Upgrade Already Installed Ffmpeg Software on Ubuntu Server

I have ffmpeg version 2.2.5 installed on my server which is running on ubuntu. I want to update it to latest version and codecs/libraries.

I have tried the following commands but they are not working.

• sudo apt-get update
• sudo apt-get install ffmpeg
• sudo apt-get update ffmpeg 2.8

( I tried doing the same on my local machine, before I do this on the server, which have ffmpeg 2.4.3 installed and after updating around 238 MB and tons of library. When I run ffmpeg -version or ffmpeg -buildconf it show me the same library and ffmpeg version as before. ) Am I missing something? Do I have to compile it or re-configure it?

Following is current console output for ffmpeg 2.2.5 on my server

ffmpeg version 2.2.5 Copyright (c) 2000-2014 the FFmpeg developers
  built on Aug  1 2014 09:24:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libtheora --enable-libx264 --enable-libvpx --enable-libmp3lame
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100

  configuration:
    --enable-gpl
    --enable-version3
    --enable-nonfree
    --enable-postproc
    --enable-libtheora
    --enable-libx264
    --enable-libvpx
    --enable-libmp3lame

I want to upgrade to ffmpeg 2.8 version or atleast 2.4

Please guide me.

Edit:

Giving me this menu while running your mentioned command installation option. Are we pointing to only ffmpeg package?