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[youtubedl] / youtube_dl / postprocessor / ffmpeg.py
1 import os
2 import subprocess
3 import sys
4 import time
5
6
7 from .common import AudioConversionError, PostProcessor
8
9 from ..utils import (
10 check_executable,
11 compat_subprocess_get_DEVNULL,
12 encodeFilename,
13 PostProcessingError,
14 prepend_extension,
15 shell_quote,
16 subtitles_filename,
17 )
18
19
20
21 class FFmpegPostProcessorError(PostProcessingError):
22 pass
23
24 class FFmpegPostProcessor(PostProcessor):
25 def __init__(self,downloader=None):
26 PostProcessor.__init__(self, downloader)
27 self._exes = self.detect_executables()
28
29 @staticmethod
30 def detect_executables():
31 programs = ['avprobe', 'avconv', 'ffmpeg', 'ffprobe']
32 return dict((program, check_executable(program, ['-version'])) for program in programs)
33
34 def _get_executable(self):
35 if self._downloader.params.get('prefer_ffmpeg', False):
36 return self._exes['ffmpeg'] or self._exes['avconv']
37 else:
38 return self._exes['avconv'] or self._exes['ffmpeg']
39
40 def _uses_avconv(self):
41 return self._get_executable() == self._exes['avconv']
42
43 def run_ffmpeg_multiple_files(self, input_paths, out_path, opts):
44 if not self._get_executable():
45 raise FFmpegPostProcessorError(u'ffmpeg or avconv not found. Please install one.')
46
47 files_cmd = []
48 for path in input_paths:
49 files_cmd.extend(['-i', encodeFilename(path, True)])
50 cmd = ([self._get_executable(), '-y'] + files_cmd
51 + opts +
52 [encodeFilename(self._ffmpeg_filename_argument(out_path), True)])
53
54 if self._downloader.params.get('verbose', False):
55 self._downloader.to_screen(u'[debug] ffmpeg command line: %s' % shell_quote(cmd))
56 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
57 stdout,stderr = p.communicate()
58 if p.returncode != 0:
59 stderr = stderr.decode('utf-8', 'replace')
60 msg = stderr.strip().split('\n')[-1]
61 raise FFmpegPostProcessorError(msg)
62
63 def run_ffmpeg(self, path, out_path, opts):
64 self.run_ffmpeg_multiple_files([path], out_path, opts)
65
66 def _ffmpeg_filename_argument(self, fn):
67 # ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
68 if fn.startswith(u'-'):
69 return u'./' + fn
70 return fn
71
72
73 class FFmpegExtractAudioPP(FFmpegPostProcessor):
74 def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False):
75 FFmpegPostProcessor.__init__(self, downloader)
76 if preferredcodec is None:
77 preferredcodec = 'best'
78 self._preferredcodec = preferredcodec
79 self._preferredquality = preferredquality
80 self._nopostoverwrites = nopostoverwrites
81
82 def get_audio_codec(self, path):
83 if not self._exes['ffprobe'] and not self._exes['avprobe']:
84 raise PostProcessingError(u'ffprobe or avprobe not found. Please install one.')
85 try:
86 cmd = [
87 self._exes['avprobe'] or self._exes['ffprobe'],
88 '-show_streams',
89 encodeFilename(self._ffmpeg_filename_argument(path), True)]
90 handle = subprocess.Popen(cmd, stderr=compat_subprocess_get_DEVNULL(), stdout=subprocess.PIPE)
91 output = handle.communicate()[0]
92 if handle.wait() != 0:
93 return None
94 except (IOError, OSError):
95 return None
96 audio_codec = None
97 for line in output.decode('ascii', 'ignore').split('\n'):
98 if line.startswith('codec_name='):
99 audio_codec = line.split('=')[1].strip()
100 elif line.strip() == 'codec_type=audio' and audio_codec is not None:
101 return audio_codec
102 return None
103
104 def run_ffmpeg(self, path, out_path, codec, more_opts):
105 if codec is None:
106 acodec_opts = []
107 else:
108 acodec_opts = ['-acodec', codec]
109 opts = ['-vn'] + acodec_opts + more_opts
110 try:
111 FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts)
112 except FFmpegPostProcessorError as err:
113 raise AudioConversionError(err.msg)
114
115 def run(self, information):
116 path = information['filepath']
117
118 filecodec = self.get_audio_codec(path)
119 if filecodec is None:
120 raise PostProcessingError(u'WARNING: unable to obtain file audio codec with ffprobe')
121
122 uses_avconv = self._uses_avconv()
123 more_opts = []
124 if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
125 if filecodec == 'aac' and self._preferredcodec in ['m4a', 'best']:
126 # Lossless, but in another container
127 acodec = 'copy'
128 extension = 'm4a'
129 more_opts = ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
130 elif filecodec in ['aac', 'mp3', 'vorbis', 'opus']:
131 # Lossless if possible
132 acodec = 'copy'
133 extension = filecodec
134 if filecodec == 'aac':
135 more_opts = ['-f', 'adts']
136 if filecodec == 'vorbis':
137 extension = 'ogg'
138 else:
139 # MP3 otherwise.
