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

   1 from __future__ import unicode_literals
   2
   3 import os
   4 import subprocess
   5 import sys
   6 import time
   7
   8
   9 from .common import AudioConversionError, PostProcessor
  10
  11 from ..compat import (
  12     compat_subprocess_get_DEVNULL,
  13 )
  14 from ..utils import (
  15     encodeArgument,
  16     encodeFilename,
  17     get_exe_version,
  18     is_outdated_version,
  19     PostProcessingError,
  20     prepend_extension,
  21     shell_quote,
  22     subtitles_filename,
  23 )
  24
  25
  26 class FFmpegPostProcessorError(PostProcessingError):
  27     pass
  28
  29
  30 class FFmpegPostProcessor(PostProcessor):
  31     def __init__(self, downloader=None, deletetempfiles=False):
  32         PostProcessor.__init__(self, downloader)
  33         self._versions = self.get_versions()
  34         self._deletetempfiles = deletetempfiles
  35
  36     def check_version(self):
  37         if not self._executable:
  38             raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.')
  39
  40         REQUIRED_VERSION = '1.0'
  41         if is_outdated_version(
  42                 self._versions[self._executable], REQUIRED_VERSION):
  43             warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
  44                 self._executable, self._executable, REQUIRED_VERSION)
  45             if self._downloader:
  46                 self._downloader.report_warning(warning)
  47
  48     @staticmethod
  49     def get_versions():
  50         programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
  51         return dict((p, get_exe_version(p, args=['-version'])) for p in programs)
  52
  53     @property
  54     def _executable(self):
  55         if self._downloader.params.get('prefer_ffmpeg', False):
  56             prefs = ('ffmpeg', 'avconv')
  57         else:
  58             prefs = ('avconv', 'ffmpeg')
  59         for p in prefs:
  60             if self._versions[p]:
  61                 return p
  62         return None
  63
  64     @property
  65     def _probe_executable(self):
  66         if self._downloader.params.get('prefer_ffmpeg', False):
  67             prefs = ('ffprobe', 'avprobe')
  68         else:
  69             prefs = ('avprobe', 'ffprobe')
  70         for p in prefs:
  71             if self._versions[p]:
  72                 return p
  73         return None
  74
  75     def _uses_avconv(self):
  76         return self._executable == 'avconv'
  77
  78     def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
  79         self.check_version()
  80
  81         files_cmd = []
  82         for path in input_paths:
  83             files_cmd.extend(['-i', encodeFilename(path, True)])
  84         cmd = ([self._executable, '-y'] + files_cmd
  85                + [encodeArgument(o) for o in opts] +
  86                [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
  87
  88         if self._downloader.params.get('verbose', False):
  89             self._downloader.to_screen('[debug] ffmpeg command line: %s' % shell_quote(cmd))
  90         p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  91         stdout, stderr = p.communicate()
  92         if p.returncode != 0:
  93             stderr = stderr.decode('utf-8', 'replace')
  94             msg = stderr.strip().split('\n')[-1]
  95             raise FFmpegPostProcessorError(msg)
  96         if self._deletetempfiles:
  97             for ipath in input_paths:
  98                 os.remove(ipath)
  99
 100     def run_ffmpeg(self, path, out_path, opts):
 101         self.run_ffmpeg_multiple_files([path], out_path, opts)
 102
 103     def _ffmpeg_filename_argument(self, fn):
 104         # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
 105         if fn.startswith('-'):
 106             return './' + fn
 107         return fn
 108
 109
 110 class FFmpegExtractAudioPP(FFmpegPostProcessor):
 111     def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
 112         FFmpegPostProcessor.__init__(self, downloader)
 113         if preferredcodec is None:
 114             preferredcodec = 'best'
 115         self._preferredcodec = preferredcodec
 116         self._preferredquality = preferredquality
 117         self._nopostoverwrites = nopostoverwrites
 118
 119     def get_audio_codec(self, path):
 120
 121         if not self._probe_executable:
 122             raise PostProcessingError('ffprobe or avprobe not found. Please install one.')
