from __future__ import unicode_literals import io import os import subprocess import time from .common import AudioConversionError, PostProcessor from ..compat import ( compat_subprocess_get_DEVNULL, ) from ..utils import ( encodeArgument, encodeFilename, get_exe_version, is_outdated_version, PostProcessingError, prepend_extension, shell_quote, subtitles_filename, dfxp2srt, ) class FFmpegPostProcessorError(PostProcessingError): pass class FFmpegPostProcessor(PostProcessor): def __init__(self, downloader=None, extra_cmd_args=None): PostProcessor.__init__(self, downloader, extra_cmd_args) self._determine_executables() def check_version(self): if not self.available: raise FFmpegPostProcessorError('ffmpeg or avconv not found. Please install one.') required_version = '10-0' if self.basename == 'avconv' else '1.0' if is_outdated_version( self._versions[self.basename], required_version): warning = 'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % ( self.basename, self.basename, required_version) if self._downloader: self._downloader.report_warning(warning) @staticmethod def get_versions(downloader=None): return FFmpegPostProcessor(downloader)._versions def _determine_executables(self): programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe'] prefer_ffmpeg = self._downloader.params.get('prefer_ffmpeg', False) self.basename = None self.probe_basename = None self._paths = None self._versions = None if self._downloader: location = self._downloader.params.get('ffmpeg_location') if location is not None: if not os.path.exists(location): self._downloader.report_warning( 'ffmpeg-location %s does not exist! ' 'Continuing without avconv/ffmpeg.' % (location)) self._versions = {} return elif not os.path.isdir(location): basename = os.path.splitext(os.path.basename(location))[0] if basename not in programs: self._downloader.report_warning( 'Cannot identify executable %s, its basename should be one of %s. ' 'Continuing without avconv/ffmpeg.' % (location, ', '.join(programs))) self._versions = {} return None location = os.path.dirname(os.path.abspath(location)) if basename in ('ffmpeg', 'ffprobe'): prefer_ffmpeg = True self._paths = dict( (p, os.path.join(location, p)) for p in programs) self._versions = dict( (p, get_exe_version(self._paths[p], args=['-version'])) for p in programs) if self._versions is None: self._versions = dict( (p, get_exe_version(p, args=['-version'])) for p in programs) self._paths = dict((p, p) for p in programs) if prefer_ffmpeg: prefs = ('ffmpeg', 'avconv') else: prefs = ('avconv', 'ffmpeg') for p in prefs: if self._versions[p]: self.basename = p break if prefer_ffmpeg: prefs = ('ffprobe', 'avprobe') else: prefs = ('avprobe', 'ffprobe') for p in prefs: if self._versions[p]: self.probe_basename = p break @property def available(self): return self.basename is not None @property def executable(self): return self._paths[self.basename] @property def probe_available(self): return self.probe_basename is not None @property def probe_executable(self): return self._paths[self.probe_basename] def run_ffmpeg_multiple_files(self, input_paths, out_path, opts): self.check_version() oldest_mtime = min( os.stat(encodeFilename(path)).st_mtime for path in input_paths) files_cmd = [] for path in input_paths: files_cmd.extend([encodeArgument('-i'), encodeFilename(path, True)]) cmd = ([encodeFilename(self.executable, True), encodeArgument('-y')] + files_cmd + [encodeArgument(o) for o in opts] + [encodeFilename(self._ffmpeg_filename_argument(out_path), True)]) if self._downloader.params.get('verbose', False): self._downloader.to_screen('[debug] ffmpeg