Convert all MP3 files to OGG in all folders and subfolders.

mp3toogg.py

# -*- coding: utf-8 -*-
"""
Convert all MP3 files to OGG in all folders and subfolders starting
at the location of this source file.

@author: Michael Currie

"""
import os, collections
from glob import glob

# For mp3 to ogg conversion
# https://github.com/jiaaro/pydub
from pydub import AudioSegment

def flatten(list_of_lists):
    """
    Recursively travel through a list of lists, flattening them.
    
    """
    # From http://stackoverflow.com/questions/2158395
    for element in list_of_lists:
        # If it's iterable but not a string or bytes, then recurse, otherwise
        # we are at a "leaf" node of our traversal
        if(isinstance(element, collections.Iterable) and 
           not isinstance(element, (str, bytes))):
            for sub_element in flatten(element):
                yield sub_element
        else:
            yield element


cur_dir = os.path.dirname(__file__)
# Create a generator giving all the mp3s
# (From http://stackoverflow.com/questions/18394147/)
mp3_paths = (glob(os.path.join(x[0], '*.mp3')) for x in os.walk(cur_dir))
# Flatten it, since the lists might contain other lists
#mp3_paths_flat = flatten(mp3_paths)
mp3_paths_flat = list(flatten(mp3_paths))

# Convert each mp3 to ogg in place, then delete the mp3
for mp3_path in mp3_paths_flat:
    print("Converting %s " % mp3_path)

    # Prepare the new name for the converted song
    song_folder, song_filename = os.path.split(mp3_path)
    new_song_filename = os.path.splitext(song_filename)[0] + '.ogg'
    ogg_path = os.path.join(song_folder, new_song_filename)

    # Perform the actual import / export
    song = AudioSegment.from_mp3(mp3_path)
    song.export(ogg_path, format='ogg', codec='libvorbis')

    # Delete the original file    
    os.remove(mp3_path)

print("Done converting all %d files." % len(mp3_paths_flat))