yum install automake autoconf make gcc gcc-c++ libtool zlib zlib-devel curl curl-devel alsa-lib alsa-lib-devel gettext gettext-devel expat expat-devel nasm pkgconfig

wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
tar -zxvf yasm-1.3.0.tar.gz
cd yasm-1.3.0
./configure
make -j8
make install

yum install gnutls gnutls-devel

yum install lame lame-devel

#卸载系统自带的旧版x264
yum remove x264 x264-devel

#安装 x264
wget -c ftp://ftp.videolan.org/pub/x264/snapshots/x264-snapshot-20120718-2245-stable.tar.bz2
# 未安装 bzip2 则执行安装命令
yum install bzip2
tar jxvf x264-snapshot-20120718-2245-stable.tar.bz2
cd x264-snapshot-20120718-2245-stable
./configure --enable-shared  --enable-static
make -j8
make install

wget http://www.ffmpeg.org/releases/ffmpeg-3.1.tar.gz
tar -zxvf ffmpeg-3.1.tar.gz
cd ffmpeg-3.1
./configure --prefix=/usr/local/ --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-zlib --enable-bzlib --enable-libmp3lame --enable-libx264 --enable-pic
make -j8
make install

ffmpeg -version