Why can't the CMD file find the program (EncFSMP, path problem)?

Question

Windows

There are 2 files in the
folder ffmpeg.exe
video_info.cmd

Text video_info.cmd
ffmpeg -i original_video.mp4

Usually, when you start video_info.cmd everything works.
Everything works on a regular local disk. Works on some encrypted (mountable) drives as well.
But does not work on EncFSMP.

I placed these files on a disk mounted by EncFSMP. Now, when I run video_info.cmd, I see a message that wasn't there before:
"Unable to verify publisher. Are you sure you want to run this program?" and below
"This file does not have a valid digital signature." Well, okay, I run it and see the message in the console:
"ffmpeg is not an internal or external command, executable program or batch file."

I change to ffmpeg.exe
ffmpeg.exe -i original_video.mp4
and everything works.

Why doesn't standard ffmpeg work in CMD?

What are the problems with the paths? How to fix it?

Answer 1

Write the full path to the file or by going to the directory with the executable file run it from the current location:
# cd D:\DIRECTORY\
# .\ffmpeg -i original_video.mp4