下载地址https://ffmpeg.org/download.html#build-linux
wget https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz
xz -d ffmpeg-release-amd64-static.tar.xz
tar -xvf ffmpeg-release-amd64-static.tar
./ffmpeg
cd /usr/bin
ln -s /home/ffmpeg-4.2.2-amd64-static/ffmpeg ffmpeg
ln -s /home/ffmpeg-4.2.2-amd64-static/ffprobe ffprobe