1.安装
添加ppa源
sudo add-apt-repository ppa:djcj/hybrid 更新刚才添加的源
sudo apt-get update 下载ffmpeg
sudo apt-get install ffmpeg 遇到询问安装直接按enter或者输入y按enter
2.安装可能的bug
Unable to fetch some archives, maybe run apt-get update or try with –fix-missing?
直接
sudo vi /etc/apt/sources.list清空里面所有内容，添加如下内容
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse