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1 | from __future__ import unicode_literals | |
2 | ||
3 | import re | |
4 | import json | |
5 | ||
6 | from .common import InfoExtractor | |
7 | from .youtube import YoutubeIE | |
8 | from ..utils import ( | |
9 | clean_html, | |
10 | ExtractorError, | |
11 | get_element_by_id, | |
12 | ) | |
13 | ||
14 | ||
15 | class TechTVMITIE(InfoExtractor): | |
16 | IE_NAME = 'techtv.mit.edu' | |
17 | _VALID_URL = r'https?://techtv\.mit\.edu/(?:videos|embeds)/(?P<id>\d+)' | |
18 | ||
19 | _TEST = { | |
20 | 'url': 'http://techtv.mit.edu/videos/25418-mit-dna-learning-center-set', | |
21 | 'md5': '1f8cb3e170d41fd74add04d3c9330e5f', | |
22 | 'info_dict': { | |
23 | 'id': '25418', | |
24 | 'ext': 'mp4', | |
25 | 'title': 'MIT DNA Learning Center Set', | |
26 | 'description': 'md5:82313335e8a8a3f243351ba55bc1b474', | |
27 | }, | |
28 | } | |
29 | ||
30 | def _real_extract(self, url): | |
31 | video_id = self._match_id(url) | |
32 | raw_page = self._download_webpage( | |
33 | 'http://techtv.mit.edu/videos/%s' % video_id, video_id) | |
34 | clean_page = re.compile(r'<!--.*?-->', re.S).sub('', raw_page) | |
35 | ||
36 | base_url = self._search_regex( | |
37 | r'ipadUrl: \'(.+?cloudfront.net/)', raw_page, 'base url') | |
38 | formats_json = self._search_regex( | |
39 | r'bitrates: (\[.+?\])', raw_page, 'video formats') | |
40 | formats_mit = json.loads(formats_json) | |
41 | formats = [ | |
42 | { | |
43 | 'format_id': f['label'], | |
44 | 'url': base_url + f['url'].partition(':')[2], | |
45 | 'ext': f['url'].partition(':')[0], | |
46 | 'format': f['label'], | |
47 | 'width': f['width'], | |
48 | 'vbr': f['bitrate'], | |
49 | } | |
50 | for f in formats_mit | |
51 | ] | |
52 | ||
53 | title = get_element_by_id('edit-title', clean_page) | |
54 | description = clean_html(get_element_by_id('edit-description', clean_page)) | |
55 | thumbnail = self._search_regex( | |
56 | r'playlist:.*?url: \'(.+?)\'', | |
57 | raw_page, 'thumbnail', flags=re.DOTALL) | |
58 | ||
59 | return { | |
60 | 'id': video_id, | |
61 | 'title': title, | |
62 | 'formats': formats, | |
63 | 'description': description, | |
64 | 'thumbnail': thumbnail, | |
65 | } | |
66 | ||
67 | ||
68 | class MITIE(TechTVMITIE): | |
69 | IE_NAME = 'video.mit.edu' | |
70 | _VALID_URL = r'https?://video\.mit\.edu/watch/(?P<title>[^/]+)' | |
71 | ||
72 | _TEST = { | |
73 | 'url': 'http://video.mit.edu/watch/the-government-is-profiling-you-13222/', | |
74 | 'md5': '7db01d5ccc1895fc5010e9c9e13648da', | |
75 | 'info_dict': { | |
76 | 'id': '21783', | |
77 | 'ext': 'mp4', | |
78 | 'title': 'The Government is Profiling You', | |
79 | 'description': 'md5:ad5795fe1e1623b73620dbfd47df9afd', | |
80 | }, | |
81 | } | |
82 | ||
83 | def _real_extract(self, url): | |
84 | mobj = re.match(self._VALID_URL, url) | |
85 | page_title = mobj.group('title') | |
86 | webpage = self._download_webpage(url, page_title) | |
87 | embed_url = self._search_regex( | |
88 | r'<iframe .*?src="(.+?)"', webpage, 'embed url') | |
89 | return self.url_result(embed_url, ie='TechTVMIT') | |
90 | ||
91 | ||
92 | class OCWMITIE(InfoExtractor): | |
93 | IE_NAME = 'ocw.mit.edu' | |
94 | _VALID_URL = r'^http://ocw\.mit\.edu/courses/(?P<topic>[a-z0-9\-]+)' | |
95 | _BASE_URL = 'http://ocw.mit.edu/' | |
96 | ||
97 | _TESTS = [ | |
98 | { | |
99 | 'url': 'http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-041-probabilistic-systems-analysis-and-applied-probability-fall-2010/video-lectures/lecture-7-multiple-variables-expectations-independence/', | |
100 | 'info_dict': { | |
101 | 'id': 'EObHWIEKGjA', | |
102 | 'ext': 'mp4', | |
103 | 'title': 'Lecture 7: Multiple Discrete Random Variables: Expectations, Conditioning, Independence', | |
104 | 'description': 'In this lecture, the professor discussed multiple random variables, expectations, and binomial distribution.', | |
105 | 'upload_date': '20121109', | |
106 | 'uploader_id': 'MIT', | |
107 | 'uploader': 'MIT OpenCourseWare', | |
108 | } | |
109 | }, | |
110 | { | |
111 | 'url': 'http://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/1.-differentiation/part-a-definition-and-basic-rules/session-1-introduction-to-derivatives/', | |
112 | 'info_dict': { | |
113 | 'id': '7K1sB05pE0A', | |
114 | 'ext': 'mp4', | |
115 | 'title': 'Session 1: Introduction to Derivatives', | |
116 | 'upload_date': '20090818', | |
117 | 'uploader_id': 'MIT', | |
118 | 'uploader': 'MIT OpenCourseWare', | |
119 | 'description': 'This section contains lecture video excerpts, lecture notes, an interactive mathlet with supporting documents, and problem solving videos.', | |
120 | } | |
121 | } | |
122 | ] | |
123 | ||
124 | def _real_extract(self, url): | |
125 | mobj = re.match(self._VALID_URL, url) | |
126 | topic = mobj.group('topic') | |
127 | ||
128 | webpage = self._download_webpage(url, topic) | |
129 | title = self._html_search_meta('WT.cg_s', webpage) | |
130 | description = self._html_search_meta('Description', webpage) | |
131 | ||
132 | # search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, start, stop, captions_file) | |
133 | embed_chapter_media = re.search(r'ocw_embed_chapter_media\((.+?)\)', webpage) | |
134 | if embed_chapter_media: | |
135 | metadata = re.sub(r'[\'"]', '', embed_chapter_media.group(1)) | |
136 | metadata = re.split(r', ?', metadata) | |
137 | yt = metadata[1] | |
138 | else: | |
139 | # search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, captions_file) | |
140 | embed_media = re.search(r'ocw_embed_media\((.+?)\)', webpage) | |
141 | if embed_media: | |
142 | metadata = re.sub(r'[\'"]', '', embed_media.group(1)) | |
143 | metadata = re.split(r', ?', metadata) | |
144 | yt = metadata[1] | |
145 | else: | |
146 | raise ExtractorError('Unable to find embedded YouTube video.') | |
147 | video_id = YoutubeIE.extract_id(yt) | |
148 | ||
149 | return { | |
150 | '_type': 'url_transparent', | |
151 | 'id': video_id, | |
152 | 'title': title, | |
153 | 'description': description, | |
154 | 'url': yt, | |
155 | 'ie_key': 'Youtube', | |
156 | } |