First check if FFmpeg is already installed: which ffmpeg Run Code: yum remove libvpx libogg libvorbis libtheora libx264 x264 ffmpeg if you find an old instance of FFmpeg. Get the dependencies: Code: yum install autoconf automake gcc gcc-c++ git libtool make nasm pkgconfig zlib-devel Make a directory to put all of the source code into: Code: mkdir ~/ffmpeg_sources Turn off the firewall before using git. Yasm is an assembler used by x264 and FFmpeg. Code: cd ~/ffmpeg_sources curl -O http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz tar xzvf yasm-1.2.0.tar.gz cd yasm-1.2.0 ./configure --prefix="/usr/local/src/ffmpeg_build" --bindir="/usr/bin" make make install make distclean export "PATH=$PATH:/usr/bin" H.264 video encoder. Code: cd ~/ffmpeg_sources git clone --depth 1 git://git.videolan.org/x264 cd x264 ./configure --prefix="/usr/local/src/ffmpeg_build" --bindir="/usr/bin" --enable-static make make install make distclean libfdk_aac AAC audio encoder Code: cd ~/ffmpeg_sources git clone --depth 1 git://git.code.sf.net/p/opencore-amr/fdk-aac cd fdk-aac autoreconf -fiv ./configure --prefix="/usr/local/src/ffmpeg_build" --disable-shared make make install make distclean You might get an error about /tmp when running configure. Then you create another temp directory: mkdir /temp export TMPDIR=/temp FFmpeg Code: cd ~/ffmpeg_sources git clone --depth 1 git://source.ffmpeg.org/ffmpeg cd ffmpeg PKG_CONFIG_PATH="/usr/local/src/ffmpeg_build/lib/pkgconfig" export PKG_CONFIG_PATH ./configure --prefix="/usr/local/src/ffmpeg_build" --extra-cflags="-I/usr/local/src/ffmpeg_build/include" --extra-ldflags="-L/usr/local/src/ffmpeg_build/lib" --bindir="/usr/bin" --extra-libs="-ldl" --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libx264 make make install make distclean hash -r . ~/.bash_profile qt-faststart cd ~/ffmpeg_sources/ffmpeg/tools make qt-faststart cp qt-faststart /usr/local/bin ldconfig cd Remember to turn on the firewall again. Check installation: which convert which ffmpeg which qt-faststart add this line to cron (crontab -e) * * * * * cd /home/convert1/public_html/convert && /usr/local/bin/php remote_cron.php > /dev/null 2>&1