ffmpeg开启libfdk_aac和libmp3lame
http://ffmpeg.org/trac/ffmpeg/wiki/AACEncodingGuide

http://yasm.tortall.net/Download.html

git clone --depth 1 git://github.com/mstorsjo/fdk-aac.gitcd fdk-aacautoreconf -fiv./configure --disable-shared

http://lame.sourceforge.net/download.php

./configure --enable-sharedmake && make installldconfig /usr/local/lib

./configure --enable-libfdk_aac --enable-nonfree --enable-libmp3lame