 123         try:
 124             cmd = [
 125                 self._probe_executable,
 126                 '-show_streams',
 127                 encodeFilename(self._ffmpeg_filename_argument(path), True)]
 128             handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
 129             output = handle.communicate()[0]
 130             if handle.wait() != 0:
 131                 return None
 132         except (IOError, OSError):
 133             return None
 134         audio_codec = None
 135         for line in output.decode('ascii', 'ignore').split('\n'):
 136             if line.startswith('codec_name='):
 137                 audio_codec = line.split('=')[1].strip()
 138             elif line.strip() == 'codec_type=audio' and audio_codec is not None:
 139                 return audio_codec
 140         return None
 141
 142     def run_ffmpeg(self, path, out_path, codec, more_opts):
 143         if codec is None:
 144             acodec_opts = []
 145         else:
 146             acodec_opts = ['-acodec', codec]
 147         opts = ['-vn'] + acodec_opts + more_opts
 148         try:
 149             FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
 150         except FFmpegPostProcessorError as err:
 151             raise AudioConversionError(err.msg)
 152
 153     def run(self, information):
 154         path = information['filepath']
 155
 156         filecodec = self.get_audio_codec(path)
 157         if filecodec is None:
 158             raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe')
 159
 160         uses_avconv = self._uses_avconv()
 161         more_opts = []
 162         if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
 163             if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
 164                 # Lossless, but in another container
 165                 acodec = 'copy'
 166                 extension = 'm4a'
 167                 more_opts = ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
 168             elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
 169                 # Lossless if possible
 170                 acodec = 'copy'
 171                 extension = filecodec
 172                 if filecodec == 'aac':
 173                     more_opts = ['-f', 'adts']
 174                 if filecodec == 'vorbis':
 175                     extension = 'ogg'
 176             else:
 177                 # MP3 otherwise.
 178                 acodec = 'libmp3lame'
 179                 extension = 'mp3'
 180                 more_opts = []
 181                 if self._preferredquality is not None:
 182                     if int(self._preferredquality) < 10:
 183                         more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
 184                     else:
 185                         more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
 186         else:
 187             # We convert the audio (lossy)
 188             acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
 189             extension = self._preferredcodec
 190             more_opts = []
 191             if self._preferredquality is not None:
 192                 # The opus codec doesn't support the -aq option
 193                 if int(self._preferredquality) < 10 and extension != 'opus':
 194                     more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
 195                 else:
 196                     more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
 197             if self._preferredcodec == 'aac':
 198                 more_opts += ['-f', 'adts']
 199             if self._preferredcodec == 'm4a':
 200                 more_opts += ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
 201             if self._preferredcodec == 'vorbis':
 202                 extension = 'ogg'
 203             if self._preferredcodec == 'wav':
 204                 extension = 'wav'
 205                 more_opts += ['-f', 'wav']
 206
 207         prefix, sep, ext = path.rpartition('.')  # not os.path.splitext, since the latter does not work on unicode in all setups
 208         new_path = prefix + sep + extension
 209
 210         # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
 211         if new_path == path:
 212             self._nopostoverwrites = True
 213
 214         try:
 215             if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
 216                 self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path)
 217             else:
 218                 self._downloader.to_screen('[' + self._executable + '] Destination: ' + new_path)
 219                 self.run_ffmpeg(path, new_path, acodec, more_opts)
 220         except:
 221             etype, e, tb = sys.exc_info()
 222             if isinstance(e, AudioConversionError):
 223                 msg = 'audio conversion failed: ' + e.msg
 224             else:
 225                 msg = 'error running ' + self._executable
 226             raise PostProcessingError(msg)
 227
 228         # Try to update the date time for extracted audio file.
 229         if information.get('filetime') is not None:
 230             try:
 231                 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
 232             except:
 233                 self._downloader.report_warning('Cannot update utime of audio file')
 234
 235         information['filepath'] = new_path
 236         return self._nopostoverwrites, information
 237
 238
 239 class FFmpegVideoConvertor(FFmpegPostProcessor):
 240     def __init__(self, downloader=None, preferedformat=None):
 241         super(FFmpegVideoConvertor, self).__init__(downloader)
 242         self._preferedformat = preferedformat
 243
 244     def run(self, information):
 245         path = information['filepath']
 246         prefix, sep, ext = path.rpartition('.')
