ffmpeg 编译 configure 参数

--prefix=/usr
--enable-gpl --enable-shared --enable-libmp3lame --enable-libamr_nb
--enable-libamr_wb --enable-libvorbis --enable-libxvid
--enable-libfaadbin --enable-libfaad --enable-libfaac
--enable-libx264 --enable-pthreads --enable-nonfree