A small script to extract the audio from the videos in a particular directory

vid_to_aud.py

#!/usr/bin/env python3
import sys
import string
import os

def message():
    print ('Command: python3 vid_to_audio.py <Absolute path of directory>')

def split_file(filename):
    l = filename.split('.')
    return ".".join(l[:-1]),l[-1]

def convert(filelist):
    s = ' ()'
    try:
        for ffile in filelist:
            print(ffile)
            file = ffile
            for character in s:
                file = file.replace(character, '\\' + character)

            filename,extension = split_file(file)
            video_to_wav = 'ffmpeg -i ' + file + ' ' + filename + '.wav'
            audio = 'lame ' + filename + '.wav' + ' ' + filename + '.mp3'

            if os.path.exists(split_file(ffile)[0] + '.mp3'):
                print('File already downloaded!\n\n')
                continue
            os.system(video_to_wav)
            os.system(audio)
            os.remove(split_file(ffile)[0] + '.wav')

            print('*'*50 + '\n\n')
            print('Successfully converted ' + ffile.split('.')[0].split('/')[-1] + ' to .mp3\n\n')
            print('*'*50 + '\n\n\n\n')

    except OSError as err:
        print(err.reason)
        exit(1)

def main():
    if len(sys.argv) < 1 or len(sys.argv) > 2:
        message()
        exit(1)
    directory = sys.argv[1]
    try:
        if os.path.exists(directory):
            print("Starting the operation....")
    except OSError as er:
        print(er.reason)
        exit(1)

    fileList = []
    for root, subFolders, files in os.walk(directory):
        for file in files:
            fileList.append(os.path.join(root,file))

    convert(fileList)

if __name__ == '__main__':
    main()