FLAC to mp4 converter for SPOTREC downloads

flac2mp4.py

# parameters not working yet, added removal of number prefixes

import os, re
from mutagen import File
from mutagen.mp4 import MP4, MP4Cover
from subprocess import call

input_folder = "flac_to_convert"
output_folder = "mp4"
quality = "320"
output_format = "m4a"
cover_art_type = 3  # 3 is for jpeg cover art

for filename in os.listdir(input_folder):
    if filename.endswith(".flac"):
        # Remove prefixed numbers
        output_filename = re.sub(r'^\d{2,3}\s-\s', '', filename.replace(".flac", "." + output_format))
        # Construct the full paths to the input and output files
        input_path = os.path.join(input_folder, filename)
        output_path = os.path.join(output_folder, output_filename)
        # Use subprocess to call the ffmpeg command to convert the FLAC to M4A
        call(["ffmpeg", "-i", input_path, "-c:a", "aac", "-b:a", quality + "k", "-vn", output_path])
        # Use Mutagen to add the cover art to the M4A file
        m4a_file = MP4(output_path)
        cover_art_path = os.path.join(input_folder, filename.replace(".flac", ".jpeg"))
        with open(cover_art_path, "rb") as f:
            cover_art_data = f.read()
        cover_art = MP4Cover(cover_art_data, imageformat=cover_art_type)
        m4a_file.tags["covr"] = [cover_art]
        m4a_file.save()