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## CentOS
sudo yum install epel-release
sudo rpm -v --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

sudo yum -y install ffmpeg ffmpeg-devel

## ubuntu
sudo apt install ffmpeg

## 安装 youtube-dl
sudo apt install python3-pip
pip3 install youtube-dl   #安装
pip3 install --upgrade youtube-dl  #升级

## 或者使用 apt 安装
sudo apt-get install youtube-dl