7 from .common import AudioConversionError, PostProcessor
11 compat_subprocess_get_DEVNULL,
21 class FFmpegPostProcessorError(PostProcessingError):
24 class FFmpegPostProcessor(PostProcessor):
25 def __init__(self,downloader=None):
26 PostProcessor.__init__(self, downloader)
27 self._exes = self.detect_executables()
30 def detect_executables():
31 programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
32 return dict((program, check_executable(program, ['-version'])) for program in programs)
34 def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
35 if not self._exes['ffmpeg'] and not self._exes['avconv']:
36 raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
39 for path in input_paths:
40 files_cmd.extend(['-i', encodeFilename(path, True)])
41 cmd = ([self._exes['avconv'] or self._exes['ffmpeg'], '-y'] + files_cmd
43 [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
45 if self._downloader.params.get('verbose', False):
46 self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
47 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
48 stdout,stderr = p.communicate()
50 stderr = stderr.decode('utf-8', 'replace')
51 msg = stderr.strip().split('\n')[-1]
52 raise FFmpegPostProcessorError(msg)
54 def run_ffmpeg(self, path, out_path, opts):
55 self.run_ffmpeg_multiple_files([path], out_path, opts)
57 def _ffmpeg_filename_argument(self, fn):
58 # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
59 if fn.startswith(u'-'):
64 class FFmpegExtractAudioPP(FFmpegPostProcessor):
65 def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
66 FFmpegPostProcessor.__init__(self, downloader)
67 if preferredcodec is None:
68 preferredcodec = 'best'
69 self._preferredcodec = preferredcodec
70 self._preferredquality = preferredquality
71 self._nopostoverwrites = nopostoverwrites
73 def get_audio_codec(self, path):
74 if not self._exes['ffprobe'] and not self._exes['avprobe']:
75 raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
78 self._exes['avprobe'] or self._exes['ffprobe'],
80 encodeFilename(self._ffmpeg_filename_argument(path), True)]
81 handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
82 output = handle.communicate()[0]
83 if handle.wait() != 0:
85 except (IOError, OSError):
88 for line in output.decode('ascii', 'ignore').split('\n'):
89 if line.startswith('codec_name='):
90 audio_codec = line.split('=')[1].strip()
91 elif line.strip() == 'codec_type=audio' and audio_codec is not None:
95 def run_ffmpeg(self, path, out_path, codec, more_opts):
96 if not self._exes['ffmpeg'] and not self._exes['avconv']:
97 raise AudioConversionError('ffmpeg or avconv not found. Please install one.')
101 acodec_opts = ['-acodec', codec]
102 opts = ['-vn'] + acodec_opts + more_opts
104 FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
105 except FFmpegPostProcessorError as err:
106 raise AudioConversionError(err.msg)
108 def run(self, information):
109 path = information['filepath']
111 filecodec = self.get_audio_codec(path)
112 if filecodec is None:
113 raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
116 if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
117 if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
118 # Lossless, but in another container
121 more_opts = [self._exes['avconv'] and '-bsf:a' or '-absf', 'aac_adtstoasc']
122 elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
123 # Lossless if possible
125 extension = filecodec
126 if filecodec == 'aac':
127 more_opts = ['-f', 'adts']
128 if filecodec == 'vorbis':
132 acodec = 'libmp3lame'
135 if self._preferredquality is not None:
136 if int(self._preferredquality) < 10:
137 more_opts += [self._exes['avconv'] and '-q:a' or '-aq', self._preferredquality]
139 more_opts += [self._exes['avconv'] and '-b:a' or '-ab', self._preferredquality + 'k']
141 # We convert the audio (lossy)
142 acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
143 extension = self._preferredcodec
145 if self._preferredquality is not None:
146 # The opus codec doesn't support the -aq option
147 if int(self._preferredquality) < 10 and extension != 'opus':
148 more_opts += [self._exes['avconv'] and '-q:a' or '-aq', self._preferredquality]
150 more_opts += [self._exes['avconv'] and '-b:a' or '-ab', self._preferredquality + 'k']
151 if self._preferredcodec == 'aac':
152 more_opts += ['-f', 'adts']
153 if self._preferredcodec == 'm4a':
154 more_opts += [self._exes['avconv'] and '-bsf:a' or '-absf', 'aac_adtstoasc']
155 if self._preferredcodec == 'vorbis':
157 if self._preferredcodec == 'wav':
159 more_opts += ['-f', 'wav']
161 prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
162 new_path = prefix + sep + extension
164 # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
166 self._nopostoverwrites = True
169 if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
170 self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
172 self._downloader.to_screen(u'[' + (self._exes['avconv'] and 'avconv' or 'ffmpeg') + '] Destination: ' + new_path)
173 self.run_ffmpeg(path, new_path, acodec, more_opts)
175 etype,e,tb = sys.exc_info()
176 if isinstance(e, AudioConversionError):
177 msg = u'audio conversion failed: ' + e.msg
179 msg = u'error running ' + (self._exes['avconv'] and 'avconv' or 'ffmpeg')
180 raise PostProcessingError(msg)
182 # Try to update the date time for extracted audio file.
