1 from __future__ import unicode_literals
5 from .common import InfoExtractor
10 compat_urllib_request,
28 class UdemyIE(InfoExtractor):
35 lecture/view/?\?lectureId=|
36 [^/]+/learn/v4/t/lecture/
40 _LOGIN_URL = 'https://www.udemy.com/join/login-popup/?displayType=ajax&showSkipButton=1'
41 _ORIGIN_URL = 'https://www.udemy.com'
42 _NETRC_MACHINE = 'udemy'
45 'url': 'https://www.udemy.com/java-tutorial/#/lecture/172757',
46 'md5': '98eda5b657e752cf945d8445e261b5c5',
50 'title': 'Introduction and Installation',
51 'description': 'md5:c0d51f6f21ef4ec65f091055a5eef876',
54 'skip': 'Requires udemy account credentials',
57 'url': 'https://www.udemy.com/electric-bass-right-from-the-start/learn/v4/t/lecture/4580906',
58 'only_matching': True,
60 # no url in outputs format entry
61 'url': 'https://www.udemy.com/learn-web-development-complete-step-by-step-guide-to-success/learn/v4/t/lecture/4125812',
62 'only_matching': True,
64 # only outputs rendition
65 'url': 'https://www.udemy.com/how-you-can-help-your-local-community-5-amazing-examples/learn/v4/t/lecture/3225750?start=0',
66 'only_matching': True,
69 def _extract_course_info(self, webpage, video_id):
70 course = self._parse_json(
71 unescapeHTML(self._search_regex(
72 r'ng-init=["\'].*\bcourse=({.+?})[;"\']',
73 webpage, 'course', default='{}')),
74 video_id, fatal=False) or {}
75 course_id = course.get('id') or self._search_regex(
76 r'data-course-id=["\'](\d+)', webpage, 'course id')
77 return course_id, course.get('title')
79 def _enroll_course(self, base_url, webpage, course_id):
80 def combine_url(base_url, url):
81 return compat_urlparse.urljoin(base_url, url) if not url.startswith('http') else url
83 checkout_url = unescapeHTML(self._search_regex(
84 r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/(?:payment|cart)/checkout/.+?)\1',
85 webpage, 'checkout url', group='url', default=None))
88 'Course %s is not free. You have to pay for it before you can download. '
89 'Use this URL to confirm purchase: %s'
90 % (course_id, combine_url(base_url, checkout_url)),
93 enroll_url = unescapeHTML(self._search_regex(
94 r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/course/subscribe/.+?)\1',
95 webpage, 'enroll url', group='url', default=None))
97 webpage = self._download_webpage(
98 combine_url(base_url, enroll_url),
99 course_id, 'Enrolling in the course',
100 headers={'Referer': base_url})
101 if '>You have enrolled in' in webpage:
102 self.to_screen('%s: Successfully enrolled in the course' % course_id)
104 def _download_lecture(self, course_id, lecture_id):
105 return self._download_json(
106 'https://www.udemy.com/api-2.0/users/me/subscribed-courses/%s/lectures/%s?'
107 % (course_id, lecture_id),
108 lecture_id, 'Downloading lecture JSON', query={
109 'fields[lecture]': 'title,description,view_html,asset',
110 'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,stream_urls,captions,data',
113 def _handle_error(self, response):
114 if not isinstance(response, dict):
116 error = response.get('error')
118 error_str = 'Udemy returned error #%s: %s' % (error.get('code'), error.get('message'))
119 error_data = error.get('data')
121 error_str += ' - %s' % error_data.get('formErrors')
122 raise ExtractorError(error_str, expected=True)
124 def _download_webpage_handle(self, *args, **kwargs):
125 headers = kwargs.get('headers', {}).copy()
126 headers['User-Agent'] = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36'
127 kwargs['headers'] = headers
128 ret = super(UdemyIE, self)._download_webpage_handle(
129 *args, **compat_kwargs(kwargs))
133 if any(p in webpage for p in (
134 '>Please verify you are a human',
135 'Access to this page has been denied because we believe you are using automation tools to browse the website',
137 raise ExtractorError(
138 'Udemy asks you to solve a CAPTCHA. Login with browser, '
139 'solve CAPTCHA, then export cookies and pass cookie file to '
140 'youtube-dl with --cookies.', expected=True)
143 def _download_json(self, url_or_request, *args, **kwargs):
145 'X-Udemy-Snail-Case': 'true',
146 'X-Requested-With': 'XMLHttpRequest',
148 for cookie in self._downloader.cookiejar:
149 if cookie.name == 'client_id':
