Convert all media files from a folder to audio

convert_to_audio.py

import subprocess
import os

#%%
current_directory: str = os.getcwd()

working_directory = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))

#%%
def convert_to_audio(filename, file_extension):
    ffmpeg_text = ['ffmpeg', '-n']
    ffmpeg_text.append('-i')
    ffmpeg_text.append(filename + file_extension)
    ffmpeg_text.append('-c:a')
    ffmpeg_text.append('pcm_s16le')
    ffmpeg_text.append('-ar')
    ffmpeg_text.append('48000')
    ffmpeg_text.append('audio/' + filename + '.wav')
    result = subprocess.run(ffmpeg_text,
                            stdout=subprocess.PIPE,
                            cwd=working_directory)
    print(result.stdout)

#%%
f = []
for (dirpath, dirnames, filenames) in os.walk(working_directory):
    f.extend(filenames)
    break

# print(dirpath)
# print(dirnames)
# print(filenames)

#%
for filename in filenames:
    filename, file_extension = os.path.splitext(filename)
    # print(filename)
    # print(file_extension)
    if file_extension.lower() in ['.mp4', '.mov', '.wav', '.m4a']:
        convert_to_audio(filename, file_extension)