FFmpeg离线包：浏览 Index of /releases 【下载】
配套组件yasm下载 【yasm-1.3.0.tar.gz】
tar zxvf yasm-1.3.0.tar.gz
cd yasm-1.3.0/ && ./configure --prefix=/usr/local/yasm
make -j8
sudo make installecho "PATH=$PATH:/usr/local/yasm/bin" >> /etc/profile
source /etc/profiletar zxvf ffmpeg-4.3.1.tar.gz
cd ffmpeg-4.3.1 && ./configure --enable-shared --prefix=/usr/local/ffmpeg
make -j8
sudo make installcat >> /etc/profile << EOF
export LD_LIBRARY_PATH=/usr/local/ffmpeg/lib/
PATH=$PATH:/usr/local/yasm/bin:/usr/local/ffmpeg/bin
EOF
source /etc/profile
 和 caches.add()/caches.addAll() 方法他们之间的区别)
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