Raphaël G. Git Repositories - youtubedl/blob - youtube_dl/postprocessor/ffmpeg.py

   1 from __future__ import unicode_literals
   2
   3 import io
   4 import os
   5 import subprocess
   6 import time
   7 import re
   8
   9
  10 from .common import AudioConversionError, PostProcessor
  11
  12 from ..compat import (
  13     compat_subprocess_get_DEVNULL,
  14 )
  15 from ..utils import (
  16     encodeArgument,
  17     encodeFilename,
  18     get_exe_version,
  19     is_outdated_version,
  20     PostProcessingError,
  21     prepend_extension,
  22     shell_quote,
  23     subtitles_filename,
  24     dfxp2srt,
  25     ISO639Utils,
  26     replace_extension,
  27 )
  28
  29
  30 EXT_TO_OUT_FORMATS = {
  31     'aac': 'adts',
  32     'flac': 'flac',
  33     'm4a': 'ipod',
  34     'mka': 'matroska',
  35     'mkv': 'matroska',
  36     'mpg': 'mpeg',
  37     'ogv': 'ogg',
  38     'ts': 'mpegts',
  39     'wma': 'asf',
  40     'wmv': 'asf',
  41 }
  42 ACODECS = {
  43     'mp3': 'libmp3lame',
  44     'aac': 'aac',
  45     'flac': 'flac',
  46     'm4a': 'aac',
  47     'opus': 'opus',
  48     'vorbis': 'libvorbis',
  49     'wav': None,
  50 }
  51
  52
  53 class FFmpegPostProcessorError(PostProcessingError):
  54     pass
  55
  56
  57 class FFmpegPostProcessor(PostProcessor):
  58     def __init__(self, downloader=None):
  59         PostProcessor.__init__(self, downloader)
  60         self._determine_executables()
  61
  62     def check_version(self):
  63         if not self.available:
  64             raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
  65
  66         required_version = '10-0' if self.basename == 'avconv' else '1.0'
  67         if is_outdated_version(
  68                 self._versions[self.basename], required_version):
  69             warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
  70                 self.basename, self.basename, required_version)
  71             if self._downloader:
  72                 self._downloader.report_warning(warning)
  73
  74     @staticmethod
  75     def get_versions(downloader=None):
  76         return FFmpegPostProcessor(downloader)._versions
  77
  78     def _determine_executables(self):
  79         programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
  80         prefer_ffmpeg = False
  81
  82         self.basename = None
  83         self.probe_basename = None
  84
  85         self._paths = None
  86         self._versions = None
  87         if self._downloader:
  88             prefer_ffmpeg = self._downloader.params.get('prefer_ffmpeg', False)
  89             location = self._downloader.params.get('ffmpeg_location')
  90             if location is not None:
  91                 if not os.path.exists(location):
  92                     self._downloader.report_warning(
  93                         'ffmpeg-location %s does not exist! '
  94                         'Continuing without avconv/ffmpeg.' % (location))
  95                     self._versions = {}
  96                     return
  97                 elif not os.path.isdir(location):
  98                     basename = os.path.splitext(os.path.basename(location))[0]
  99                     if basename not in programs:
 100                         self._downloader.report_warning(
 101                             'Cannot identify executable %s, its basename should be one of %s. '
 102                             'Continuing without avconv/ffmpeg.' %
 103                             (location, ', '.join(programs)))
 104                         self._versions = {}
 105                         return None
 106                     location = os.path.dirname(os.path.abspath(location))
 107                     if basename in ('ffmpeg', 'ffprobe'):
 108                         prefer_ffmpeg = True
 109
 110                 self._paths = dict(
 111                     (p, os.path.join(location, p)) for p in programs)
 112                 self._versions = dict(
 113                     (p, get_exe_version(self._paths[p], args=['-version']))
 114                     for p in programs)
 115         if self._versions is None:
 116             self._versions = dict(
 117                 (p, get_exe_version(p, args=['-version'])) for p in programs)
 118             self._paths = dict((p, p) for p in programs)
 119
 120         if prefer_ffmpeg:
 121             prefs = ('ffmpeg', 'avconv')
 122         else:
 123             prefs = ('avconv', 'ffmpeg')
 124         for p in prefs:
 125             if self._versions[p]:
 126                 self.basename = p
 127                 break
 128
 129         if prefer_ffmpeg:
 130             prefs = ('ffprobe', 'avprobe')
 131         else:
 132             prefs = ('avprobe', 'ffprobe')
 133         for p in prefs:
 134             if self._versions[p]:
 135                 self.probe_basename = p
 136                 break
 137
 138     @property
 139     def available(self):
 140         return self.basename is not None
 141
 142     @property
 143     def executable(self):
 144         return self._paths[self.basename]
 145
 146     @property
 147     def probe_available(self):
 148         return self.probe_basename is not None
 149
 150     @property
 151     def probe_executable(self):
 152         return self._paths[self.probe_basename]
 153
 154     def get_audio_codec(self, path):
 155         if not self.probe_available:
 156             raise PostProcessingError('ffprobe or avprobe not found. Please install one.')
