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Add support for ocw.mit.edu video lectures

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This commit is contained in:
Anthony Weems 2014-02-25 14:44:34 -06:00
parent 1d430674c7
commit 151bae3566
2 changed files with 55 additions and 1 deletions
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2
youtube_dl/extractor/__init__.py
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@ -137,7 +137,7 @@
from .mdr import MDRIE
from .metacafe import MetacafeIE
from .metacritic import MetacriticIE
from .mit import TechTVMITIE, MITIE
from .mit import TechTVMITIE, MITIE, OCWMITIE
from .mixcloud import MixcloudIE
from .mpora import MporaIE
from .mofosex import MofosexIE

54
youtube_dl/extractor/mit.py
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@ -3,6 +3,7 @@
from .common import InfoExtractor
from ..utils import (
compat_urlparse,
clean_html,
get_element_by_id,
)
@ -81,3 +82,56 @@ def _real_extract(self, url):
embed_url = self._search_regex(r'<iframe .*?src="(.+?)"', webpage,
u'embed url')
return self.url_result(embed_url, ie='TechTVMIT')
class OCWMITIE(InfoExtractor):
IE_NAME = u'ocw.mit.edu'
_VALID_URL = r'^http://ocw\.mit\.edu/courses/(?P<topic>[a-z0-9\-]+)'
_BASE_URL = u'http://ocw.mit.edu/'
_TESTS = [
{
u'url': u'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/',
u'md5': u'348bef727b573c0bd9ad8a7c08c89ebd',
u'info_dict': {
u'title': u'7. Discrete Random Variables III',
u'description': u'In this lecture, the professor discussed multiple random variables, expectations, and binomial distribution.',
u'subtitles': u'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/MIT6_041F11_lec07_300k.mp4.srt'
}
},
{
u'url': u'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/',
u'md5': u'f4a434f08f15e581eb67cec0b57bcf6f',
u'info_dict': {
u'title': u'Lec 1 _ MIT 18.01 Single Variable Calculus, Fall 2007',
u'subtitles': u'http://ocw.mit.edu//courses/mathematics/18-01sc-single-variable-calculus-fall-2010/ocw-18.01-f07-lec01_300k.SRT'
}
}
]
def _real_extract(self, url):
webpage = self._download_webpage(url, self.IE_NAME)
title = self._html_search_meta(u'WT.cg_s', webpage)
description = self._html_search_meta(u'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'[\'"]', u'', embed_chapter_media.group(1))
metadata = re.split(r', ?', metadata)
yt = metadata[1]
subs = compat_urlparse.urljoin(self._BASE_URL, metadata[7])
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'[\'"]', u'', embed_media.group(1))
metadata = re.split(r', ?', metadata)
yt = metadata[1]
subs = compat_urlparse.urljoin(self._BASE_URL, metadata[5])
else:
raise ExtractorError('Unable to find embedded YouTube video.')
data = self.url_result(yt, 'Youtube')
data['subtitles'] = subs
return data