mirror of
https://github.com/yt-dlp/yt-dlp.git
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132 lines
5.1 KiB
Python
132 lines
5.1 KiB
Python
from __future__ import unicode_literals
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import re
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import json
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from .common import InfoExtractor
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from .youtube import YoutubeIE
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from ..utils import (
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clean_html,
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ExtractorError,
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get_element_by_id,
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)
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class TechTVMITIE(InfoExtractor):
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IE_NAME = 'techtv.mit.edu'
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_VALID_URL = r'https?://techtv\.mit\.edu/(?:videos|embeds)/(?P<id>\d+)'
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_TEST = {
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'url': 'http://techtv.mit.edu/videos/25418-mit-dna-learning-center-set',
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'md5': '00a3a27ee20d44bcaa0933ccec4a2cf7',
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'info_dict': {
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'id': '25418',
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'ext': 'mp4',
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'title': 'MIT DNA and Protein Sets',
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'description': 'md5:46f5c69ce434f0a97e7c628cc142802d',
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},
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}
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def _real_extract(self, url):
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video_id = self._match_id(url)
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raw_page = self._download_webpage(
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'http://techtv.mit.edu/videos/%s' % video_id, video_id)
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clean_page = re.compile(r'<!--.*?-->', re.S).sub('', raw_page)
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base_url = self._proto_relative_url(self._search_regex(
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r'ipadUrl: \'(.+?cloudfront.net/)', raw_page, 'base url'), 'http:')
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formats_json = self._search_regex(
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r'bitrates: (\[.+?\])', raw_page, 'video formats')
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formats_mit = json.loads(formats_json)
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formats = [
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{
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'format_id': f['label'],
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'url': base_url + f['url'].partition(':')[2],
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'ext': f['url'].partition(':')[0],
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'format': f['label'],
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'width': f['width'],
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'vbr': f['bitrate'],
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}
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for f in formats_mit
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]
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title = get_element_by_id('edit-title', clean_page)
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description = clean_html(get_element_by_id('edit-description', clean_page))
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thumbnail = self._search_regex(
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r'playlist:.*?url: \'(.+?)\'',
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raw_page, 'thumbnail', flags=re.DOTALL)
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return {
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'id': video_id,
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'title': title,
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'formats': formats,
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'description': description,
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'thumbnail': thumbnail,
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}
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class OCWMITIE(InfoExtractor):
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IE_NAME = 'ocw.mit.edu'
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_VALID_URL = r'^https?://ocw\.mit\.edu/courses/(?P<topic>[a-z0-9\-]+)'
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_BASE_URL = 'http://ocw.mit.edu/'
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_TESTS = [
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{
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'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/',
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'info_dict': {
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'id': 'EObHWIEKGjA',
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'ext': 'webm',
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'title': 'Lecture 7: Multiple Discrete Random Variables: Expectations, Conditioning, Independence',
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'description': 'In this lecture, the professor discussed multiple random variables, expectations, and binomial distribution.',
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'upload_date': '20121109',
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'uploader_id': 'MIT',
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'uploader': 'MIT OpenCourseWare',
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}
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},
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{
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'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/',
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'info_dict': {
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'id': '7K1sB05pE0A',
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'ext': 'mp4',
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'title': 'Session 1: Introduction to Derivatives',
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'upload_date': '20090818',
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'uploader_id': 'MIT',
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'uploader': 'MIT OpenCourseWare',
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'description': 'This section contains lecture video excerpts, lecture notes, an interactive mathlet with supporting documents, and problem solving videos.',
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}
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}
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]
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def _real_extract(self, url):
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mobj = re.match(self._VALID_URL, url)
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topic = mobj.group('topic')
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webpage = self._download_webpage(url, topic)
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title = self._html_search_meta('WT.cg_s', webpage)
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description = self._html_search_meta('Description', webpage)
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# search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, start, stop, captions_file)
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embed_chapter_media = re.search(r'ocw_embed_chapter_media\((.+?)\)', webpage)
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if embed_chapter_media:
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metadata = re.sub(r'[\'"]', '', embed_chapter_media.group(1))
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metadata = re.split(r', ?', metadata)
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yt = metadata[1]
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else:
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# search for call to ocw_embed_chapter_media(container_id, media_url, provider, page_url, image_url, captions_file)
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embed_media = re.search(r'ocw_embed_media\((.+?)\)', webpage)
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if embed_media:
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metadata = re.sub(r'[\'"]', '', embed_media.group(1))
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metadata = re.split(r', ?', metadata)
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yt = metadata[1]
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else:
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raise ExtractorError('Unable to find embedded YouTube video.')
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video_id = YoutubeIE.extract_id(yt)
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return {
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'_type': 'url_transparent',
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'id': video_id,
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'title': title,
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'description': description,
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'url': yt,
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'ie_key': 'Youtube',
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}
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