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[youtubedl] / youtube_dl / extractor / howstuffworks.py
1 from __future__ import unicode_literals
2
3 from .common import InfoExtractor
4 from ..utils import (
5 find_xpath_attr,
6 int_or_none,
7 js_to_json,
8 unescapeHTML,
9 determine_ext,
10 )
11
12
13 class HowStuffWorksIE(InfoExtractor):
14 _VALID_URL = r'https?://[\da-z-]+\.(?:howstuffworks|stuff(?:(?:youshould|theydontwantyouto)know|toblowyourmind|momnevertoldyou)|(?:brain|car)stuffshow|fwthinking|geniusstuff)\.com/(?:[^/]+/)*(?:\d+-)?(?P<id>.+?)-video\.htm'
15 _TESTS = [
16 {
17 'url': 'http://www.stufftoblowyourmind.com/videos/optical-illusions-video.htm',
18 'md5': '76646a5acc0c92bf7cd66751ca5db94d',
19 'info_dict': {
20 'id': '855410',
21 'ext': 'mp4',
22 'title': 'Your Trickster Brain: Optical Illusions -- Science on the Web',
23 'description': 'md5:e374ff9561f6833ad076a8cc0a5ab2fb',
24 },
25 },
26 {
27 'url': 'http://shows.howstuffworks.com/more-shows/why-does-balloon-stick-to-hair-video.htm',
28 'only_matching': True,
29 }
30 ]
31
32 def _real_extract(self, url):
33 display_id = self._match_id(url)
34 webpage = self._download_webpage(url, display_id)
35 clip_js = self._search_regex(
36 r'(?s)var clip = ({.*?});', webpage, 'clip info')
37 clip_info = self._parse_json(
38 clip_js, display_id, transform_source=js_to_json)
39
40 video_id = clip_info['content_id']
41 formats = []
42 m3u8_url = clip_info.get('m3u8')
43 if m3u8_url and determine_ext(m3u8_url) == 'm3u8':
44 formats.extend(self._extract_m3u8_formats(m3u8_url, video_id, 'mp4', format_id='hls', fatal=True))
45 flv_url = clip_info.get('flv_url')
46 if flv_url:
47 formats.append({
48 'url': flv_url,
49 'format_id': 'flv',
50 })
51 for video in clip_info.get('mp4', []):
52 formats.append({
53 'url': video['src'],
54 'format_id': 'mp4-%s' % video['bitrate'],
55 'vbr': int_or_none(video['bitrate'].rstrip('k')),
56 })
57
58 if not formats:
59 smil = self._download_xml(
60 'http://services.media.howstuffworks.com/videos/%s/smil-service.smil' % video_id,
61 video_id, 'Downloading video SMIL')
62
63 http_base = find_xpath_attr(
64 smil,
65 './{0}head/{0}meta'.format('{http://www.w3.org/2001/SMIL20/Language}'),
66 'name',
67 'httpBase').get('content')
68
69 URL_SUFFIX = '?v=2.11.3&fp=LNX 11,2,202,356&r=A&g=A'
70
71 for video in smil.findall(
72 './{0}body/{0}switch/{0}video'.format('{http://www.w3.org/2001/SMIL20/Language}')):
73 vbr = int_or_none(video.attrib['system-bitrate'], scale=1000)
74 formats.append({
75 'url': '%s/%s%s' % (http_base, video.attrib['src'], URL_SUFFIX),
76 'format_id': '%dk' % vbr,
77 'vbr': vbr,
78 })
79
80 self._sort_formats(formats)
81
82 return {
83 'id': '%s' % video_id,
84 'display_id': display_id,
85 'title': unescapeHTML(clip_info['clip_title']),
86 'description': unescapeHTML(clip_info.get('caption')),
87 'thumbnail': clip_info.get('video_still_url'),
88 'duration': int_or_none(clip_info.get('duration')),
89 'formats': formats,
90 }