8 from .common import AudioConversionError, PostProcessor
12 compat_subprocess_get_DEVNULL,
23 def get_version(executable):
24 """ Returns the version of the specified executable,
25 or False if the executable is not present """
27 out, err = subprocess.Popen(
28 [executable, '-version'],
29 stdout=subprocess.PIPE, stderr=subprocess.STDOUT).communicate()
32 firstline = out.partition(b'\n')[0].decode('ascii', 'ignore')
33 m = re.search(r'version\s+([0-9._-a-zA-Z]+)', firstline)
40 class FFmpegPostProcessorError(PostProcessingError):
44 class FFmpegPostProcessor(PostProcessor):
45 def __init__(self, downloader=None, deletetempfiles=False):
46 PostProcessor.__init__(self, downloader)
47 self._versions = self.get_versions()
48 self._deletetempfiles = deletetempfiles
50 def check_version(self):
51 if not self._executable:
52 raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
54 REQUIRED_VERSION = '1.0'
55 if is_outdated_version(
56 self._versions[self._executable], REQUIRED_VERSION):
57 warning = u'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
58 self._executable, self._executable, REQUIRED_VERSION)
60 self._downloader.report_warning(warning)
64 programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
65 return dict((program, get_version(program)) for program in programs)
68 def _executable(self):
69 if self._downloader.params.get('prefer_ffmpeg', False):
70 prefs = ('ffmpeg', 'avconv')
72 prefs = ('avconv', 'ffmpeg')
78 def _uses_avconv(self):
79 return self._executable == 'avconv'
81 def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
85 for path in input_paths:
86 files_cmd.extend(['-i', encodeFilename(path, True)])
87 cmd = ([self._executable, '-y'] + files_cmd
88 + [encodeArgument(o) for o in opts] +
89 [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
91 if self._downloader.params.get('verbose', False):
92 self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
93 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
94 stdout, stderr = p.communicate()
96 stderr = stderr.decode('utf-8', 'replace')
97 msg = stderr.strip().split('\n')[-1]
98 raise FFmpegPostProcessorError(msg)
99 if self._deletetempfiles:
100 for ipath in input_paths:
103 def run_ffmpeg(self, path, out_path, opts):
104 self.run_ffmpeg_multiple_files([path], out_path, opts)
106 def _ffmpeg_filename_argument(self, fn):
107 # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
108 if fn.startswith(u'-'):
113 class FFmpegExtractAudioPP(FFmpegPostProcessor):
114 def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
115 FFmpegPostProcessor.__init__(self, downloader)
116 if preferredcodec is None:
117 preferredcodec = 'best'
118 self._preferredcodec = preferredcodec
119 self._preferredquality = preferredquality
120 self._nopostoverwrites = nopostoverwrites
122 def get_audio_codec(self, path):
123 if not self._exes['ffprobe'] and not self._exes['avprobe']:
124 raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
127 self._exes['avprobe'] or self._exes['ffprobe'],
129 encodeFilename(self._ffmpeg_filename_argument(path), True)]
130 handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
131 output = handle.communicate()[0]
132 if handle.wait() != 0:
134 except (IOError, OSError):
137 for line in output.decode('ascii', 'ignore').split('\n'):
138 if line.startswith('codec_name='):
139 audio_codec = line.split('=')[1].strip()
140 elif line.strip() == 'codec_type=audio' and audio_codec is not None:
144 def run_ffmpeg(self, path, out_path, codec, more_opts):
148 acodec_opts = ['-acodec', codec]
149 opts = ['-vn'] + acodec_opts + more_opts
151 FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
152 except FFmpegPostProcessorError as err:
153 raise AudioConversionError(err.msg)
155 def run(self, information):
156 path = information['filepath']
158 filecodec = self.get_audio_codec(path)
159 if filecodec is None:
160 raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
162 uses_avconv = self._uses_avconv()
164 if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
165 if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
166 # Lossless, but in another container
169 more_opts = ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
170 elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
171 # Lossless if possible
173 extension = filecodec
174 if filecodec == 'aac':
175 more_opts = ['-f', 'adts']
176 if filecodec == 'vorbis':
180 acodec = 'libmp3lame'
183 if self._preferredquality is not None:
184 if int(self._preferredquality) < 10:
185 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
187 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
189 # We convert the audio (lossy)
190 acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
191 extension = self._preferredcodec
193 if self._preferredquality is not None:
194 # The opus codec doesn't support the -aq option
195 if int(self._preferredquality) < 10 and extension != 'opus':
196 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
198 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
199 if self._preferredcodec == 'aac':
200 more_opts += ['-f', 'adts']
201 if self._preferredcodec == 'm4a':
202 more_opts += ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
203 if self._preferredcodec == 'vorbis':
205 if self._preferredcodec == 'wav':
207 more_opts += ['-f', 'wav']
209 prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
210 new_path = prefix + sep + extension
212 # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
214 self._nopostoverwrites = True
217 if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
218 self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
220 self._downloader.to_screen(u'[' + self._executable + '] Destination: ' + new_path)
221 self.run_ffmpeg(path, new_path, acodec, more_opts)
223 etype,e,tb = sys.exc_info()
224 if isinstance(e, AudioConversionError):
225 msg = u'audio conversion failed: ' + e.msg
227 msg = u'error running ' + self._executable
228 raise PostProcessingError(msg)
230 # Try to update the date time for extracted audio file.
