Python script to create necessary empty subtitle files for The Inner World

gen_innerworld_srt.py

#!/usr/bin/env python
# vim: set expandtab tabstop=4 shiftwidth=4:

# Creates empty subtitle files for The Inner World, a pretty great
# point-n-click adventure game: http://store.steampowered.com/app/251430
#
# Unfortunately the Linux version is not a great port, and has various issues.
# The biggest one is that some cutscenes won't play, and some of them are
# rather important.  Upon investigation, it turns out that the reason is that
# it's trying to use subtitle files which aren't there, and failing to play the
# whole video as a result.  A "solution" is to just create empty files for the
# ones that it's trying to load.
#
# This isn't entirely straightforward, as the subtitle files are *usually*
# named identically to the video files, but not always.  One notable difference
# is that MOV_195a.m4v uses the subtitle file MOV_195A_EN.srt - note the
# capital "A" in the subtitle file.  Other videos use the same case for that
# letter as in the video filename.
#
# So, this script basically just loops through the video list and constructs
# every subtitle filename which I think is likely to be used.  It's possible,
# of course, that this doesn't actually get all the files that it should --
# perhaps there's a subtitle file which follows a completely different pattern.
# So far it's been all right, though.
#
# At the moment you'd run this from the media/movies/ dir, but you can change
# those parameters with video_dir and subtitle_dir, below.  I'm also not sure
# if there are languages other than German and English, elsewhere...  The "EN"
# language setting below should be harmless even if you're using the german.
# In cases where the cutscenes have english, the German version is the one
# without any language specified in the filename, and we create those subtitle
# files, too.

import os
import re

# Constants
language = 'EN'
video_dir = '.'
subtitle_dir = '../Data/Subtitles'

mov_re = re.compile('^MOV_([0-9_]+)([a-dA-D])?(_{})?\.m4v$'.format(language))

def sub_file(filename):
    global subtitle_dir
    return os.path.join(subtitle_dir, filename)

for filename_movie in os.listdir(video_dir):
    if filename_movie[-4:] == '.m4v':
        match = mov_re.match(filename_movie)
        if match:
            number = match.group(1)
            letter = match.group(2)
            orig_language = match.group(3)

            # Construct a list of possible subtitle files.  Most of these
            # are unnecessary, but hopefully it'll at least end up providing
            # all the subtitle files which are required.
            possibilities = []
            if letter:
                possibilities.append(sub_file('MOV_{}{}.srt'.format(
                    number, letter.lower())))
                possibilities.append(sub_file('MOV_{}{}.srt'.format(
                    number, letter.upper())))
                possibilities.append(sub_file('MOV_{}{}_{}.srt'.format(
                    number, letter.lower(), language)))
                possibilities.append(sub_file('MOV_{}{}_{}.srt'.format(
                    number, letter.upper(), language)))
            else:
                possibilities.append(sub_file('MOV_{}.srt'.format(
                    number)))
                possibilities.append(sub_file('MOV_{}_{}.srt'.format(
                    number, language)))

            # Now loop through and create
            for filename_srt in possibilities:
                if os.path.exists(filename_srt):
                    #print('{} already exists'.format(filename_srt))
                    pass
                else:
                    print('{}: Creating {}...'.format(filename_movie, os.path.basename(filename_srt)))
                    with open(filename_srt, 'w') as df:
                        pass
        else:
            print('Movie filename not matched: {}'.format(filename_movie))

Thanks a lot for creating these. ;)