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[youtubedl] / youtube_dl / extractor / videolecturesnet.py
1 from __future__ import unicode_literals
2
3 import re
4
5 from .common import InfoExtractor
6 from ..utils import (
7 find_xpath_attr,
8 int_or_none,
9 parse_duration,
10 unified_strdate,
11 )
12
13
14 class VideoLecturesNetIE(InfoExtractor):
15 _VALID_URL = r'http://(?:www\.)?videolectures\.net/(?P<id>[^/#?]+)/'
16 IE_NAME = 'videolectures.net'
17
18 _TEST = {
19 'url': 'http://videolectures.net/promogram_igor_mekjavic_eng/',
20 'info_dict': {
21 'id': 'promogram_igor_mekjavic_eng',
22 'ext': 'mp4',
23 'title': 'Automatics, robotics and biocybernetics',
24 'description': 'md5:815fc1deb6b3a2bff99de2d5325be482',
25 'upload_date': '20130627',
26 'duration': 565,
27 'thumbnail': 're:http://.*\.jpg',
28 },
29 }
30
31 def _real_extract(self, url):
32 mobj = re.match(self._VALID_URL, url)
33 video_id = mobj.group('id')
34
35 smil_url = 'http://videolectures.net/%s/video/1/smil.xml' % video_id
36 smil = self._download_xml(smil_url, video_id)
37
38 title = find_xpath_attr(smil, './/meta', 'name', 'title').attrib['content']
39 description_el = find_xpath_attr(smil, './/meta', 'name', 'abstract')
40 description = (
41 None if description_el is None
42 else description_el.attrib['content'])
43 upload_date = unified_strdate(
44 find_xpath_attr(smil, './/meta', 'name', 'date').attrib['content'])
45
46 switch = smil.find('.//switch')
47 duration = parse_duration(switch.attrib.get('dur'))
48 thumbnail_el = find_xpath_attr(switch, './image', 'type', 'thumbnail')
49 thumbnail = (
50 None if thumbnail_el is None else thumbnail_el.attrib.get('src'))
51
52 formats = [{
53 'url': v.attrib['src'],
54 'width': int_or_none(v.attrib.get('width')),
55 'height': int_or_none(v.attrib.get('height')),
56 'filesize': int_or_none(v.attrib.get('size')),
57 'tbr': int_or_none(v.attrib.get('systemBitrate')) / 1000.0,
58 'ext': v.attrib.get('ext'),
59 } for v in switch.findall('./video')
60 if v.attrib.get('proto') == 'http']
61
62 return {
63 'id': video_id,
64 'title': title,
65 'description': description,
66 'upload_date': upload_date,
67 'duration': duration,
68 'thumbnail': thumbnail,
69 'formats': formats,
70 }