150 headers['X-Udemy-Client-Id'] = cookie.value
151 elif cookie.name == 'access_token':
152 headers['X-Udemy-Bearer-Token'] = cookie.value
153 headers['X-Udemy-Authorization'] = 'Bearer %s' % cookie.value
155 if isinstance(url_or_request, compat_urllib_request.Request):
156 for header, value in headers.items():
157 url_or_request.add_header(header, value)
159 url_or_request = sanitized_Request(url_or_request, headers=headers)
161 response = super(UdemyIE, self)._download_json(url_or_request, *args, **kwargs)
162 self._handle_error(response)
165 def _real_initialize(self):
169 username, password = self._get_login_info()
173 login_popup = self._download_webpage(
174 self._LOGIN_URL, None, 'Downloading login popup')
176 def is_logged(webpage):
177 return any(re.search(p, webpage) for p in (
178 r'href=["\'](?:https://www\.udemy\.com)?/user/logout/',
182 if is_logged(login_popup):
185 login_form = self._form_hidden_inputs('login-form', login_popup)
189 'password': password,
192 response = self._download_webpage(
193 self._LOGIN_URL, None, 'Logging in',
194 data=urlencode_postdata(login_form),
196 'Referer': self._ORIGIN_URL,
197 'Origin': self._ORIGIN_URL,
200 if not is_logged(response):
201 error = self._html_search_regex(
202 r'(?s)<div[^>]+class="form-errors[^"]*">(.+?)</div>',
203 response, 'error message', default=None)
205 raise ExtractorError('Unable to login: %s' % error, expected=True)
206 raise ExtractorError('Unable to log in')
208 def _real_extract(self, url):
209 lecture_id = self._match_id(url)
211 webpage = self._download_webpage(url, lecture_id)
213 course_id, _ = self._extract_course_info(webpage, lecture_id)
216 lecture = self._download_lecture(course_id, lecture_id)
217 except ExtractorError as e:
218 # Error could possibly mean we are not enrolled in the course
219 if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403:
220 self._enroll_course(url, webpage, course_id)
221 lecture = self._download_lecture(course_id, lecture_id)
225 title = lecture['title']
226 description = lecture.get('description')
228 asset = lecture['asset']
230 asset_type = asset.get('asset_type') or asset.get('assetType')
231 if asset_type != 'Video':
232 raise ExtractorError(
233 'Lecture %s is not a video' % lecture_id, expected=True)
235 stream_url = asset.get('stream_url') or asset.get('streamUrl')
237 youtube_url = self._search_regex(
238 r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url, 'youtube URL', default=None)
240 return self.url_result(youtube_url, 'Youtube')
242 video_id = compat_str(asset['id'])
243 thumbnail = asset.get('thumbnail_url') or asset.get('thumbnailUrl')
244 duration = float_or_none(asset.get('data', {}).get('duration'))
247 automatic_captions = {}
251 def extract_output_format(src, f_id):
253 'url': src.get('url'),
254 'format_id': '%sp' % (src.get('height') or f_id),
255 'width': int_or_none(src.get('width')),
256 'height': int_or_none(src.get('height')),
257 'vbr': int_or_none(src.get('video_bitrate_in_kbps')),
258 'vcodec': src.get('video_codec'),
259 'fps': int_or_none(src.get('frame_rate')),
260 'abr': int_or_none(src.get('audio_bitrate_in_kbps')),
261 'acodec': src.get('audio_codec'),
262 'asr': int_or_none(src.get('audio_sample_rate')),
263 'tbr': int_or_none(src.get('total_bitrate_in_kbps')),
264 'filesize': int_or_none(src.get('file_size_in_bytes')),
267 outputs = asset.get('data', {}).get('outputs')
268 if not isinstance(outputs, dict):
271 def add_output_format_meta(f, key):
272 output = outputs.get(key)
273 if isinstance(output, dict):
274 output_format = extract_output_format(output, key)
275 output_format.update(f)
279 def extract_formats(source_list):
280 if not isinstance(source_list, list):
282 for source in source_list:
283 video_url = url_or_none(source.get('file') or source.get('src'))
286 if source.get('type') == 'application/x-mpegURL' or determine_ext(video_url) == 'm3u8':
287 formats.extend(self._extract_m3u8_formats(
288 video_url, video_id, 'mp4', entry_protocol='m3u8_native',
289 m3u8_id='hls', fatal=False))
291 format_id = source.get('label')
294 'format_id': '%sp' % format_id,
295 'height': int_or_none(format_id),
298 # Some videos contain additional metadata (e.g.
