How to install older version of ffmpeg on 24.04.1

[Bo Berglund]

I need to test an application that uses ffmpeg with an older version than what
is installed with apt on Ubuntu 24.04.1.

Reason:

After upgrading my 20.04.6 to 24.04.1 (2-step upgrade) I just found that a
script that uses ffmpeg now runs  about 8 times slower than before...

So I would like to check if something else has changed that causes this and
therefore I want to install the ffmpeg version that is current in Ubuntu
20.04.6.

It does not need to be a global install just something that only works if I set
the path manually to it.

But how do I get it?

All google hits I find talks about getting a *later* version than what is
supported by the distribution. I want an *earlier* version instead, like 4.xxx
And installed locally with the current user.

It should also be possible to easily remove it later on.


-- 
Bo Berglund
Developer in Sweden