Media Encoder Jail in FreeNAS (ffmpeg, handbrake, filebot)

Create the jail

Install the encoding options you'd like to use inside the jail. 'jls' to see the list of jails and to enter the jail: 'jexec #'.

I installed the following 

pkg install python
pkg install ffmpeg
pkg install handbrake
Filebot: Extracted the portable package into a folder in the jail -- Screenshot
pkg install libass
portsnap fetch
cd /usr/ports/audio/lame
make install clean (just keep hitting enter till it's finished)

Make sure the jail can access your encoding / media folder(s)

I used this python script and commented out import ntfsutils.junction (Line 63)

and then changed these lines:

FFMPEG = '/usr/local/bin/ffmpeg' #'/usr/bin/FFMPEG'

HANDBRAKE = "/usr/local/bin/HandBrakeCLI" #'/usr/bin/HandBrakeCLI"

FILEBOT = '/filebot/'

Run the Python Script in the jail:

root@encoder_jail: nohup python scripts/

Thanks to @KameeCoding & for helping me getting it working.