Install latest FFmpeg and x264

FFmpeg is a versatile tool to encode and decode a multitude of video and audio formats. x264encodes high-quality H.264 video

1. Uninstall x264, libx264-dev, and ffmpeg if they are already installed. Open a terminal and run the following

     $ sudo apt-get remove ffmpeg x264 libx264-dev

2. Get all of the packages you will need to install FFmpeg and x264

 $ sudo apt-get update
 $ sudo apt-get install build-essential git-core checkinstall yasm texi2html \
    libfaac-dev libjack-jackd2-dev libmp3lame-dev libopencore-amrnb-dev \
    libopencore-amrwb-dev libsdl1.2-dev libtheora-dev libva-dev libvdpau-dev \
    libvorbis-dev libvpx-dev libx11-dev libxfixes-dev libxvidcore-dev zlib1g-dev

Install x264
3. Get the current source files, compile, and install x264.

  cd 

  git clone git://git.videolan.org/x264
  cd x264
  ./configure
  make

  [optional]  

  sudo checkinstall --pkgname=x264 --pkgversion="3:$(./version.sh | \
    awk -F'[" ]' '/POINT/{print $4"+git"$5}')" --backup=no --deldoc=yes \
    --fstrans=no --default

  make install [To install]

Install FFmpeg
4. Get the most current source files, compile, and install FFmpeg.

cd
git clone git://git.videolan.org/ffmpeg
cd ffmpeg
./configure --enable-gpl --enable-version3 --enable-nonfree --enable-postproc \
    --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb \
    --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis \
    --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
make

make install

sudo checkinstall --pkgname=ffmpeg --pkgversion="5:$(./version.sh)" --backup=no \
    --deldoc=yes --fstrans=no --default
hash x264 ffmpeg ffplay ffprobe

5. To check ffmpeg

   $ ffmpeg and press enter