command line: %s' % shell_quote(cmd)) p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) stdout, stderr = p.communicate() if p.returncode != 0: stderr = stderr.decode('utf-8', 'replace') msg = stderr.strip().split('\n')[-1] raise FFmpegPostProcessorError(msg) self.try_utime(out_path, oldest_mtime, oldest_mtime) def run_ffmpeg(self, path, out_path, opts): self.run_ffmpeg_multiple_files([path], out_path, opts) def _ffmpeg_filename_argument(self, fn): # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details if fn.startswith('-'): return './' + fn return fn class FFmpegExtractAudioPP(FFmpegPostProcessor): def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False): FFmpegPostProcessor.__init__(self, downloader) if preferredcodec is None: preferredcodec = 'best' self._preferredcodec = preferredcodec self._preferredquality = preferredquality self._nopostoverwrites = nopostoverwrites def get_audio_codec(self, path): if not self.probe_available: raise PostProcessingError('ffprobe or avprobe not found. Please install one.') try: cmd = [ encodeFilename(self.probe_executable, True), encodeArgument('-show_streams'), encodeFilename(self._ffmpeg_filename_argument(path), True)] if self._downloader.params.get('verbose', False): self._downloader.to_screen('[debug] %s command line: %s' % (self.basename, shell_quote(cmd))) handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE, stdin=subprocess.PIPE) output = handle.communicate()[0] if handle.wait() != 0: return None except (IOError, OSError): return None audio_codec = None for line in output.decode('ascii', 'ignore').split('\n'): if line.startswith('codec_name='): audio_codec = line.split('=')[1].strip() elif line.strip() == 'codec_type=audio' and audio_codec is not None: return audio_codec return None def run_ffmpeg(self, path, out_path, codec, more_opts): if codec is None: acodec_opts = [] else: acodec_opts = ['-acodec', codec] opts = ['-vn'] + acodec_opts + more_opts try: FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts) except FFmpegPostProcessorError as err: raise AudioConversionError(err.msg) def run(self, information): path = information['filepath'] filecodec = self.get_audio_codec(path) if filecodec is None: raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe') more_opts = [] if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'): if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']: # Lossless, but in another container acodec = 'copy' extension = 'm4a' more_opts = ['-bsf:a', 'aac_adtstoasc'] elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']: # Lossless if possible acodec = 'copy' extension = filecodec if filecodec == 'aac': more_opts = ['-f', 'adts'] if filecodec == 'vorbis': extension = 'ogg' else: # MP3 otherwise. acodec = 'libmp3lame' extension = 'mp3' more_opts = [] if self._preferredquality is not None: if int(self._preferredquality) < 10: more_opts += ['-q:a', self._preferredquality] else: more_opts += ['-b:a', self._preferredquality + 'k'] else: # We convert the audio (lossy) acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec] extension = self._preferredcodec more_opts = [] if self._preferredquality is not None: # The opus codec doesn't support the -aq option if int(self._preferredquality) < 10 and extension != 'opus': more_opts += ['-q:a', self._preferredquality] else: more_opts += ['-b:a', self._preferredquality + 'k'] if self._preferredcodec == 'aac': more_opts += ['-f', 'adts'] if self._preferredcodec == 'm4a': more_opts += ['-bsf:a', 'aac_adtstoasc'] if self._preferredcodec == 'vorbis': extension = 'ogg' if self._preferredcodec == 'wav': extension = 'wav' more_opts += ['-f', 'wav'] prefix, sep, ext = path.rpartition('.') # not os.path.splitext, since the latter does not work on unicode in all setups new_path = prefix + sep + extension # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly. if (new_path == path or (self._nopostoverwrites and os.path.exists(encodeFilename(new_path)))): self._downloader.to_screen('[youtube] Post-process file %s exists, skipping' % new_path) return [], information try: self._downloader.to_screen('[' + self.basename + '] Destination: ' + new_path) self.run_ffmpeg(path, new_path, acodec, more_opts) except AudioConversionError as e: raise PostProcessingError( 'audio conversion failed: ' + e.msg) except Exception: raise PostProcessingError('error running ' + self.basename) # Try to update the date time for extracted audio file. if information.get('filetime') is not None: self.try_utime( new_path, time.time(), information['filetime'], errnote='Cannot update utime of audio file') information['filepath'] = new_path information['ext'] = extension return [path], information class FFmpegVideoConvertorPP(FFmpegPostProcessor): def __init__(self, downloader=None, preferedformat=None, extra_cmd_args=None): super(FFmpegVideoConvertorPP, self).__init__(downloader, extra_cmd_args) self._preferedformat = preferedformat def run(self, information): path = information['filepath'] prefix, sep, ext = path.rpartition('.') ext = self._preferedformat options = self._extra_cmd_args if self._preferedformat == 'xvid': ext = 'avi' options.extend(['-c:v', 'libxvid', '-vtag', 'XVID']) outpath = prefix + sep + ext if information['ext'] == self._preferedformat: self._downloader.to_screen('[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat)) return [], information self._downloader.to_screen('[' + 'ffmpeg' + '] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) + outpath) self.run_ffmpeg(path, outpath, options) information['filepath'] = outpath information['format'] = self._preferedformat information['ext'] = ext return [path], information class FFmpegEmbedSubtitlePP(FFmpegPostProcessor): # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt _lang_map = { 'aa': 'aar', 'ab': 'abk', 'ae': 'ave', 'af': 'afr', 'ak': 'aka', 'am': 'amh', 'an': 'arg', 'ar': 'ara', 'as': 'asm', 'av': 'ava', 'ay': 'aym', 'az': 'aze', 'ba': 'bak', 'be': 'bel', 'bg': 'bul', 'bh': 'bih', 'bi': 'bis', 'bm': 'bam', 'bn': 'ben', 'bo': 'bod', 'br': 'bre', 'bs': 'bos', 'ca': 'cat', 'ce': 'che', 'ch': 'cha', 'co': 'cos', 'cr': 'cre', 'cs': 'ces', 'cu': 'chu', 'cv': 'chv', 'cy': 'cym', 'da': 'dan', 'de': 'deu', 'dv': 'div', 'dz': 'dzo', 'ee': 'ewe', 'el': 'ell', 'en': 'eng', 'eo': 'epo', 'es': 'spa', 'et': 'est', 'eu': 'eus', 'fa': 'fas', 'ff': 'ful', 'fi': 'fin', 'fj': 'fij', 'fo': 'fao', 'fr': 'fra', 'fy': 'fry', 'ga': 'gle', 'gd': 'gla', 'gl': 'glg', 'gn': 'grn', 'gu': 'guj', 'gv': 'glv', 'ha': 'hau', 'he': 'heb', 'hi': 'hin', 'ho': 'hmo', 'hr': 'hrv', 'ht': 'hat', 'hu': 'hun', 'hy': 'hye', 'hz': 'her', 'ia': 'ina', 'id': 'ind', 'ie': 'ile', 'ig': 'ibo', 'ii': 'iii', 'ik': 'ipk', 'io': 'ido', 'is': 'isl', 'it': 'ita', 'iu': 'iku', 'ja': 'jpn', 'jv': 'jav', 'ka': 'kat', 'kg': 'kon', 'ki': 'kik', 'kj': 'kua', 'kk': 'kaz', 'kl': 'kal', 'km': 'khm', 'kn': 'kan', 'ko': 'kor', 'kr': 'kau', 'ks': 'kas', 'ku': 'kur', 'kv': 'kom', 'kw': 'cor', 'ky': 'kir', 'la': 'lat', 'lb': 'ltz', 'lg': 'lug', 'li': 'lim', 'ln': 'lin', 'lo': 'lao', 'lt': 'lit', 'lu': 'lub', 'lv': 'lav', 'mg': 'mlg', 'mh': 'mah', 'mi': 'mri', 'mk': 'mkd', 'ml': 'mal', 'mn': 'mon', 'mr': 'mar', 'ms': 'msa', 'mt': 'mlt', 'my': 'mya', 'na': 'nau', 'nb': 'nob', 