140 acodec = 'libmp3lame'
141 extension = 'mp3'
142 more_opts = []
143 if self._preferredquality is not None:
144 if int(self._preferredquality) < 10:
145 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
146 else:
147 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
148 else:
149 # We convert the audio (lossy)
150 acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'opus': 'opus', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
151 extension = self._preferredcodec
152 more_opts = []
153 if self._preferredquality is not None:
154 # The opus codec doesn't support the -aq option
155 if int(self._preferredquality) < 10 and extension != 'opus':
156 more_opts += ['-q:a' if uses_avconv else '-aq', self._preferredquality]
157 else:
158 more_opts += ['-b:a' if uses_avconv else '-ab', self._preferredquality + 'k']
159 if self._preferredcodec == 'aac':
160 more_opts += ['-f', 'adts']
161 if self._preferredcodec == 'm4a':
162 more_opts += ['-bsf:a' if uses_avconv else '-absf', 'aac_adtstoasc']
163 if self._preferredcodec == 'vorbis':
164 extension = 'ogg'
165 if self._preferredcodec == 'wav':
166 extension = 'wav'
167 more_opts += ['-f', 'wav']
168
169 prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
170 new_path = prefix + sep + extension
171
172 # If we download foo.mp3 and convert it to... foo.mp3, then don't delete foo.mp3, silly.
173 if new_path == path:
174 self._nopostoverwrites = True
175
176 try:
177 if self._nopostoverwrites and os.path.exists(encodeFilename(new_path)):
178 self._downloader.to_screen(u'[youtube] Post-process file %s exists, skipping' % new_path)
179 else:
180 self._downloader.to_screen(u'[' + self._get_executable() + '] Destination: ' + new_path)
181 self.run_ffmpeg(path, new_path, acodec, more_opts)
182 except:
183 etype,e,tb = sys.exc_info()
184 if isinstance(e, AudioConversionError):
185 msg = u'audio conversion failed: ' + e.msg
186 else:
187 msg = u'error running ' + self._get_executable()
188 raise PostProcessingError(msg)
189
190 # Try to update the date time for extracted audio file.
191 if information.get('filetime') is not None:
192 try:
193 os.utime(encodeFilename(new_path), (time.time(), information['filetime']))
194 except:
195 self._downloader.report_warning(u'Cannot update utime of audio file')
196
197 information['filepath'] = new_path
198 return self._nopostoverwrites,information
199
200
201 class FFmpegVideoConvertor(FFmpegPostProcessor):
202 def __init__(self, downloader=None,preferedformat=None):
203 super(FFmpegVideoConvertor, self).__init__(downloader)
204 self._preferedformat=preferedformat
205
206 def run(self, information):
207 path = information['filepath']
208 prefix, sep, ext = path.rpartition(u'.')
