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Re: Missing Shared Object File for ffmpeg




On Tue 20 Mar 2018 at 13:47:42 (-0400), Dan Norton wrote:
> On Tue, 20 Mar 2018 12:59:21 -0400
> Greg Wooledge <wooledg@xxxxxxxxxxx> wrote:
> 
> > On Tue, Mar 20, 2018 at 12:18:05PM -0400, Dan Norton wrote:
> > > >  * The output of "apt policy ffmpeg".  
> > > 
> > > ffmpeg:
> > >   Installed: 7:3.2.10-1~deb9u1
> > >   Candidate: 7:3.2.10-1~deb9u1
> > >   Version table:
> > >  *** 7:3.2.10-1~deb9u1 500
> > >         500 http://debian.gtisc.gatech.edu/debian stretch/main amd64
> > >         Packages 
> > >         500 http://security.debian.org/debian-security
> > >         stretch/updates/main amd64 Packages 
> > >         100 /var/lib/dpkg/status
> > >   
> > > >  * The output of "aptitude why libopenal1".  
> > > 
> > > i   ffmpeg        Depends libavdevice57 (>= 7:3.2.10)
> > > i A libavdevice57 Depends libopenal1 (>= 1.14)         
> > 
> > >From these, it looks like you have the stretch version of ffmpeg,
> > >and  
> > a libopenal1 dependency that can be satisfied by the stretch version
> > of libopenal1.
> > 
> > If libopenal1 is not actually installed, then something is very wrong.
> > Is it possible that you have the package "installed", but something
> > else removed the library file?  In that case, just reinstall the
> > package:
> > 
> > apt-get --reinstall install libopenal1
> > 
> 
> That did it - thanks, Greg! 
> 
> But what does this do that apt purge/install of ffmpeg does not?

You posted:

# apt purge ffmpeg
# apt autoremove
# apt install ffmpeg

but you didn't show your working. You should check out what happened
by looking at /var/log/apt/history.log to see if libopenal1 was
affected by this command sequence. For a start, other packages might
depend on libopenal1, preventing its auto-removal.

Then of course there's the investigation of why it wasn't
installed correctly in the first place, and what was happening
during the "several attempts" at installing ffmpeg.

Cheers,
David.