FileNotFoundError в AudioSegment.from_file()

Есть файл lat.m4a, путь:

C:\Users\user\PycharmProjects\curs2024_1\samp

Есть следующий код:

def fileforconv():
    # commands = Path(r"\Users\user\PycharmProjects\curs2024_1\samp\lat.m4a") # Двойной слэш ничего не меняет
    commands = r"C:\Users\user\PycharmProjects\curs2024_1\samp\lat.m4a"
    # zvuk = os.listdir("samp\звук")  при отладке показывает правильную директорию
    son = AudioSegment.from_file(commands, format="m4a") # в этой функции проблема
    file_handle = son.export('samp\\conlut', format='wav')

fileforconv()

Ошибка:

FileNotFoundError: [WinError 2] Не удается найти указанный файл

Если убрать расширение из второй строки функции:

FileNotFoundError: [Errno 2] No such file or directory: 'C:\Users\user\PycharmProjects\curs2024_1\samp\lat'

Полный текст ошибки.

C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg,but may not work   warn ("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)  
Traceback (most recent call last):   
       File "C:\Users\user\PycharmProjects\curs2024_1\main.py", line 58, in <module>
            fileforconv()   
        File "C:\Users\user\PycharmProjects\curs2024_1\main.py", line 22, in fileforconv
            son=AudioSegment.from_file(commands, format="m4a")#   
        File "C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\audio_segment.py", line 651, in from_file
            file, close_file = _fd_or_path_or_tempfile(file, 'rb', tempfile=False)   
File "C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\utils.py", line 60, in _fd_or_path_or_tempfile
                fd = open(fd, mode=mode) 
            FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\user\\PycharmProjects\\curs2024_1\\samp\\lat'

<-без расширения | с расширением->

C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\utils.py:198: RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work
  warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)
Traceback (most recent call last):
  File "C:\Users\user\PycharmProjects\curs2024_1\main.py", line 58, in <module>
    fileforconv()
  File "C:\Users\user\PycharmProjects\curs2024_1\main.py", line 22, in fileforconv
    son=AudioSegment.from_file(commands, format="m4a")#
  File "C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\audio_segment.py", line 728, in from_file
    info = mediainfo_json(orig_file, read_ahead_limit=read_ahead_limit)
  File "C:\Users\user\PycharmProjects\curs2024_1\venv\lib\site-packages\pydub\utils.py", line 274, in mediainfo_json
    res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)
  File "C:\Users\user\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\user\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] Не удается найти указанный файл