 247         outpath = prefix + sep + self._preferedformat
 248         if information['ext'] == self._preferedformat:
 249             self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
 250             return True, information
 251         self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath)
 252         self.run_ffmpeg(path, outpath, [])
 253         information['filepath'] = outpath
 254         information['format'] = self._preferedformat
 255         information['ext'] = self._preferedformat
 256         return False, information
 257
 258
 259 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
 260     # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
 261     _lang_map = {
 262         'aa': 'aar',
 263         'ab': 'abk',
 264         'ae': 'ave',
 265         'af': 'afr',
 266         'ak': 'aka',
 267         'am': 'amh',
 268         'an': 'arg',
 269         'ar': 'ara',
 270         'as': 'asm',
 271         'av': 'ava',
 272         'ay': 'aym',
 273         'az': 'aze',
 274         'ba': 'bak',
 275         'be': 'bel',
 276         'bg': 'bul',
 277         'bh': 'bih',
 278         'bi': 'bis',
 279         'bm': 'bam',
 280         'bn': 'ben',
 281         'bo': 'bod',
 282         'br': 'bre',
 283         'bs': 'bos',
 284         'ca': 'cat',
 285         'ce': 'che',
 286         'ch': 'cha',
 287         'co': 'cos',
 288         'cr': 'cre',
 289         'cs': 'ces',
 290         'cu': 'chu',
 291         'cv': 'chv',
 292         'cy': 'cym',
 293         'da': 'dan',
 294         'de': 'deu',
 295         'dv': 'div',
 296         'dz': 'dzo',
 297         'ee': 'ewe',
 298         'el': 'ell',
 299         'en': 'eng',
 300         'eo': 'epo',
 301         'es': 'spa',
 302         'et': 'est',
 303         'eu': 'eus',
 304         'fa': 'fas',
 305         'ff': 'ful',
 306         'fi': 'fin',
 307         'fj': 'fij',
 308         'fo': 'fao',
 309         'fr': 'fra',
 310         'fy': 'fry',
 311         'ga': 'gle',
 312         'gd': 'gla',
 313         'gl': 'glg',
 314         'gn': 'grn',
 315         'gu': 'guj',
 316         'gv': 'glv',
 317         'ha': 'hau',
 318         'he': 'heb',
 319         'hi': 'hin',
 320         'ho': 'hmo',
 321         'hr': 'hrv',
 322         'ht': 'hat',
 323         'hu': 'hun',
 324         'hy': 'hye',
 325         'hz': 'her',
 326         'ia': 'ina',
 327         'id': 'ind',
 328         'ie': 'ile',
 329         'ig': 'ibo',
 330         'ii': 'iii',
 331         'ik': 'ipk',
 332         'io': 'ido',
 333         'is': 'isl',
 334         'it': 'ita',
 335         'iu': 'iku',
 336         'ja': 'jpn',
 337         'jv': 'jav',
 338         'ka': 'kat',
 339         'kg': 'kon',
 340         'ki': 'kik',
 341         'kj': 'kua',
 342         'kk': 'kaz',
 343         'kl': 'kal',
 344         'km': 'khm',
 345         'kn': 'kan',
 346         'ko': 'kor',
 347         'kr': 'kau',
 348         'ks': 'kas',
 349         'ku': 'kur',
 350         'kv': 'kom',
 351         'kw': 'cor',
 352         'ky': 'kir',
 353         'la': 'lat',
 354         'lb': 'ltz',
 355         'lg': 'lug',
 356         'li': 'lim',
 357         'ln': 'lin',
 358         'lo': 'lao',
 359         'lt': 'lit',
 360         'lu': 'lub',
 361         'lv': 'lav',
 362         'mg': 'mlg',
 363         'mh': 'mah',
 364         'mi': 'mri',
 365         'mk': 'mkd',
 366         'ml': 'mal',
 367         'mn': 'mon',
 368         'mr': 'mar',
 369         'ms': 'msa',
 370         'mt': 'mlt',
 371         'my': 'mya',
 372         'na': 'nau',
 373         'nb': 'nob',
 374         'nd': 'nde',
 375         'ne': 'nep',
 376         'ng': 'ndo',
 377         'nl': 'nld',
 378         'nn': 'nno',
 379         'no': 'nor',
 380         'nr': 'nbl',
 381         'nv': 'nav',
 382         'ny': 'nya',
 383         'oc': 'oci',
 384         'oj': 'oji',
 385         'om': 'orm',
 386         'or': 'ori',
 387         'os': 'oss',
 388         'pa': 'pan',
 389         'pi': 'pli',
 390         'pl': 'pol',
 391         'ps': 'pus',
 392         'pt': 'por',
 393         'qu': 'que',
 394         'rm': 'roh',
 395         'rn': 'run',
 396         'ro': 'ron',
 397         'ru': 'rus',
 398         'rw': 'kin',
 399         'sa': 'san',
 400         'sc': 'srd',
 401         'sd': 'snd',
 402         'se': 'sme',
 403         'sg': 'sag',
 404         'si': 'sin',
 405         'sk': 'slk',
 406         'sl': 'slv',
 407         'sm': 'smo',
 408         'sn': 'sna',
 409         'so': 'som',
 410         'sq': 'sqi',
 411         'sr': 'srp',
 412         'ss': 'ssw',
 413         'st': 'sot',
 414         'su': 'sun',
 415         'sv': 'swe',
 416         'sw': 'swa',
 417         'ta': 'tam',
 418         'te': 'tel',
