1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
import re
import json
from .common import InfoExtractor
from .youtube import YoutubeIE
from ..utils import (
clean_html,
ExtractorError,
get_element_by_id,
)
class TechTVMITIE(InfoExtractor):
IE_NAME = 'techtv.mit.edu'
_VALID_URL = r'https?://techtv\.mit\.edu/(?:videos|embeds)/(?P<id>\d+)'
_TEST = {
'url': 'http://techtv.mit.edu/videos/25418-mit-dna-learning-center-set',
'md5': '00a3a27ee20d44bcaa0933ccec4a2cf7',
'info_dict': {
'id': '25418',
'ext': 'mp4',
'title': 'MIT DNA and Protein Sets',
'description': 'md5:46f5c69ce434f0a97e7c628cc142802d',
},
}
def _real_extract(self, url):
video_id = self._match_id(url)
raw_page = self._download_webpage(
'http://techtv.mit.edu/videos/%s' % video_id, video_id)
clean_page = re.compile(r'<!--.*?-->', re.S).sub('', raw_page)
base_url = self._proto_relative_url(self._search_regex(
r'ipadUrl: \'(.+?cloudfront.net/)', raw_page, 'base url'), 'http:')
formats_json = self._search_regex(
r'bitrates: (\[.+?\])', raw_page, 'video formats')
formats_mit = json.loads(formats_json)
formats = [
{
'format_id': f['label'],
'url': base_url + f['url'].partition(':')[2],
'ext': f['url'].partition(':')[0],
'format': f['label'],
'width': f['width'],
'vbr': f['bitrate'],
}
for f in formats_mit
]
title = get_element_by_id('edit-title', clean_page)
description = clean_html(get_element_by_id('edit-description', clean_page))
thumbnail = self._search_regex(
r'playlist:.*?url: \'(.+?)\'',
raw_page, 'thumbnail', flags=re.DOTALL)
return {
'id': video_id,
'title': title,
'formats': formats,
'description': description,
'thumbnail': thumbnail,
}
class OCWMITIE(InfoExtractor):
IE_NAME = 'ocw.mit.edu'
_VALID_URL = r'^https?://ocw\.mit\.edu/courses/(?P<topic>[a-z0-9\-]+)'
_BASE_URL = 'http://ocw.mit.edu/'
_TESTS = [
{
'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/',
'info_dict': {
'id': 'EObHWIEKGjA',
'ext': 'webm',
'title': 'Lecture 7: Multiple Discrete Random Variables: Expectations, Conditioning, Independence',
'description': 'In this lecture, the professor discussed multiple random variables, expectations, and binomial distribution.',
'upload_date': '20121109',
'uploader_id': 'MIT',
'uploader': 'MIT OpenCourseWare',
}
},
{
'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/',
'info_dict': {
'id': '7K1sB05pE0A',
'ext': 'mp4',
'title': 'Session 1: Introduction to Derivatives',
'upload_date': '20090818',
'uploader_id': 'MIT',
'uploader': 'MIT OpenCourseWare',
'description': 'This section contains lecture video excerpts, lecture notes, an interactive mathlet with supporting documents, and problem solving videos.',
}
}
]
def _real_extract(self, url):
mobj = self._match_valid_url(url)
topic = mobj.group('topic')
webpage = self._download_webpage(url, topic)
title = self._html_search_meta('WT.cg_s', webpage)
description = self._html_search_meta('Description', webpage)
# search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, start, stop, captions_file)
embed_chapter_media = re.search(r'ocw_embed_chapter_media\((.+?)\)', webpage)
if embed_chapter_media:
metadata = re.sub(r'[\'"]', '', embed_chapter_media.group(1))
metadata = re.split(r', ?', metadata)
yt = metadata[1]
else:
# search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, captions_file)
embed_media = re.search(r'ocw_embed_media\((.+?)\)', webpage)
if embed_media:
metadata = re.sub(r'[\'"]', '', embed_media.group(1))
metadata = re.split(r', ?', metadata)
yt = metadata[1]
else:
raise ExtractorError('Unable to find embedded YouTube video.')
video_id = YoutubeIE.extract_id(yt)
return {
'_type': 'url_transparent',
'id': video_id,
'title': title,
'description': description,
'url': yt,
'ie_key': 'Youtube',
}
|