231 if information.get('filetime') is not None:
233 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
235 self._downloader.report_warning(u'Cannot update utime of audio file')
237 information['filepath'] = new_path
238 return self._nopostoverwrites,information
241 class FFmpegVideoConvertor(FFmpegPostProcessor):
242 def __init__(self, downloader=None,preferedformat=None):
243 super(FFmpegVideoConvertor, self).__init__(downloader)
244 self._preferedformat=preferedformat
246 def run(self, information):
247 path = information['filepath']
248 prefix, sep, ext = path.rpartition(u'.')
249 outpath = prefix + sep + self._preferedformat
250 if information['ext'] == self._preferedformat:
251 self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
252 return True,information
253 self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
254 self.run_ffmpeg(path, outpath, [])
255 information['filepath'] = outpath
256 information['format'] = self._preferedformat
257 information['ext'] = self._preferedformat
258 return False,information
261 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
262 # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
450 def __init__(self, downloader=None, subtitlesformat='srt'):
451 super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
452 self._subformat = subtitlesformat
455 def _conver_lang_code(cls, code):
456 """Convert language code from ISO 639-1 to ISO 639-2/T"""
457 return cls._lang_map.get(code[:2])
459 def run(self, information):
460 if information['ext'] != u'mp4':
461 self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files')
462 return True, information
463 if not information.get('subtitles'):
464 self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed')
465 return True, information
467 sub_langs = [key for key in information['subtitles']]
468 filename = information['filepath']
469 input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
471 opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
472 for (i, lang) in enumerate(sub_langs):
473 opts.extend(['-map', '%d:0' % (i+1), '-c:s:%d' % i, 'mov_text'])
474 lang_code = self._conver_lang_code(lang)
475 if lang_code is not None:
476 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
477 opts.extend(['-f', 'mp4'])
479 temp_filename = filename + u'.temp'
480 self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename)
481 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
482 os.remove(encodeFilename(filename))
483 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
485 return True, information
488 class FFmpegMetadataPP(FFmpegPostProcessor):
491 if info.get('title') is not None:
492 metadata['title'] = info['title']
493 if info.get('upload_date') is not None:
494 metadata['date'] = info['upload_date']
495 if info.get('uploader') is not None:
496 metadata['artist'] = info['uploader']
497 elif info.get('uploader_id') is not None:
498 metadata['artist'] = info['uploader_id']
501 self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add')
504 filename = info['filepath']
505 temp_filename = prepend_extension(filename, 'temp')
507 if info['ext'] == u'm4a':
508 options = ['-vn', '-acodec', 'copy']
510 options = ['-c', 'copy']
512 for (name, value) in metadata.items():
513 options.extend(['-metadata', '%s=%s' % (name, value)])
515 self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename)
516 self.run_ffmpeg(filename, temp_filename, options)
517 os.remove(encodeFilename(filename))
518 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
522 class FFmpegMergerPP(FFmpegPostProcessor):
524 filename = info['filepath']
525 args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest']
526 self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename)
527 self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
531 class FFmpegAudioFixPP(FFmpegPostProcessor):
533 filename = info['filepath']
534 temp_filename = prepend_extension(filename, 'temp')
536 options = ['-vn', '-acodec', 'copy']
537 self._downloader.to_screen(u'[ffmpeg] Fixing audio file "%s"' % filename)
538 self.run_ffmpeg(filename, temp_filename, options)
540 os.remove(encodeFilename(filename))
541 os.rename(encodeFilename(temp_filename), encodeFilename(filename))