YTDownloader | YouTube Downloader library made for php using ffmpeg | Video Utils library

I wrote this small Application using pyqt5: from the menubar of the MainWindow I can choose a folder and I would like to pass the path of the choosen folder to the QLineEdit "txtPath" which is in the other class named "YtDownloader". I stuck in this issue since "txtPath" is unknown from the MainWindow.

I am trying to make a YouTube video downloader using Python pytube3 but it doesn't download all the videos. Some videos download very easily but some videos won't download and instead of download it shows error:

I´m currently working on my first electron / react app, which makes use of ffmpeg. I do have a problem to link the .exe file correctly.

The prolem I´m facing is that I ffmpeg.exe is not found when trying to link it with a relative path inside my project directory. When using an absolute path it does work.

The exe files are in the sub-folder of the current directroy.

It does work when I´m using such path:

'C:\\Users\\xxx\\Documents\\development\\ytDownloader\\app\\utils\\ffmpeg\\ffprobe.exe'

But when trying it like this .setFfmpegPath('.\\ffmpeg\\ffmpeg.exe')

or

'./ffmpeg/ffmpeg.exe'

it does not working.

Additionally I would really like to avoid using \\ in my project.

Does someone have an Idea what I´m doing wrong here?

I get this error message: