8 from .common import AudioConversionError, PostProcessor
11 compat_subprocess_get_DEVNULL,
23 class FFmpegPostProcessorError(PostProcessingError):
27 class FFmpegPostProcessor(PostProcessor):
28 def __init__(self, downloader=None, deletetempfiles=False):
29 PostProcessor.__init__(self, downloader)
30 self._versions = self.get_versions()
31 self._deletetempfiles = deletetempfiles
33 def check_version(self):
34 if not self._executable:
35 raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
37 REQUIRED_VERSION = '1.0'
38 if is_outdated_version(
39 self._versions[self._executable], REQUIRED_VERSION):
40 warning = u'Your copy of %s is outdated, update %s to version %s or newer if you encounter any errors.' % (
41 self._executable, self._executable, REQUIRED_VERSION)
43 self._downloader.report_warning(warning)
47 programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
48 return dict((p, get_exe_version(p, args=['-version'])) for p in programs)
51 def _executable(self):
52 if self._downloader.params.get('prefer_ffmpeg', False):
53 prefs = ('ffmpeg', 'avconv')
55 prefs = ('avconv', 'ffmpeg')
62 def _probe_executable(self):
63 if self._downloader.params.get('prefer_ffmpeg', False):
64 prefs = ('ffprobe', 'avprobe')
66 prefs = ('avprobe', 'ffprobe')
72 def _uses_avconv(self):
73 return self._executable == 'avconv'
75 def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
79 for path in input_paths:
80 files_cmd.extend(['-i', encodeFilename(path, True)])
81 cmd = ([self._executable, '-y'] + files_cmd
82 + [encodeArgument(o) for o in opts] +
83 [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
85 if self._downloader.params.get('verbose', False):
86 self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
87 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
88 stdout, stderr = p.communicate()
90 stderr = stderr.decode('utf-8', 'replace')
91 msg = stderr.strip().split('\n')[-1]
92 raise FFmpegPostProcessorError(msg)
93 if self._deletetempfiles:
94 for ipath in input_paths:
97 def run_ffmpeg(self, path, out_path, opts):
98 self.run_ffmpeg_multiple_files([path], out_path, opts)
100 def _ffmpeg_filename_argument(self, fn):
101 # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
102 if fn.startswith(u'-'):
107 class FFmpegExtractAudioPP(FFmpegPostProcessor):
108 def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
109 FFmpegPostProcessor.__init__(self, downloader)
110 if preferredcodec is None:
111 preferredcodec = 'best'
112 self._preferredcodec = preferredcodec
113 self._preferredquality = preferredquality
114 self._nopostoverwrites = nopostoverwrites
116 def get_audio_codec(self, path):
118 if not self._probe_executable:
119 raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
122 self._probe_executable,
124 encodeFilename(self._ffmpeg_filename_argument(path), True)]
125 handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
126 output = handle.communicate()[0]
127 if handle.wait() != 0:
129 except (IOError, OSError):
132 for line in output.decode('ascii', 'ignore').split('\n'):
133 if line.startswith('codec_name='):
134 audio_codec = line.split('=')[1].strip()
135 elif line.strip() == 'codec_type=audio' and audio_codec is not None:
139 def run_ffmpeg(self, path, out_path, codec, more_opts):
143 acodec_opts = ['-acodec', codec]
144 opts = ['-vn'] + acodec_opts + more_opts
146 FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
147 except FFmpegPostProcessorError as err:
148 raise AudioConversionError(err.msg)
150 def run(self, information):
151 path = information['filepath']
153 filecodec = self.get_audio_codec(path)
154 if filecodec is None:
155 raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
157 uses_avconv = self._uses_avconv()
159 if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
160 if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
161 # Lossless, but in another container
164 more_opts = ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
165 elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
166 # Lossless if possible
168 extension = filecodec
169 if filecodec == 'aac':
170 more_opts = ['-f', 'adts']
171 if filecodec == 'vorbis':
175 acodec = 'libmp3lame'
178 if self._preferredquality is not None:
179 if int(self._preferredquality) < 10:
180 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
182 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
184 # We convert the audio (lossy)
185 acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
186 extension = self._preferredcodec
188 if self._preferredquality is not None:
189 # The opus codec doesn't support the -aq option
190 if int(self._preferredquality) < 10 and extension != 'opus':
191 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
193 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
194 if self._preferredcodec == 'aac':
195 more_opts += ['-f', 'adts']
196 if self._preferredcodec == 'm4a':
197 more_opts += ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
198 if self._preferredcodec == 'vorbis':
200 if self._preferredcodec == 'wav':
202 more_opts += ['-f', 'wav']
204 prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
205 new_path = prefix + sep + extension
207 # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
209 self._nopostoverwrites = True
212 if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
213 self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
215 self._downloader.to_screen(u'[' + self._executable + '] Destination: ' + new_path)
216 self.run_ffmpeg(path, new_path, acodec, more_opts)
218 etype,e,tb = sys.exc_info()
219 if isinstance(e, AudioConversionError):
220 msg = u'audio conversion failed: ' + e.msg
222 msg = u'error running ' + self._executable
223 raise PostProcessingError(msg)
225 # Try to update the date time for extracted audio file.