 419         'tg': 'tgk',
 420         'th': 'tha',
 421         'ti': 'tir',
 422         'tk': 'tuk',
 423         'tl': 'tgl',
 424         'tn': 'tsn',
 425         'to': 'ton',
 426         'tr': 'tur',
 427         'ts': 'tso',
 428         'tt': 'tat',
 429         'tw': 'twi',
 430         'ty': 'tah',
 431         'ug': 'uig',
 432         'uk': 'ukr',
 433         'ur': 'urd',
 434         'uz': 'uzb',
 435         've': 'ven',
 436         'vi': 'vie',
 437         'vo': 'vol',
 438         'wa': 'wln',
 439         'wo': 'wol',
 440         'xh': 'xho',
 441         'yi': 'yid',
 442         'yo': 'yor',
 443         'za': 'zha',
 444         'zh': 'zho',
 445         'zu': 'zul',
 446     }
 447
 448     def __init__(self, downloader=None, subtitlesformat='srt'):
 449         super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
 450         self._subformat = subtitlesformat
 451
 452     @classmethod
 453     def _conver_lang_code(cls, code):
 454         """Convert language code from ISO 639-1 to ISO 639-2/T"""
 455         return cls._lang_map.get(code[:2])
 456
 457     def run(self, information):
 458         if information['ext'] != 'mp4':
 459             self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 files')
 460             return True, information
 461         if not information.get('subtitles'):
 462             self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed')
 463             return True, information
 464
 465         sub_langs = [key for key in information['subtitles']]
 466         filename = information['filepath']
 467         input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
 468
 469         opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
 470         for (i, lang) in enumerate(sub_langs):
 471             opts.extend(['-map', '%d:0' % (i + 1), '-c:s:%d' % i, 'mov_text'])
 472             lang_code = self._conver_lang_code(lang)
 473             if lang_code is not None:
 474                 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
 475         opts.extend(['-f', 'mp4'])
 476
 477         temp_filename = filename + '.temp'
 478         self._downloader.to_screen('[ffmpeg] Embedding subtitles in \'%s\'' % filename)
 479         self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
 480         os.remove(encodeFilename(filename))
 481         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 482
 483         return True, information
 484
 485
 486 class FFmpegMetadataPP(FFmpegPostProcessor):
 487     def run(self, info):
 488         metadata = {}
 489         if info.get('title') is not None:
 490             metadata['title'] = info['title']
 491         if info.get('upload_date') is not None:
 492             metadata['date'] = info['upload_date']
 493         if info.get('uploader') is not None:
 494             metadata['artist'] = info['uploader']
 495         elif info.get('uploader_id') is not None:
 496             metadata['artist'] = info['uploader_id']
 497
 498         if not metadata:
 499             self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add')
 500             return True, info
 501
 502         filename = info['filepath']
 503         temp_filename = prepend_extension(filename, 'temp')
 504
 505         if info['ext'] == 'm4a':
 506             options = ['-vn', '-acodec', 'copy']
 507         else:
 508             options = ['-c', 'copy']
 509
 510         for (name, value) in metadata.items():
 511             options.extend(['-metadata', '%s=%s' % (name, value)])
 512
 513         self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename)
 514         self.run_ffmpeg(filename, temp_filename, options)
 515         os.remove(encodeFilename(filename))
 516         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 517         return True, info
 518
 519
 520 class FFmpegMergerPP(FFmpegPostProcessor):
 521     def run(self, info):
 522         filename = info['filepath']
 523         args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest']
 524         self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename)
 525         self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
 526         return True, info
 527
 528
 529 class FFmpegAudioFixPP(FFmpegPostProcessor):
 530     def run(self, info):
 531         filename = info['filepath']
 532         temp_filename = prepend_extension(filename, 'temp')
 533
 534         options = ['-vn', '-acodec', 'copy']
 535         self._downloader.to_screen('[ffmpeg] Fixing audio file "%s"' % filename)
 536         self.run_ffmpeg(filename, temp_filename, options)
 537
 538         os.remove(encodeFilename(filename))
 539         os.rename(encodeFilename(temp_filename), encodeFilename(filename))
 540
 541         return True, info