 157         try:
 158             cmd = [
 159                 encodeFilename(self.probe_executable, True),
 160                 encodeArgument('-show_streams'),
 161                 encodeFilename(self._ffmpeg_filename_argument(path), True)]
 162             if self._downloader.params.get('verbose', False):
 163                 self._downloader.to_screen('[debug] %s command line: %s' % (self.basename, shell_quote(cmd)))
 164             handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE, stdin=subprocess.PIPE)
 165             output = handle.communicate()[0]
 166             if handle.wait() != 0:
 167                 return None
 168         except (IOError, OSError):
 169             return None
 170         audio_codec = None
 171         for line in output.decode('ascii', 'ignore').split('\n'):
 172             if line.startswith('codec_name='):
 173                 audio_codec = line.split('=')[1].strip()
 174             elif line.strip() == 'codec_type=audio' and audio_codec is not None:
 175                 return audio_codec
 176         return None
 177
 178     def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
 179         self.check_version()
 180
 181         oldest_mtime = min(
 182             os.stat(encodeFilename(path)).st_mtime for path in input_paths)
 183
 184         opts += self._configuration_args()
 185
 186         files_cmd = []
 187         for path in input_paths:
 188             files_cmd.extend([
 189                 encodeArgument('-i'),
 190                 encodeFilename(self._ffmpeg_filename_argument(path), True)
 191             ])
 192         cmd = ([encodeFilename(self.executable, True), encodeArgument('-y')] +
 193                files_cmd +
 194                [encodeArgument(o) for o in opts] +
 195                [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
 196
 197         if self._downloader.params.get('verbose', False):
 198             self._downloader.to_screen('[debug] ffmpeg command line: %s' % shell_quote(cmd))
 199         p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
 200         stdout, stderr = p.communicate()
 201         if p.returncode != 0:
 202             stderr = stderr.decode('utf-8', 'replace')
 203             msg = stderr.strip().split('\n')[-1]
 204             raise FFmpegPostProcessorError(msg)
 205         self.try_utime(out_path, oldest_mtime, oldest_mtime)
 206
 207     def run_ffmpeg(self, path, out_path, opts):
 208         self.run_ffmpeg_multiple_files([path], out_path, opts)
 209
 210     def _ffmpeg_filename_argument(self, fn):
 211         # Always use 'file:' because the filename may contain ':' (ffmpeg
 212         # interprets that as a protocol) or can start with '-' (-- is broken in
 213         # ffmpeg, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details)
 214         # Also leave '-' intact in order not to break streaming to stdout.
 215         return 'file:' + fn if fn != '-' else fn
 216
 217
 218 class FFmpegExtractAudioPP(FFmpegPostProcessor):
 219     def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
 220         FFmpegPostProcessor.__init__(self, downloader)
 221         if preferredcodec is None:
 222             preferredcodec = 'best'
 223         self._preferredcodec = preferredcodec
 224         self._preferredquality = preferredquality
 225         self._nopostoverwrites = nopostoverwrites
 226
 227     def run_ffmpeg(self, path, out_path, codec, more_opts):
 228         if codec is None:
 229             acodec_opts = []
 230         else:
 231             acodec_opts = ['-acodec', codec]
 232         opts = ['-vn'] + acodec_opts + more_opts
 233         try:
 234             FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
 235         except FFmpegPostProcessorError as err:
 236             raise AudioConversionError(err.msg)
 237
 238     def run(self, information):
 239         path = information['filepath']
 240
 241         filecodec = self.get_audio_codec(path)
 242         if filecodec is None:
 243             raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe')
 244
 245         more_opts = []
 246         if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
 247             if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
 248                 # Lossless, but in another container
 249                 acodec = 'copy'
 250                 extension = 'm4a'
 251                 more_opts = ['-bsf:a', 'aac_adtstoasc']
 252             elif filecodec in ['aac', 'flac', 'mp3', 'vorbis', 'opus']:
 253                 # Lossless if possible
 254                 acodec = 'copy'
 255                 extension = filecodec
 256                 if filecodec == 'aac':
 257                     more_opts = ['-f', 'adts']
 258                 if filecodec == 'vorbis':
 259                     extension = 'ogg'
 260             else:
 261                 # MP3 otherwise.
