn -k eventlet -w 1 -b 0.0.0.0:5000 apps:app

http://127.0.0.1:5000

注意：http://127.0.0.1:5000 这种地址无效