183 if information.get('filetime') is not None:
185 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
187 self._downloader.report_warning(u'Cannot update utime of audio file')
189 information['filepath'] = new_path
190 return self._nopostoverwrites,information
193 class FFmpegVideoConvertor(FFmpegPostProcessor):
194 def __init__(self, downloader=None,preferedformat=None):
195 super(FFmpegVideoConvertor, self).__init__(downloader)
196 self._preferedformat=preferedformat
198 def run(self, information):
199 path = information['filepath']
200 prefix, sep, ext = path.rpartition(u'.')
201 outpath = prefix + sep + self._preferedformat
202 if information['ext'] == self._preferedformat:
203 self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
204 return True,information
205 self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
206 self.run_ffmpeg(path, outpath, [])
207 information['filepath'] = outpath
208 information['format'] = self._preferedformat
209 information['ext'] = self._preferedformat
210 return False,information
213 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
214 # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
402 def __init__(self, downloader=None, subtitlesformat='srt'):
403 super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
404 self._subformat = subtitlesformat
407 def _conver_lang_code(cls, code):
408 """Convert language code from ISO 639-1 to ISO 639-2/T"""
409 return cls._lang_map.get(code[:2])
411 def run(self, information):
412 if information['ext'] != u'mp4':
413 self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files')
414 return True, information
415 if not information.get('subtitles'):
416 self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed')
417 return True, information
419 sub_langs = [key for key in information['subtitles']]
420 filename = information['filepath']
421 input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
423 opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
424 for (i, lang) in enumerate(sub_langs):
425 opts.extend(['-map', '%d:0' % (i+1), '-c:s:%d' % i, 'mov_text'])
426 lang_code = self._conver_lang_code(lang)
427 if lang_code is not None:
428 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
429 opts.extend(['-f', 'mp4'])
431 temp_filename = filename + u'.temp'
432 self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename)
433 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
434 os.remove(encodeFilename(filename))
435 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
437 return True, information
440 class FFmpegMetadataPP(FFmpegPostProcessor):
443 if info.get('title') is not None:
444 metadata['title'] = info['title']
445 if info.get('upload_date') is not None:
446 metadata['date'] = info['upload_date']
447 if info.get('uploader') is not None:
448 metadata['artist'] = info['uploader']
449 elif info.get('uploader_id') is not None:
450 metadata['artist'] = info['uploader_id']
453 self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add')
456 filename = info['filepath']
457 temp_filename = prepend_extension(filename, 'temp')
459 options = ['-c', 'copy']
460 for (name, value) in metadata.items():
461 options.extend(['-metadata', '%s=%s' % (name, value)])
463 self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename)
464 self.run_ffmpeg(filename, temp_filename, options)
465 os.remove(encodeFilename(filename))
466 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
470 class FFmpegMergerPP(FFmpegPostProcessor):
472 filename = info['filepath']
473 args = ['-c', 'copy']
474 self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)