How to install ffmpeg in a jail.

[Hermit]

Hi, I'm trying to install ffmpeg inside of a jail on my truenas server. I've installed it via a command pgk install ffmpeg but when I've tried to run it the ffmpeg returned an error Shared object "libavdevice.so.58" not found, required by ffmpeg. After some time spend googling the error message I've learned that I have to include that library manually because the path to it is incorrect but I've not been able to find out how to do that on a TrueNas os. Does anyone have a suggestion as to how to get it up and running?

My TrueNas version is TrueNAS-12.0-U5.

 

[Samuel Tai]

Inside the jail, in your .profile, set the environment variable LD_LIBRARY_PATH to include the path to where libavdevice.so.58 lives.

 

[Hermit]

I have added the line LD_LIBRARY_PATH=/usr/local/lib at the end of the .profile file but it did not solve the problem.

 

[Samuel Tai]

Try

Code:

export LD_LIBRARY_PATH="/usr/local/lib"

and then exiting the jail shell and coming back into the jail shell. Run env to make sure the environment variable is active.

 

[Hermit]

The new environment variable doesn't show up in the env. I've tried to restart the jail too, no effect.

 

[Samuel Tai]

What shell are you running as root in the jail? If it's csh, then add

Code:

setenv LD_LIBRARY_PATH /usr/local/lib

to .cshrc.

 

[Hermit]

That did it. Thank you for your help.