209 outpath = prefix + sep + self._preferedformat
210 if information['ext'] == self._preferedformat:
211 self._downloader.to_screen(u'[ffmpeg] Not converting video file %s - already is in target format %s' % (path, self._preferedformat))
212 return True,information
213 self._downloader.to_screen(u'['+'ffmpeg'+'] Converting video from %s to %s, Destination: ' % (information['ext'], self._preferedformat) +outpath)
214 self.run_ffmpeg(path, outpath, [])
215 information['filepath'] = outpath
216 information['format'] = self._preferedformat
217 information['ext'] = self._preferedformat
218 return False,information
219
220
221 class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
222 # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
223 _lang_map = {
224 'aa': 'aar',
225 'ab': 'abk',
226 'ae': 'ave',
227 'af': 'afr',
228 'ak': 'aka',
229 'am': 'amh',
230 'an': 'arg',
231 'ar': 'ara',
232 'as': 'asm',
233 'av': 'ava',
234 'ay': 'aym',
235 'az': 'aze',
236 'ba': 'bak',
237 'be': 'bel',
238 'bg': 'bul',
239 'bh': 'bih',
240 'bi': 'bis',
241 'bm': 'bam',
242 'bn': 'ben',
243 'bo': 'bod',
244 'br': 'bre',
245 'bs': 'bos',
246 'ca': 'cat',
247 'ce': 'che',
248 'ch': 'cha',
249 'co': 'cos',
250 'cr': 'cre',
251 'cs': 'ces',
252 'cu': 'chu',
253 'cv': 'chv',
254 'cy': 'cym',
255 'da': 'dan',
256 'de': 'deu',
257 'dv': 'div',
258 'dz': 'dzo',
259 'ee': 'ewe',
260 'el': 'ell',
261 'en': 'eng',
262 'eo': 'epo',
263 'es': 'spa',
264 'et': 'est',
265 'eu': 'eus',
266 'fa': 'fas',
267 'ff': 'ful',
268 'fi': 'fin',
269 'fj': 'fij',
270 'fo': 'fao',
271 'fr': 'fra',
272 'fy': 'fry',
273 'ga': 'gle',
274 'gd': 'gla',
275 'gl': 'glg',
276 'gn': 'grn',
277 'gu': 'guj',
278 'gv': 'glv',
279 'ha': 'hau',
280 'he': 'heb',
281 'hi': 'hin',
282 'ho': 'hmo',
283 'hr': 'hrv',
284 'ht': 'hat',
285 'hu': 'hun',
286 'hy': 'hye',
287 'hz': 'her',
288 'ia': 'ina',
289 'id': 'ind',
290 'ie': 'ile',
291 'ig': 'ibo',
292 'ii': 'iii',
293 'ik': 'ipk',
294 'io': 'ido',
295 'is': 'isl',
296 'it': 'ita',
297 'iu': 'iku',
298 'ja': 'jpn',
299 'jv': 'jav',
300 'ka': 'kat',
301 'kg': 'kon',
302 'ki': 'kik',
303 'kj': 'kua',
304 'kk': 'kaz',
305 'kl': 'kal',
306 'km': 'khm',
307 'kn': 'kan',
308 'ko': 'kor',
309 'kr': 'kau',
310 'ks': 'kas',
311 'ku': 'kur',
312 'kv': 'kom',
313 'kw': 'cor',
314 'ky': 'kir',
315 'la': 'lat',
316 'lb': 'ltz',
317 'lg': 'lug',
318 'li': 'lim',
319 'ln': 'lin',
320 'lo': 'lao',
321 'lt': 'lit',
322 'lu': 'lub',
323 'lv': 'lav',
324 'mg': 'mlg',
325 'mh': 'mah',
326 'mi': 'mri',
327 'mk': 'mkd',
328 'ml': 'mal',
329 'mn': 'mon',
330 'mr': 'mar',
331 'ms': 'msa',
332 'mt': 'mlt',
333 'my': 'mya',
334 'na': 'nau',
335 'nb': 'nob',
336 'nd': 'nde',
337 'ne': 'nep',
338 'ng': 'ndo',
339 'nl': 'nld',
340 'nn': 'nno',
341 'no': 'nor',
342 'nr': 'nbl',
343 'nv': 'nav',
344 'ny': 'nya',
345 'oc': 'oci',
346 'oj': 'oji',
347 'om': 'orm',
348 'or': 'ori',
349 'os': 'oss',
350 'pa': 'pan',
351 'pi': 'pli',
352 'pl': 'pol',
353 'ps': 'pus',
354 'pt': 'por',
355 'qu': 'que',
356 'rm': 'roh',
357 'rn': 'run',
358 'ro': 'ron',
359 'ru': 'rus',
360 'rw': 'kin',
361 'sa': 'san',
362 'sc': 'srd',
363 'sd': 'snd',
364 'se': 'sme',
365 'sg': 'sag',
366 'si': 'sin',
367 'sk': 'slk',
368 'sl': 'slv',
369 'sm': 'smo',
370 'sn': 'sna',
371 'so': 'som',
372 'sq': 'sqi',
373 'sr': 'srp',
374 'ss': 'ssw',
375 'st': 'sot',
376 'su': 'sun',
377 'sv': 'swe',
378 'sw': 'swa',
