rename a bunch of mp4 files to specified naming pattern.

rename_mp4.py

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

import os
import os.path
import shutil
import re


FILENAME = re.compile("^(?P<number>\d\d)_(?P<title>.*)-(?P<name>[a-z]*-[a-z]*)")

for dirpath, dirnames, filenames in os.walk('.'):
    for filename in filenames:
        if filename.endswith(".py") or filename.startswith('.'):
            continue

        if not filename.lower().endswith('.mp4'):
            continue

        full_src_path = os.path.join(dirpath, filename)
        if not os.path.exists(full_src_path):
            print 'no exist : ' + full_src_path
            continue
        if not os.path.isfile(full_src_path):
            print 'not file : ' + full_src_path
            continue

        name, ext = os.path.splitext(filename)
        r = FILENAME.search(name)
        if not r:
            print "not match : " + name
            continue
        result = r.groupdict()
        number = result['number']
        title = result['title']
        person = result['name']
        dest = "%s - %s - %s.mp4" % (number, title.replace('-', ' ').title(), person.replace('-', ' ').title())
        full_dest_path = os.path.join(dirpath, dest)
        #print full_dest_path
        shutil.move(full_src_path, full_dest_path)
        print 'move - ' + dest