 262                 acodec = 'libmp3lame'
 263                 extension = 'mp3'
 264                 more_opts = []
 265                 if self._preferredquality is not None:
 266                     if int(self._preferredquality) < 10:
 267                         more_opts += ['-q:a', self._preferredquality]
 268                     else:
 269                         more_opts += ['-b:a', self._preferredquality + 'k']
 270         else:
 271             # We convert the audio (lossy if codec is lossy)
 272             acodec = ACODECS[self._preferredcodec]
 273             extension = self._preferredcodec
 274             more_opts = []
 275             if self._preferredquality is not None:
 276                 # The opus codec doesn't support the -aq option
 277                 if int(self._preferredquality) < 10 and extension != 'opus':
 278                     more_opts += ['-q:a', self._preferredquality]
 279                 else:
 280                     more_opts += ['-b:a', self._preferredquality + 'k']
 281             if self._preferredcodec == 'aac':
 282                 more_opts += ['-f', 'adts']
 283             if self._preferredcodec == 'm4a':
 284                 more_opts += ['-bsf:a', 'aac_adtstoasc']
 285             if self._preferredcodec == 'vorbis':
 286                 extension = 'ogg'
 287             if self._preferredcodec == 'wav':
 288                 extension = 'wav'
 289                 more_opts += ['-f', 'wav']
 290
 291         prefix, sep, ext = path.rpartition('.')  # not os.path.splitext, since the latter does not work on unicode in all setups
 292         new_path = prefix + sep + extension
 293
 294         information['filepath'] = new_path
 295         information['ext'] = extension
 296
 297         # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
 298         if (new_path == path or
 299                 (self._nopostoverwrites and os.path.exists(encodeFilename(new_path)))):
 300             self._downloader.to_screen('[ffmpeg] Post-process file %s exists, skipping' % new_path)
 301             return [], information
 302
 303         try:
 304             self._downloader.to_screen('[ffmpeg] Destination: ' + new_path)
 305             self.run_ffmpeg(path, new_path, acodec, more_opts)
 306         except AudioConversionError as e:
 307             raise PostProcessingError(
 308                 'audio conversion failed: ' + e.msg)
 309         except Exception:
 310             raise PostProcessingError('error running ' + self.basename)
 311
 312         # Try to update the date time for extracted audio file.
 313         if information.get('filetime') is not None:
 314             self.try_utime(
 315                 new_path, time.time(), information['filetime'],
 316                 errnote='Cannot update utime of audio file')
 317
 318         return [path], information
 319
 320
 321 class FFmpegVideoConvertorPP(FFmpegPostProcessor):
 322     def __init__(self, downloader=None, preferedformat=None):
 323         super(FFmpegVideoConvertorPP, self).__init__(downloader)
 324         self._preferedformat = preferedformat
 325
 326     def run(self, information):
 327         path = information['filepath']
 328         if information['ext'] == self._preferedformat:
 329             self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
 330             return [], information
 331         options = []
 332         if self._preferedformat == 'avi':
 333             options.extend(['-c:v', 'libxvid', '-vtag', 'XVID'])
 334         prefix, sep, ext = path.rpartition('.')
