下载ffmpeg 代码合x264代码，

ffmpeg 代码：http://ffmpeg.org/

x264代码：http://www.videolan.org/developers/x264.html

cd x264

./configure --enable-static

make

make install

cd ffmpeg

./configure --prefix=/usr/local/ffmpeg --enable-libx264  --enable-gpl --disable-yasm --enable-shared

make

make install

make tools/qt-faststart

cp -ra tools /usr/local/ffmpeg

ln -s /usr/local/ffmpeg/bin/ffmpeg /usr/bin/ffmpeg

ln -s /usr/local/ffmpeg/tools/qt-faststart /usr/bin/qt-faststart