tagconvert.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import mutagen
import mutagen.easymp4
import sys

if len(sys.argv) < 3:
    print "Usage: %s src.flac dest.m4a" % (sys.argv[0])
    sys.exit(1)

flacfile = mutagen.File(sys.argv[1])
aacfile = mutagen.easymp4.EasyMP4(sys.argv[2])

for tag in flacfile:
    try:
        aacfile[tag] = flacfile[tag]
    except mutagen.easymp4.EasyMP4KeyError:
        pass

aacfile.save()