 335         outpath = prefix + sep + self._preferedformat
 336         self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath)
 337         self.run_ffmpeg(path, outpath, options)
 338         information['filepath'] = outpath
 339         information['format'] = self._preferedformat
 340         information['ext'] = self._preferedformat
 341         return [path], information
 342
 343
 344 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
 345     def run(self, information):
 346         if information['ext'] not in ('mp4', 'webm', 'mkv'):
 347             self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4, webm or mkv files')
 348             return [], information
 349         subtitles = information.get('requested_subtitles')
 350         if not subtitles:
 351             self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed')
 352             return [], information
 353
 354         filename = information['filepath']
 355
 356         ext = information['ext']
 357         sub_langs = []
 358         sub_filenames = []
 359         webm_vtt_warn = False
 360
 361         for lang, sub_info in subtitles.items():
 362             sub_ext = sub_info['ext']
 363             if ext != 'webm' or ext == 'webm' and sub_ext == 'vtt':
 364                 sub_langs.append(lang)
 365                 sub_filenames.append(subtitles_filename(filename, lang, sub_ext))
 366             else:
 367                 if not webm_vtt_warn and ext == 'webm' and sub_ext != 'vtt':
 368                     webm_vtt_warn = True
 369                     self._downloader.to_screen('[ffmpeg] Only WebVTT subtitles can be embedded in webm files')
 370
 371         if not sub_langs:
 372             return [], information
 373
 374         input_files = [filename] + sub_filenames
 375
 376         opts = [
 377             '-map', '0',
 378             '-c', 'copy',
 379             # Don't copy the existing subtitles, we may be running the
 380             # postprocessor a second time
 381             '-map', '-0:s',
 382         ]
 383         if information['ext'] == 'mp4':
 384             opts += ['-c:s', 'mov_text']
 385         for (i, lang) in enumerate(sub_langs):
 386             opts.extend(['-map', '%d:0' % (i + 1)])
 387             lang_code = ISO639Utils.short2long(lang)
 388             if lang_code is not None:
 389                 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
 390
 391         temp_filename = prepend_extension(filename, 'temp')
 392         self._downloader.to_screen('[ffmpeg] Embedding subtitles in \'%s\'' % filename)
 393         self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
 394         os.remove(encodeFilename(filename))
 395         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 396
 397         return sub_filenames, information
 398
 399
 400 class FFmpegMetadataPP(FFmpegPostProcessor):
 401     def run(self, info):
 402         metadata = {}
 403
 404         def add(meta_list, info_list=None):
 405             if not info_list:
 406                 info_list = meta_list
 407             if not isinstance(meta_list, (list, tuple)):
 408                 meta_list = (meta_list,)
 409             if not isinstance(info_list, (list, tuple)):
 410                 info_list = (info_list,)
 411             for info_f in info_list:
 412                 if info.get(info_f) is not None:
 413                     for meta_f in meta_list:
 414                         metadata[meta_f] = info[info_f]
 415                     break
 416
 417         add('title', ('track', 'title'))
 418         add('date', 'upload_date')
 419         add(('description', 'comment'), 'description')
 420         add('purl', 'webpage_url')
 421         add('track', 'track_number')
 422         add('artist', ('artist', 'creator', 'uploader', 'uploader_id'))
 423         add('genre')
 424         add('album')
 425         add('album_artist')
 426         add('disc', 'disc_number')
 427
 428         if not metadata:
 429             self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')
 430             return [], info
 431
 432         filename = info['filepath']
 433         temp_filename = prepend_extension(filename, 'temp')
 434         in_filenames = [filename]
 435         options = []
 436
 437         if info['ext'] == 'm4a':
 438             options.extend(['-vn', '-acodec', 'copy'])
 439         else:
 440             options.extend(['-c', 'copy'])
 441
 442         for (name, value) in metadata.items():
 443             options.extend(['-metadata', '%s=%s' % (name, value)])
 444
 445         chapters = info.get('chapters', [])
 446         if chapters:
 447             metadata_filename = replace_extension(filename, 'meta')
 448             with io.open(metadata_filename, 'wt', encoding='utf-8') as f:
 449                 def ffmpeg_escape(text):
 450                     return re.sub(r'(=|;|#|\\|\n)', r'\\\1', text)
 451
 452                 metadata_file_content = ';FFMETADATA1\n'
 453                 for chapter in chapters:
 454                     metadata_file_content += '[CHAPTER]\nTIMEBASE=1/1000\n'
 455                     metadata_file_content += 'START=%d\n' % (chapter['start_time'] * 1000)
 456                     metadata_file_content += 'END=%d\n' % (chapter['end_time'] * 1000)
 457                     chapter_title = chapter.get('title')
 458                     if chapter_title:
 459                         metadata_file_content += 'title=%s\n' % ffmpeg_escape(chapter_title)
 460                 f.write(metadata_file_content)
 461                 in_filenames.append(metadata_filename)
 462                 options.extend(['-map_metadata', '1'])
 463
 464         self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
 465         self.run_ffmpeg_multiple_files(in_filenames, temp_filename, options)
 466         if chapters:
 467             os.remove(metadata_filename)
 468         os.remove(encodeFilename(filename))
 469         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 470         return [], info
