This might help but first see important notes at
https://launchpad.net/~mc3man/+archive/ubuntu/trusty-media
It looks like using this repo may cause other issues, but depending on what else you have installed or might wish to install in future, it may be suitable for you.
By the approach at
https://www.faqforge.com/linux/how-to-install-ffmpeg-on-ubuntu-14-04/
you can use apt-get to install and remove if/when desired, instead of using dpkg, if that's more familiar.
The Universe repo should be listed as a tick box in the first (Ubuntu Software) tab of Software & Updates, in system settings. There is a description for each repo before the name in brackets at the end.
Hope that helps.
On Thu, 13 Jul 2017, at 18:33, Daniel Llewellyn via Hampshire wrote:
>
>
> On 13 July 2017 at 17:51, Peter Alefounder via Hampshire <hampshire@???> wrote:>> The installation was done by Dell. My web searches have revealed that>> I am not the only one with this problem. It appears that ffmpeg was>> left out of Ubuntu 14.04 for reasons unknown.
>
> I wasn't aware of it not being available in 14.04.
>
>> > Installing ffmpeg from source won't satisfy apt dependencies,
>>
>> Whyever not? That appears to be an entirely unreasonable restriction.>
> APT cannot know how or where you install something that isn't in a deb package.>
>> > so you either need to get the universe repo enabled and install
>> > ffmpeg through apt
>>
>> How do I enable the universe repo?>
> If ffmpeg isn't in the 14.04 release then enabling the universe repo won't help>
>> > or you need to compile silentcast yourself.
>>
>> I don't think the source code is available, but will investigate.>>
>> I obtained a deb file for ffmpeg, moved it to /var/cache/apt/archives/>> and tried to install from there (a procedure that has worked for
>> something else), but got this:
>>
>> pra@pra-Inspiron-15-3552:~/software$ sudo apt-get install ffmpeg
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> 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
>
> The way you install deb packages from file rather than a repository is to use dpkg directly:>
> dpkg -i /path/to/downloaded-ffmpeg-debfile.deb
>
> However if the package is from a more recent release of Ubuntu then it will likely depend on package versions that are only in that later release, so you'll be descending into the dependency hell that APT was designed to prevent.>
> --
> Daniel Llewellyn
> --
> Please post to: Hampshire@???
> Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire
> LUG URL: http://www.hantslug.org.uk
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