Can find subprocess.py when using Pyinstaller

[Verzijl]

When I try to create an executable with Pyinstaller and a very simple ffmpeg-python script, it will create the executable but when I try to run it I get this error. If I run the python code itself it runs without a problem.

File "site-packages\ffmpeg\_run.py", line 325, in run
 File "site-packages\ffmpeg\_run.py", line 290, in run_async
 File "subprocess.py", line 800, in __init__
 File "subprocess.py", line 1207, in _execute_child
FileNotFoundError: [WinError 2] The system cannot find the file specified

I tried the things in the other Pyinstaller issue.
All the things I tried:
pyinstaller/pyinstaller#3795
https://github.com/pyinstaller/pyinstaller/wiki/Recipe-subprocess
https://stackoverflow.com/questions/51516128/pyinstaller-with-subprocess-popen-fails-as-exe

This is only on windwos, on mac it works fine.

[TheMrRandomDude]

Bumping it. Ran into same issue today.

Created an executable using pyinstaller --hidden-import "ffmpeg-python" --onefile myscript.py>

Throws same error,

[wugoukanle]

you can try to rewrite shell=False to shell=True in subprocess Popen init()