379 'ta': 'tam',
380 'te': 'tel',
381 'tg': 'tgk',
382 'th': 'tha',
383 'ti': 'tir',
384 'tk': 'tuk',
385 'tl': 'tgl',
386 'tn': 'tsn',
387 'to': 'ton',
388 'tr': 'tur',
389 'ts': 'tso',
390 'tt': 'tat',
391 'tw': 'twi',
392 'ty': 'tah',
393 'ug': 'uig',
394 'uk': 'ukr',
395 'ur': 'urd',
396 'uz': 'uzb',
397 've': 'ven',
398 'vi': 'vie',
399 'vo': 'vol',
400 'wa': 'wln',
401 'wo': 'wol',
402 'xh': 'xho',
403 'yi': 'yid',
404 'yo': 'yor',
405 'za': 'zha',
406 'zh': 'zho',
407 'zu': 'zul',
408 }
409
410 def __init__(self, downloader=None, subtitlesformat='srt'):
411 super(FFmpegEmbedSubtitlePP, self).__init__(downloader)
412 self._subformat = subtitlesformat
413
414 @classmethod
415 def _conver_lang_code(cls, code):
416 """Convert language code from ISO 639-1 to ISO 639-2/T"""
417 return cls._lang_map.get(code[:2])
418
419 def run(self, information):
420 if information['ext'] != u'mp4':
421 self._downloader.to_screen(u'[ffmpeg] Subtitles can only be embedded in mp4 files')
422 return True, information
423 if not information.get('subtitles'):
424 self._downloader.to_screen(u'[ffmpeg] There aren\'t any subtitles to embed')
425 return True, information
426
427 sub_langs = [key for key in information['subtitles']]
428 filename = information['filepath']
429 input_files = [filename] + [subtitles_filename(filename, lang, self._subformat) for lang in sub_langs]
430
431 opts = ['-map', '0:0', '-map', '0:1', '-c:v', 'copy', '-c:a', 'copy']
432 for (i, lang) in enumerate(sub_langs):
433 opts.extend(['-map', '%d:0' % (i+1), '-c:s:%d' % i, 'mov_text'])
434 lang_code = self._conver_lang_code(lang)
435 if lang_code is not None:
436 opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code])
437 opts.extend(['-f', 'mp4'])
438
439 temp_filename = filename + u'.temp'
440 self._downloader.to_screen(u'[ffmpeg] Embedding subtitles in \'%s\'' % filename)
441 self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
442 os.remove(encodeFilename(filename))
443 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
444
445 return True, information
446
447
448 class FFmpegMetadataPP(FFmpegPostProcessor):
449 def run(self, info):
450 metadata = {}
451 if info.get('title') is not None:
452 metadata['title'] = info['title']
453 if info.get('upload_date') is not None:
454 metadata['date'] = info['upload_date']
455 if info.get('uploader') is not None:
456 metadata['artist'] = info['uploader']
457 elif info.get('uploader_id') is not None:
458 metadata['artist'] = info['uploader_id']
459
460 if not metadata:
461 self._downloader.to_screen(u'[ffmpeg] There isn\'t any metadata to add')
462 return True, info
463
464 filename = info['filepath']
465 temp_filename = prepend_extension(filename, 'temp')
466
467 options = ['-c', 'copy']
468 for (name, value) in metadata.items():
469 options.extend(['-metadata', '%s=%s' % (name, value)])
470
471 self._downloader.to_screen(u'[ffmpeg] Adding metadata to \'%s\'' % filename)
472 self.run_ffmpeg(filename, temp_filename, options)
473 os.remove(encodeFilename(filename))
474 os.rename(encodeFilename(temp_filename), encodeFilename(filename))
475 return True, info
476
477
478 class FFmpegMergerPP(FFmpegPostProcessor):
479 def run(self, info):
480 filename = info['filepath']
481 args = ['-c', 'copy']
482 self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename)
483 self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
484 return True, info
485