obs是一个非常好用的录屏软件，我们在windows安装和使用是非常的简单，但是在ubuntu安装还是比较麻烦的，需要使用命令行，还需要很多的依赖。
修改源
deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner
安装依赖
sudo apt install v4l2loopback-dkms
安装OBS
sudo add-apt-repository ppa:obsproject/obs-studio
sudo apt update
sudo apt install ffmpeg obs-studio
初始化配置
见：https://blog.csdn.net/qq_45642410/article/details/120889267
设置语言
设置保存路径
OBS框选区域进行录制
https://zhuanlan.zhihu.com/p/564097463
参考：
1、OBS官方安装教程
2、ubuntu 20.04 安装录屏软件 OBS 及卸载
2、【Ubuntu】虚拟摄像头，并应用在Teams上
3、Ubuntu20.04 LTS 用simpleScreenRecorder 录制屏幕，解决包找不到原因，ubuntu 20.04 LTS国际源source.list文件
4、