如何在Linux安装gifski：
https://snapcraft.io/install/gifski/debian
Enable snapd
On Debian 9 (Stretch) and newer, snap can be installed directly from the command line:
sudo apt update
sudo apt install snapd
sudo snap install core
Install Gifski
To install Gifski, simply use the following command:
sudo snap install gifski
使用教程，可以参考：
https://ubunlog.com/en/gifski-crear-imagenes-gif/