How to install ffmpeg on Ubuntu?

Question

fmpeg

[email protected]:~$ sudo apt-get install ffmpeg
[sudo] password for krll: 
Чтение списков пакетов… Готово
Построение дерева зависимостей       
Чтение информации о состоянии… Готово
Package ffmpeg is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Answer 1

sudo apt-add-repository ppa:jon-severinsson/ffmpeg 
sudo apt-get update
sudo apt-get install ffmpeg

Answer 2

gooogle ffmpeg install ubuntu

Answer 3

avconv is much more buggy. I don't know what they're smoking in libav, but it works way worse than the original ffmpeg.
The jon-severinsson PPA contained a very old ffmpeg and no longer exists. I'm using my PPA after the samrog131 PPA died (100% continuity preserved):

sudo add-apt-repository ppa:adrozdoff/ffmpeg-opti
sudo apt-get update
sudo apt-get install ffmpeg-real

To make ffmpeg available by default on the system, install the package:
sudo apt-get install ffmpeg-set-alternatives