先安装yasm:

解压yasm-1.3.0.tar.gz

cd yasm-1.3.0/
./configure
make && make install
安装x264

解压last_x264.tar.bz2

cd x264-snapshot-20180305-2245/
./configure
make && make install
安装libfdk-aac:
解压fdk-aac-0.1.6.tar.gz

cd fdk-aac-0.1.6/
./configure
make && make install
安装cmake
yum install cmake*
cmake –version 如果大于3.5则不需安装cmake-3.5
安装ffmpeg

解压ffmpeg-3.4.2.tar.gz

cd ffmpeg-3.4.2/
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/
./configure –disable-debug –enable-libx264 –enable-gpl –enable-shared –enable-libfdk-aac –enable-nonfree
查看输出信息
Enabled encoders:是否有 libfdk_aac libx264
有
make && make install
cp /usr/local/lib/libx* /lib64/
cp /usr/local/lib/libfdk* /lib64/
cp /usr/local/lib/libav* /lib64/
cp /usr/local/lib/libsw* /lib64/
cp /usr/local/lib/libpostproc* /lib64/

参考地址：https://blog.csdn.net/yinsui1839/article/details/80096668

https://blog.csdn.net/weixin_46045077/article/details/106659194

libx264 not found解决办法：

添加 –extra-cflags=-I/usr/local/include –extra-ldflags=-L/usr/local/lib

执行：./configure –enable-memalign-hack –enable-ffserver –enable-network –enable-protocols –enable-muxers –disable-yasm –enable-shared –enable-w32threads –enable-libx264 –enable-gpl –extra-cflags=-I/usr/local/include –extra-ldflags=-L/usr/local/lib

参考地址：http://blog.sina.com.cn/s/blog_54b5ea250100r53o.html

fdk-aac安装地址：

http://www.linuxfromscratch.org/blfs/view/svn/multimedia/fdk-aac.html

解决libx264.so库文件不存在错误：error while loading shared libraries: libXXX.so.X: cannot open shared object file: No such file

vim /etc/ld.so.conf     //在新的一行中加入库文件所在目录
/usr/lib  
 
# ldconfig                 //更新/etc/ld.so.cache文件

参考链接：https://blog.csdn.net/deeplan_1994/article/details/83927832