7 from .common import AudioConversionError, PostProcessor
11 compat_subprocess_get_DEVNULL,
22 class FFmpegPostProcessorError(PostProcessingError):
25 class FFmpegPostProcessor(PostProcessor):
26 def __init__(self,downloader=None):
27 PostProcessor.__init__(self, downloader)
28 self._exes = self.detect_executables()
31 def detect_executables():
32 programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
33 return dict((program, check_executable(program, ['-version'])) for program in programs)
35 def _get_executable(self):
36 if self._downloader.params.get('prefer_ffmpeg', False):
37 return self._exes['ffmpeg'] or self._exes['avconv']
39 return self._exes['avconv'] or self._exes['ffmpeg']
41 def _uses_avconv(self):
42 return self._get_executable() == self._exes['avconv']
44 def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
45 if not self._get_executable():
46 raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
49 for path in input_paths:
50 files_cmd.extend(['-i', encodeFilename(path, True)])
51 cmd = ([self._get_executable(), '-y'] + files_cmd
52 + [encodeArgument(o) for o in opts] +
53 [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
55 if self._downloader.params.get('verbose', False):
56 self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
57 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
58 stdout, stderr = p.communicate()
60 stderr = stderr.decode('utf-8', 'replace')
61 msg = stderr.strip().split('\n')[-1]
62 raise FFmpegPostProcessorError(msg)
64 def run_ffmpeg(self, path, out_path, opts):
65 self.run_ffmpeg_multiple_files([path], out_path, opts)
67 def _ffmpeg_filename_argument(self, fn):
68 # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
69 if fn.startswith(u'-'):
74 class FFmpegExtractAudioPP(FFmpegPostProcessor):
75 def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
76 FFmpegPostProcessor.__init__(self, downloader)
77 if preferredcodec is None:
78 preferredcodec = 'best'
79 self._preferredcodec = preferredcodec
80 self._preferredquality = preferredquality
81 self._nopostoverwrites = nopostoverwrites
83 def get_audio_codec(self, path):
84 if not self._exes['ffprobe'] and not self._exes['avprobe']:
85 raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
88 self._exes['avprobe'] or self._exes['ffprobe'],
90 encodeFilename(self._ffmpeg_filename_argument(path), True)]
91 handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
92 output = handle.communicate()[0]
93 if handle.wait() != 0:
95 except (IOError, OSError):
98 for line in output.decode('ascii', 'ignore').split('\n'):
99 if line.startswith('codec_name='):
100 audio_codec = line.split('=')[1].strip()
101 elif line.strip() == 'codec_type=audio' and audio_codec is not None:
105 def run_ffmpeg(self, path, out_path, codec, more_opts):
109 acodec_opts = ['-acodec', codec]
110 opts = ['-vn'] + acodec_opts + more_opts
112 FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
113 except FFmpegPostProcessorError as err:
114 raise AudioConversionError(err.msg)
116 def run(self, information):
117 path = information['filepath']
119 filecodec = self.get_audio_codec(path)
120 if filecodec is None:
121 raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
123 uses_avconv = self._uses_avconv()
125 if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
126 if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
127 # Lossless, but in another container
130 more_opts = ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
131 elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
132 # Lossless if possible
134 extension = filecodec
135 if filecodec == 'aac':
136 more_opts = ['-f', 'adts']
137 if filecodec == 'vorbis':
141 acodec = 'libmp3lame'
144 if self._preferredquality is not None:
145 if int(self._preferredquality) < 10:
146 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
148 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
150 # We convert the audio (lossy)
151 acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
152 extension = self._preferredcodec
154 if self._preferredquality is not None:
155 # The opus codec doesn't support the -aq option
156 if int(self._preferredquality) < 10 and extension != 'opus':
157 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
159 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
160 if self._preferredcodec == 'aac':
161 more_opts += ['-f', 'adts']
162 if self._preferredcodec == 'm4a':
163 more_opts += ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
164 if self._preferredcodec == 'vorbis':
166 if self._preferredcodec == 'wav':
168 more_opts += ['-f', 'wav']
170 prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
171 new_path = prefix + sep + extension
173 # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
175 self._nopostoverwrites = True
178 if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
179 self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
181 self._downloader.to_screen(u'[' + self._get_executable() + '] Destination: ' + new_path)
182 self.run_ffmpeg(path, new_path, acodec, more_opts)
184 etype,e,tb = sys.exc_info()
185 if isinstance(e, AudioConversionError):
186 msg = u'audio conversion failed: ' + e.msg
188 msg = u'error running ' + self._get_executable()
189 raise PostProcessingError(msg)
191 # Try to update the date time for extracted audio file.
192 if information.get('filetime') is not None:
194 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
196 self._downloader.report_warning(u'Cannot update utime of audio file')
198 information['filepath'] = new_path
199 return self._nopostoverwrites,information
202 class FFmpegVideoConvertor(FFmpegPostProcessor):
203 def __init__(self, downloader=None,preferedformat=None):
204 super(FFmpegVideoConvertor, self).__init__(downloader)
205 self._preferedformat=preferedformat
207 def run(self, information):
208 path = information['filepath']
209 prefix, sep, ext = path.rpartition(u'.')
210 outpath = prefix + sep + self._preferedformat
211 if information['ext'] == self._preferedformat:
212 self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
213 return True,information
214 self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
215 self.run_ffmpeg(path, outpath, [])
216 information['filepath'] = outpath
217 information['format'] = self._preferedformat
218 information['ext'] = self._preferedformat
219 return False,information
222 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
223 # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
411 def __init__(self, downloader=None, subtitlesformat='srt'):
412 super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
413 self._subformat = subtitlesformat
416 def _conver_lang_code(cls, code):
417 """Convert language code from ISO 639-1 to ISO 639-2/T"""
418 return cls._lang_map.get(code[:2])
420 def run(self, information):
421 if information['ext'] != u'mp4':
422 self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files')
423 return True, information
424 if not information.get('subtitles'):
425 self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed')
426 return True, information
428 sub_langs = [key for key in information['subtitles']]
429 filename = information['filepath']
430 input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
432 opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
433 for (i, lang) in enumerate(sub_langs):
434 opts.extend(['-map', '%d:0' % (i+1), '-c:s:%d' % i, 'mov_text'])
435 lang_code = self._conver_lang_code(lang)
436 if lang_code is not None:
437 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
438 opts.extend(['-f', 'mp4'])
440 temp_filename = filename + u'.temp'
441 self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename)
442 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
443 os.remove(encodeFilename(filename))
444 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
446 return True, information
449 class FFmpegMetadataPP(FFmpegPostProcessor):
452 if info.get('title') is not None:
453 metadata['title'] = info['title']
454 if info.get('upload_date') is not None:
455 metadata['date'] = info['upload_date']
456 if info.get('uploader') is not None:
457 metadata['artist'] = info['uploader']
458 elif info.get('uploader_id') is not None:
459 metadata['artist'] = info['uploader_id']
462 self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add')
465 filename = info['filepath']
466 temp_filename = prepend_extension(filename, 'temp')
468 if info['ext'] == u'm4a':
469 options = ['-vn', '-acodec', 'copy']
471 options = ['-c', 'copy']
473 for (name, value) in metadata.items():
474 options.extend(['-metadata', '%s=%s' % (name, value)])
476 self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename)
477 self.run_ffmpeg(filename, temp_filename, options)
478 os.remove(encodeFilename(filename))
479 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
483 class FFmpegMergerPP(FFmpegPostProcessor):
485 filename = info['filepath']
486 args = ['-c', 'copy']
487 self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename)
488 self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
492 class FFmpegAudioFixPP(FFmpegPostProcessor):
494 filename = info['filepath']
495 temp_filename = prepend_extension(filename, 'temp')
497 options = ['-vn', '-acodec', 'copy']
498 self._downloader.to_screen(u'[ffmpeg] Fixing audio file "%s"' % filename)
499 self.run_ffmpeg(filename, temp_filename, options)
501 os.remove(encodeFilename(filename))
502 os.rename(encodeFilename(temp_filename), encodeFilename(filename))