#script takes working directory mp4 files (and others) (only tested with mp4) and uses ffmpeg to convert to variable bitrate mp3 files

batchmp4tomp3v0.py

#script takes working directory mp4 files (and others) (only tested with mp4) and uses ffmpeg to convert to variable bitrate mp3 files
workingDirectory = 'C:\\directory_with_the_mp4_files\\'
files = []
import os
for individualFile in os.listdir(workingDirectory):
    totalpath = workingDirectory + individualFile
    if individualFile.endswith(('.mp4', '.wmv', '.avi', '.mkv')):
        files.append(totalpath)
for item in files:
    os.system("ffmpeg -i \"" + item + "\" -q:a 0 -map a \"" + item.rsplit('.', 1)[0] + '\".mp3')