checkenv.py returns error after environment install successful about network-analysis-made-simple HOT 2 CLOSED

This happened to me on windows.

There's no command -v available on windows. Powershell has Get-Command.
As a quick fix, I'd suggest the following change to checkenv.py:

if os.name != 'nt':   # check if not windows
    assert not os.system("command -v ffmpeg"), "please install ffmpeg"
else:
    assert not os.system("ffmpeg -version > $null")

A more modern approach to avoid the if-statement might be to update to the subprocess command and check the returncode:

import subprocess
result = subprocess.run("ffmpeg -version", shell=True)
assert result.returncode == 0, "please install ffmpeg"

from network-analysis-made-simple.

From my vague memory this usually happens when ffmpeg isn't added to the Path variable. While installing ffmpeg did you edit the Path variable too?

Thanks!

from network-analysis-made-simple.