 471
 472
 473 class FFmpegMergerPP(FFmpegPostProcessor):
 474     def run(self, info):
 475         filename = info['filepath']
 476         temp_filename = prepend_extension(filename, 'temp')
 477         args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0']
 478         self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename)
 479         self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)
 480         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 481         return info['__files_to_merge'], info
 482
 483     def can_merge(self):
 484         # TODO: figure out merge-capable ffmpeg version
 485         if self.basename != 'avconv':
 486             return True
 487
 488         required_version = '10-0'
 489         if is_outdated_version(
 490                 self._versions[self.basename], required_version):
 491             warning = ('Your copy of %s is outdated and unable to properly mux separate video and audio files, '
 492                        'youtube-dl will download single file media. '
 493                        'Update %s to version %s or newer to fix this.') % (
 494                            self.basename, self.basename, required_version)
 495             if self._downloader:
 496                 self._downloader.report_warning(warning)
 497             return False
 498         return True
 499
 500
 501 class FFmpegFixupStretchedPP(FFmpegPostProcessor):
 502     def run(self, info):
 503         stretched_ratio = info.get('stretched_ratio')
 504         if stretched_ratio is None or stretched_ratio == 1:
 505             return [], info
 506
 507         filename = info['filepath']
 508         temp_filename = prepend_extension(filename, 'temp')
 509
 510         options = ['-c', 'copy', '-aspect', '%f' % stretched_ratio]
 511         self._downloader.to_screen('[ffmpeg] Fixing aspect ratio in "%s"' % filename)
 512         self.run_ffmpeg(filename, temp_filename, options)
 513
 514         os.remove(encodeFilename(filename))
 515         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 516
 517         return [], info
 518
 519
 520 class FFmpegFixupM4aPP(FFmpegPostProcessor):
 521     def run(self, info):
 522         if info.get('container') != 'm4a_dash':
 523             return [], info
 524
 525         filename = info['filepath']
 526         temp_filename = prepend_extension(filename, 'temp')
 527
 528         options = ['-c', 'copy', '-f', 'mp4']
 529         self._downloader.to_screen('[ffmpeg] Correcting container in "%s"' % filename)
 530         self.run_ffmpeg(filename, temp_filename, options)
 531
 532         os.remove(encodeFilename(filename))
 533         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 534
 535         return [], info
 536
 537
 538 class FFmpegFixupM3u8PP(FFmpegPostProcessor):
 539     def run(self, info):
 540         filename = info['filepath']
 541         if self.get_audio_codec(filename) == 'aac':
 542             temp_filename = prepend_extension(filename, 'temp')
 543
 544             options = ['-c', 'copy', '-f', 'mp4', '-bsf:a', 'aac_adtstoasc']
 545             self._downloader.to_screen('[ffmpeg] Fixing malformed AAC bitstream in "%s"' % filename)
 546             self.run_ffmpeg(filename, temp_filename, options)
 547
 548             os.remove(encodeFilename(filename))
 549             os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 550         return [], info
 551
 552
 553 class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
 554     def __init__(self, downloader=None, format=None):
 555         super(FFmpegSubtitlesConvertorPP, self).__init__(downloader)
 556         self.format = format
 557
 558     def run(self, info):
 559         subs = info.get('requested_subtitles')
 560         filename = info['filepath']
 561         new_ext = self.format
 562         new_format = new_ext
 563         if new_format == 'vtt':
 564             new_format = 'webvtt'
 565         if subs is None:
 566             self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to convert')
 567             return [], info
 568         self._downloader.to_screen('[ffmpeg] Converting subtitles')
 569         sub_filenames = []
 570         for lang, sub in subs.items():
 571             ext = sub['ext']
 572             if ext == new_ext:
 573                 self._downloader.to_screen(
 574                     '[ffmpeg] Subtitle file for %s is already in the requested format' % new_ext)
 575                 continue
 576             old_file = subtitles_filename(filename, lang, ext)
 577             sub_filenames.append(old_file)
 578             new_file = subtitles_filename(filename, lang, new_ext)
 579
 580             if ext in ('dfxp', 'ttml', 'tt'):
 581                 self._downloader.report_warning(
 582                     'You have requested to convert dfxp (TTML) subtitles into another format, '
 583                     'which results in style information loss')
 584
 585                 dfxp_file = old_file
 586                 srt_file = subtitles_filename(filename, lang, 'srt')
 587
 588                 with open(dfxp_file, 'rb') as f:
 589                     srt_data = dfxp2srt(f.read())
 590
 591                 with io.open(srt_file, 'wt', encoding='utf-8') as f:
 592                     f.write(srt_data)
 593                 old_file = srt_file
 594
 595                 subs[lang] = {
 596                     'ext': 'srt',
 597                     'data': srt_data
 598                 }
 599
 600                 if new_ext == 'srt':
 601                     continue
 602                 else:
 603                     sub_filenames.append(srt_file)
 604
 605             self.run_ffmpeg(old_file, new_file, ['-f', new_format])
 606
 607             with io.open(new_file, 'rt', encoding='utf-8') as f:
 608                 subs[lang] = {
 609                     'ext': new_ext,
 610                     'data': f.read(),
 611                 }
 612
 613         return sub_filenames, info