Ffmpeg-python: Can't find file with ffmpeg.input()

[tossorrow]

import ffmpeg
import os

file1 = 'input.avi'
file2 = 'output.avi'
print(os.path.isfile(file1))   #True

stream = ffmpeg.input(file1)
stream = ffmpeg.hflip(stream)
stream = ffmpeg.output(stream, file2)
print(stream.get_args())
ffmpeg.run(stream)   #FileNotFoundError: [WinError 2] The system could not find the specified file.

Here is the print:

['-i', 'input.avi', '-filter_complex', '[0]hflip[s0]', '-map', '[s0]', 'output.avi']
---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)

[kkroening]

Make sure ffmpeg is installed and on your system path. Note that ffmpeg-python does _not_ try to automatically install ffmpeg. It's simply a python _wrapper_ for ffmpeg, and it's up to you to make sure it's installed in whatever way makes sense for how you're using it.

[kkroening]

We should keep this in mind though, that users may see unexpected error messages if ffmpeg can't be found. It should probably either be in the docs, or print a more helpful error message. Thanks for reporting.

Please let me know if this fixes your issue.

[tossorrow]

Problem solved. Thank you for your help!
An error message like 'ffmpeg is not installed' cound be very helpful for beginners.

[gugarosa]

I agree! For a minute, I thought that this package would make ffmpeg avaliable behind the scenes. Not a problem to install it though, just pointing that a more informative message would be better.

[kkroening]

Thanks for the suggestion. I'll try to add a more helpful error message if I can find time. PRs are welcome as well.

[UweR70]

Is this still the case:
Note that ffmpeg-python does not try to automatically install ffmpeg.

I installed ffmpeg-python first
run in the error
installed than ffmpeg
run my python code and got the error that ffmpeg does not have a ".input(...)" function.

I was forced to uninstall both and re-install ffmpeg-python.

But have now the same issue. "File not found"
But the file exists under the given path.

EDIT:

I uninstalled both.
Installed first ffmpeg than ffmpeg-python.
run the code from @tossorrow
and got the same error.

In Visual Studio Code: conda / Python 3.8.5 / plus the following packages:

scikit-learn
seaborn
scipy
scikit-image
numpy==1.18.*
matplotlib
pandas
openpyxl
keract
opencv-python
pygame
gym
pyqt5

pylint
flake8
mypy
isort
black
autopep8
pre-commit

Yes, I am in the correct conda envrioment.

EDIT -2

I am really angry. Why?
I took my one and a half day to figure out why I get the "File not found" error.
A simple, short explanatory text in your "ReadMe.md" would have saved me that.
And certainly not just me.
As an aside, this would make this repository a lot more professional.

So please add something like these to your "Readme.md":

Note that ffmepg-Python wrapes the orignal ffmpeg.
Please make sure that the original ffmpeg is installed and
(in Windows) the system %Path% variable is set to the "...\ffmepg\bin" directory.

Then you can install ffmepg-Python via
pip install ffmepg-python