flac-to-mp3

#!/usr/bin/python3

import sys
import subprocess
import os
from shlex import quote

# Assume current directory if none given
walkroot = '.' if len(sys.argv) < 2 else sys.argv[1]

for root, subfolders, files in os.walk(walkroot):
	for file in files:
		# Input file path
		inpath = os.path.join(root, file)
		
		# Output file path
		splitpath = inpath.split(os.sep)   # List of directories
		splitpath.insert(1, "MP3")   # Put everything in walkroot/MP3/
		# Change extension to .mp3
		name, extension = os.path.splitext(splitpath[-1])
		splitpath[-1] = name + ".mp3"
		outPath = os.path.join(*splitpath)

		if file.endswith(".flac"):
			try:
				os.makedirs(os.path.split(outPath)[0])
			except FileExistsError:   # If the directory already exists, ignore error
				pass
			print("Converting", file)
			cmdString = "ffmpeg -i {} -ab 320k -map_metadata 0 -id3v2_version 3 {}".format(quote(inpath), quote(outPath))
			p = subprocess.Popen(["powershell.exe", cmdString], stdout=sys.stdout)
			p.communicate()
			print("Done")