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?

If your Ubuntu version is 14.04 LTS, then you can add this ppa from Doug Mcmahon to upgrade your version of ffmpeg.

sudo add-apt-repository -y ppa:mc3man/trusty-media; sudo apt-get update; sudo apt-get install --only-upgrade ffmpeg

Here's a screenshot to verify:

Remove curent ffmpeg

apt-get remove ffmpeg

Add the repository for ffmpeg4

add-apt-repository -y ppa:savoury1/ffmpeg4

install ffmpeg

apt install -y ffmpeg

print out the version.

ffmpeg -version

Remove the apt repository

add-apt-repository --remove ppa:savoury1/ffmpeg4