ffmpeg path not found TNAS Jellyfin

[eELviathan]

First off, I want to add that I'm completely new to all of this. I just set up my first NAS server and am trying to install and configure the best way to share media with my partner and kids (to their own devices). 

According to everything I've watched and read, if I install Jellyfin, I also must install FFmpeg. I've installed Jellyfin and FFmpeg directly to the base/home (I believe). I can add the exact path to the FFmpeg application (which is right beside the ffprobe), or an enclosing folder path, but nothing works.

What I'm working with:
TNAS TOS v4.2.44
Jellyfin v10.8.9
FFmpeg v4.4.3
(I'm viewing and controlling the TOS through Chrome on a Mac Mini, if that matters at all)

Paths I've tried:
/mnt/md0/application/ffmpeg/sys/bin/
/mnt/md0/application/ffmpeg/
/mnt/md0/application/ffmpeg/sys/bin/ffmpeg
and similar...

Attached are screenshots of the error I see every time I try to save the config, the path showing the ffmpeg and ffprobe, and the TNAS "desktop" showing the Jellyfin and FFmpeg installs sitting right there inside Applications, as one would expect. 

Thank you for any help!

"Please help me... I am in hell."