# 安装 ffmpeg(从git下载太慢了,建议其他地方下载然后在上传)(过程挺大)
rm -rf /usr/local/ffmpeg
mkdir /usr/local/ffmpeg
cd /usr/local/ffmpeg
#git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
wget http://ffmpeg.org/releases/ffmpeg-4.3.1.tar.gz
tar xvf ffmpeg-4.3.1.tar.gz
cd ffmpeg-4.3.1
./configure --enable-shared --prefix=/usr/local/ffmpeg --disable-yasm
make
make install
## 添加动态库路径
touch  /etc/ld.so.conf.d/fmpeg.conf
echo '/usr/local/ffmpeg/lib' >> /etc/ld.so.conf.d/fmpeg.conf
ldconfig -v
## 软连接
rm -rf /usr/bin/ffmpeg
ln -s /usr/local/ffmpeg/bin/ffmpeg /usr/bin/ffmpeg
rm -rf /usr/bin/ffprobe
ln -s /usr/local/ffmpeg/bin/ffprobe /usr/bin/ffprobe
## 头文件
cd /usr/local/ffmpeg/include/
mkdir ffmpeg
cp -r libswscale/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libswresample/ /usr/local/ffmpeg/include/ffmpeg/
# cp -r libpostproc/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libavutil/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libavformat/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libavfilter/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libavcodec/ /usr/local/ffmpeg/include/ffmpeg/
cp -r libavdevice/ /usr/local/ffmpeg/include/ffmpeg/
cp -r ffmpeg/ /usr/include/
## ffmpeg 安装程序会在 /usr/local/ffmpeg/lib/pkgconfig 目录下提供 libavcodec.pc libswscale.pc 等5个.pc文件，分别对应安装的五个库文件。必须要让 pkg-config 能找到 ffmpeg 的 *.pc 文件，通过 PKG_CONFIG_PATH 来设置 pkg-config 来更新。
echo 'export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig:/usr/local/ffmpeg/lib/pkgconfig' >> /etc/profile
echo 'export FFMPEG_HOME=/usr/local/ffmpeg' >> /etc/profile
echo 'export PATH=$PATH:$FFMPEG_HOME' >> /etc/profile
source /etc/profile