'nd': 'nde', 'ne': 'nep', 'ng': 'ndo', 'nl': 'nld', 'nn': 'nno', 'no': 'nor', 'nr': 'nbl', 'nv': 'nav', 'ny': 'nya', 'oc': 'oci', 'oj': 'oji', 'om': 'orm', 'or': 'ori', 'os': 'oss', 'pa': 'pan', 'pi': 'pli', 'pl': 'pol', 'ps': 'pus', 'pt': 'por', 'qu': 'que', 'rm': 'roh', 'rn': 'run', 'ro': 'ron', 'ru': 'rus', 'rw': 'kin', 'sa': 'san', 'sc': 'srd', 'sd': 'snd', 'se': 'sme', 'sg': 'sag', 'si': 'sin', 'sk': 'slk', 'sl': 'slv', 'sm': 'smo', 'sn': 'sna', 'so': 'som', 'sq': 'sqi', 'sr': 'srp', 'ss': 'ssw', 'st': 'sot', 'su': 'sun', 'sv': 'swe', 'sw': 'swa', 'ta': 'tam', 'te': 'tel', 'tg': 'tgk', 'th': 'tha', 'ti': 'tir', 'tk': 'tuk', 'tl': 'tgl', 'tn': 'tsn', 'to': 'ton', 'tr': 'tur', 'ts': 'tso', 'tt': 'tat', 'tw': 'twi', 'ty': 'tah', 'ug': 'uig', 'uk': 'ukr', 'ur': 'urd', 'uz': 'uzb', 've': 'ven', 'vi': 'vie', 'vo': 'vol', 'wa': 'wln', 'wo': 'wol', 'xh': 'xho', 'yi': 'yid', 'yo': 'yor', 'za': 'zha', 'zh': 'zho', 'zu': 'zul', } @classmethod def _conver_lang_code(cls, code): """Convert language code from ISO 639-1 to ISO 639-2/T""" return cls._lang_map.get(code[:2]) def run(self, information): if information['ext'] not in ['mp4', 'mkv']: self._downloader.to_screen('[ffmpeg] Subtitles can only be embedded in mp4 or mkv files') return [], information subtitles = information.get('requested_subtitles') if not subtitles: self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to embed') return [], information sub_langs = list(subtitles.keys()) filename = information['filepath'] sub_filenames = [subtitles_filename(filename, lang, sub_info['ext']) for lang, sub_info in subtitles.items()] input_files = [filename] + sub_filenames opts = [ '-map', '0', '-c', 'copy', # Don't copy the existing subtitles, we may be running the # postprocessor a second time '-map', '-0:s', ] if information['ext'] == 'mp4': opts += ['-c:s', 'mov_text'] for (i, lang) in enumerate(sub_langs): opts.extend(['-map', '%d:0' % (i + 1)]) lang_code = self._conver_lang_code(lang) if lang_code is not None: opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code]) temp_filename = prepend_extension(filename, 'temp') self._downloader.to_screen('[ffmpeg] Embedding subtitles in \'%s\'' % filename) self.run_ffmpeg_multiple_files(input_files, temp_filename, opts) os.remove(encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename)) return sub_filenames, information class FFmpegMetadataPP(FFmpegPostProcessor): def run(self, info): metadata = {} if info.get('title') is not None: metadata['title'] = info['title'] if info.get('upload_date') is not None: metadata['date'] = info['upload_date'] if info.get('artist') is not None: metadata['artist'] = info['artist'] elif info.get('uploader') is not None: metadata['artist'] = info['uploader'] elif info.get('uploader_id') is not None: metadata['artist'] = info['uploader_id'] if info.get('description') is not None: metadata['description'] = info['description'] metadata['comment'] = info['description'] if info.get('webpage_url') is not None: metadata['purl'] = info['webpage_url'] if info.get('album') is not None: metadata['album'] = info['album'] if not metadata: self._downloader.to_screen('[ffmpeg] There isn\'t any metadata to add') return [], info filename = info['filepath'] temp_filename = prepend_extension(filename, 'temp') if info['ext'] == 'm4a': options = ['-vn', '-acodec', 'copy'] else: options = ['-c', 'copy'] for (name, value) in metadata.items(): options.extend(['-metadata', '%s=%s' % (name, value)]) self._downloader.to_screen('[ffmpeg] Adding metadata to \'%s\'' % filename) self.run_ffmpeg(filename, temp_filename, options) os.remove(encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename)) return [], info class FFmpegMergerPP(FFmpegPostProcessor): def run(self, info): filename = info['filepath'] temp_filename = prepend_extension(filename, 'temp') args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0'] self._downloader.to_screen('[ffmpeg] Merging formats into "%s"' % filename) self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args) os.rename(encodeFilename(temp_filename), encodeFilename(filename)) return info['__files_to_merge'], info def can_merge(self): # TODO: figure out merge-capable ffmpeg version if self.basename != 'avconv': return True required_version = '10-0' if is_outdated_version( self._versions[self.basename], required_version): warning = ('Your copy of %s is outdated and unable to properly mux separate video and audio files, ' 'youtube-dl will download single file media. ' 'Update %s to version %s or newer to fix this.') % ( self.basename, self.basename, required_version) if self._downloader: self._downloader.report_warning(warning) return False return True class FFmpegFixupStretchedPP(FFmpegPostProcessor): def run(self, info): stretched_ratio = info.get('stretched_ratio') if stretched_ratio is None or stretched_ratio == 1: return [], info filename = info['filepath'] temp_filename = prepend_extension(filename, 'temp') options = ['-c', 'copy', '-aspect', '%f' % stretched_ratio] self._downloader.to_screen('[ffmpeg] Fixing aspect ratio in "%s"' % filename) self.run_ffmpeg(filename, temp_filename, options) os.remove(encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename)) return [], info class FFmpegFixupM4aPP(FFmpegPostProcessor): def run(self, info): if info.get('container') != 'm4a_dash': return [], info filename = info['filepath'] temp_filename = prepend_extension(filename, 'temp') options = ['-c', 'copy', '-f', 'mp4'] self._downloader.to_screen('[ffmpeg] Correcting container in "%s"' % filename) self.run_ffmpeg(filename, temp_filename, options) os.remove(encodeFilename(filename)) os.rename(encodeFilename(temp_filename), encodeFilename(filename)) return [], info class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor): def __init__(self, downloader=None, format=None): super(FFmpegSubtitlesConvertorPP, self).__init__(downloader) self.format = format def run(self, info): subs = info.get('requested_subtitles') filename = info['filepath'] new_ext = self.format new_format = new_ext if new_format == 'vtt': new_format = 'webvtt' if subs is None: self._downloader.to_screen('[ffmpeg] There aren\'t any subtitles to convert') return [], info self._downloader.to_screen('[ffmpeg] Converting subtitles') for lang, sub in subs.items(): ext = sub['ext'] if ext == new_ext: self._downloader.to_screen( '[ffmpeg] Subtitle file for %s is already in the requested' 'format' % new_ext) continue new_file = subtitles_filename(filename, lang, new_ext) if ext == 'dfxp' or ext == 'ttml': self._downloader.report_warning( 'You have requested to convert dfxp (TTML) subtitles into another format, ' 'which results in style information loss') dfxp_file = subtitles_filename(filename, lang, ext) srt_file = subtitles_filename(filename, lang, 'srt') with io.open(dfxp_file, 'rt', encoding='utf-8') as f: srt_data = dfxp2srt(f.read()) with io.open(srt_file, 'wt', encoding='utf-8') as f: f.write(srt_data) ext = 'srt' subs[lang] = { 'ext': 'srt', 'data': srt_data } if new_ext == 'srt': continue self.run_ffmpeg( subtitles_filename(filename, lang, ext), new_file, ['-f', new_format]) with io.open(new_file, 'rt', encoding='utf-8') as f: subs[lang] = { 'ext': ext, 'data': f.read(), } return [], info