299 # https://www.udemy.com/ios9-swift/learn/#/lecture/3383208)
300 f = add_output_format_meta(f, format_id)
303 def extract_subtitles(track_list):
304 if not isinstance(track_list, list):
306 for track in track_list:
307 if not isinstance(track, dict):
309 if track.get('kind') != 'captions':
311 src = url_or_none(track.get('src'))
314 lang = track.get('language') or track.get(
315 'srclang') or track.get('label')
316 sub_dict = automatic_captions if track.get(
317 'autogenerated') is True else subtitles
318 sub_dict.setdefault(lang, []).append({
322 for url_kind in ('download', 'stream'):
323 urls = asset.get('%s_urls' % url_kind)
324 if isinstance(urls, dict):
325 extract_formats(urls.get('Video'))
327 captions = asset.get('captions')
328 if isinstance(captions, list):
330 if not isinstance(cc, dict):
332 cc_url = url_or_none(cc.get('url'))
335 lang = try_get(cc, lambda x: x['locale']['locale'], compat_str)
336 sub_dict = (automatic_captions if cc.get('source') == 'auto'
338 sub_dict.setdefault(lang or 'en', []).append({
342 view_html = lecture.get('view_html')
344 view_html_urls = set()
345 for source in re.findall(r'<source[^>]+>', view_html):
346 attributes = extract_attributes(source)
347 src = attributes.get('src')
350 res = attributes.get('data-res')
351 height = int_or_none(res)
352 if src in view_html_urls:
354 view_html_urls.add(src)
355 if attributes.get('type') == 'application/x-mpegURL' or determine_ext(src) == 'm3u8':
356 m3u8_formats = self._extract_m3u8_formats(
357 src, video_id, 'mp4', entry_protocol='m3u8_native',
358 m3u8_id='hls', fatal=False)
359 for f in m3u8_formats:
360 m = re.search(r'/hls_(?P<height>\d{3,4})_(?P<tbr>\d{2,})/', f['url'])
362 if not f.get('height'):
363 f['height'] = int(m.group('height'))
365 f['tbr'] = int(m.group('tbr'))
366 formats.extend(m3u8_formats)
368 formats.append(add_output_format_meta({
370 'format_id': '%dp' % height if height else None,
374 # react rendition since 2017.04.15 (see
375 # https://github.com/rg3/youtube-dl/issues/12744)
376 data = self._parse_json(
378 r'videojs-setup-data=(["\'])(?P<data>{.+?})\1', view_html,
379 'setup data', default='{}', group='data'), video_id,
380 transform_source=unescapeHTML, fatal=False)
381 if data and isinstance(data, dict):
382 extract_formats(data.get('sources'))
384 duration = int_or_none(data.get('duration'))
385 extract_subtitles(data.get('tracks'))
387 if not subtitles and not automatic_captions:
388 text_tracks = self._parse_json(
390 r'text-tracks=(["\'])(?P<data>\[.+?\])\1', view_html,
391 'text tracks', default='{}', group='data'), video_id,
392 transform_source=lambda s: js_to_json(unescapeHTML(s)),
394 extract_subtitles(text_tracks)
396 if not formats and outputs:
397 for format_id, output in outputs.items():
398 f = extract_output_format(output, format_id)
402 self._sort_formats(formats, field_preference=('height', 'width', 'tbr', 'format_id'))
407 'description': description,
408 'thumbnail': thumbnail,
409 'duration': duration,
411 'subtitles': subtitles,
412 'automatic_captions': automatic_captions,
416 class UdemyCourseIE(UdemyIE):
417 IE_NAME = 'udemy:course'
418 _VALID_URL = r'https?://(?:www\.)?udemy\.com/(?P<id>[^/?#&]+)'
422 def suitable(cls, url):
423 return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url)
425 def _real_extract(self, url):
426 course_path = self._match_id(url)
428 webpage = self._download_webpage(url, course_path)
430 course_id, title = self._extract_course_info(webpage, course_path)
432 self._enroll_course(url, webpage, course_id)
434 response = self._download_json(
435 'https://www.udemy.com/api-2.0/courses/%s/cached-subscriber-curriculum-items' % course_id,
436 course_id, 'Downloading course curriculum', query={
437 'fields[chapter]': 'title,object_index',
438 'fields[lecture]': 'title,asset',
443 chapter, chapter_number = [None] * 2
444 for entry in response['results']:
445 clazz = entry.get('_class')
446 if clazz == 'lecture':
447 asset = entry.get('asset')
448 if isinstance(asset, dict):
449 asset_type = asset.get('asset_type') or asset.get('assetType')
450 if asset_type != 'Video':
452 lecture_id = entry.get('id')
455 '_type': 'url_transparent',
456 'url': 'https://www.udemy.com/%s/learn/v4/t/lecture/%s' % (course_path, entry['id']),
457 'title': entry.get('title'),
458 'ie_key': UdemyIE.ie_key(),
461 entry['chapter_number'] = chapter_number
463 entry['chapter'] = chapter
464 entries.append(entry)
465 elif clazz == 'chapter':
466 chapter_number = entry.get('object_index')
467 chapter = entry.get('title')
469 return self.playlist_result(entries, course_id, title)