Adding custom DLL to PyQGIS script

Question

I am trying to implement a VLC player control into a PyQGIS script.

There is python-vlc package that should be run with VLC Player installed. I have installed this package through OSGeo4W.bat but when I try import vlc Python says that:

specific DLL cannot be found

It's a libvlc.dll lib which is mandatory for making the VLC run in Python.

Full error code:

Traceback (most recent call last):
  File "C:\OSGEO4~1\apps\Python37\lib\code.py", line 90, in runcode
    exec(code, self.locals)
  File "<input>", line 1, in <module>
  File "C:/OSGEO4~1/apps/qgis/./python\qgis\utils.py", line 798, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:\OSGEO4~1\apps\Python37\lib\site-packages\vlc.py", line 220, in <module>
    dll, plugin_path  = find_lib()
  File "C:\OSGEO4~1\apps\Python37\lib\site-packages\vlc.py", line 176, in find_lib
    dll = ctypes.CDLL('.\\' + libname)
  File "C:\OSGEO4~1\apps\Python37\lib\ctypes\__init__.py", line 356, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found

I looked through GIS SE, there were also cases when custom DLLs couldn't be imported through ctypes.CDLL(dll_path) nor with os.add_dll_directory(path).

Here is a similar case: Using ctypes for QGIS Python plugin to bind DLL. Unfortunately, there wasn't a solution.

Moreover, add_dll_directory() method is missing in the os module in QGIS. Has anyone also tried to add custom DLLs to PyQGIS script/plugin? What workaround can be found here?