226 if information.get('filetime') is not None:
228 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
230 self._downloader.report_warning(u'Cannot update utime of audio file')
232 information['filepath'] = new_path
233 return self._nopostoverwrites,information
236 class FFmpegVideoConvertor(FFmpegPostProcessor):
237 def __init__(self, downloader=None,preferedformat=None):
238 super(FFmpegVideoConvertor, self).__init__(downloader)
239 self._preferedformat=preferedformat
241 def run(self, information):
242 path = information['filepath']
243 prefix, sep, ext = path.rpartition(u'.')
244 outpath = prefix + sep + self._preferedformat
245 if information['ext'] == self._preferedformat:
246 self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
247 return True,information
248 self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
249 self.run_ffmpeg(path, outpath, [])
250 information['filepath'] = outpath
251 information['format'] = self._preferedformat
252 information['ext'] = self._preferedformat
253 return False,information
256 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
257 # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
445 def __init__(self, downloader=None, subtitlesformat='srt'):
446 super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
447 self._subformat = subtitlesformat
450 def _conver_lang_code(cls, code):
451 """Convert language code from ISO 639-1 to ISO 639-2/T"""
452 return cls._lang_map.get(code[:2])
454 def run(self, information):
455 if information['ext'] != u'mp4':
456 self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files')
457 return True, information
458 if not information.get('subtitles'):
459 self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed')
460 return True, information
462 sub_langs = [key for key in information['subtitles']]
463 filename = information['filepath']
464 input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
466 opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
467 for (i, lang) in enumerate(sub_langs):
468 opts.extend(['-map', '%d:0' % (i+1), '-c:s:%d' % i, 'mov_text'])
469 lang_code = self._conver_lang_code(lang)
470 if lang_code is not None:
471 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
472 opts.extend(['-f', 'mp4'])
474 temp_filename = filename + u'.temp'
475 self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename)
476 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
477 os.remove(encodeFilename(filename))
478 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
480 return True, information
483 class FFmpegMetadataPP(FFmpegPostProcessor):
486 if info.get('title') is not None:
487 metadata['title'] = info['title']
488 if info.get('upload_date') is not None:
489 metadata['date'] = info['upload_date']
490 if info.get('uploader') is not None:
491 metadata['artist'] = info['uploader']
492 elif info.get('uploader_id') is not None:
493 metadata['artist'] = info['uploader_id']
496 self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add')
499 filename = info['filepath']
500 temp_filename = prepend_extension(filename, 'temp')
502 if info['ext'] == u'm4a':
503 options = ['-vn', '-acodec', 'copy']
505 options = ['-c', 'copy']
507 for (name, value) in metadata.items():
508 options.extend(['-metadata', '%s=%s' % (name, value)])
510 self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename)
511 self.run_ffmpeg(filename, temp_filename, options)
512 os.remove(encodeFilename(filename))
513 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
517 class FFmpegMergerPP(FFmpegPostProcessor):
519 filename = info['filepath']
520 args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest']
521 self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename)
522 self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
526 class FFmpegAudioFixPP(FFmpegPostProcessor):
528 filename = info['filepath']
529 temp_filename = prepend_extension(filename, 'temp')
531 options = ['-vn', '-acodec', 'copy']
532 self._downloader.to_screen(u'[ffmpeg] Fixing audio file "%s"' % filename)
533 self.run_ffmpeg(filename, temp_filename, options)
535 os.remove(encodeFilename(filename))
536 os.rename(encodeFilename(temp_filename), encodeFilename(filename))