1 from __future__ import unicode_literals
3 from .common import InfoExtractor
4 from ..utils import find_xpath_attr
7 class HowStuffWorksIE(InfoExtractor):
8 _VALID_URL = r'https?://[\da-z-]+\.howstuffworks\.com/(?:[^/]+/)*\d+-(?P<id>.+?)-video\.htm'
11 'url': 'http://adventure.howstuffworks.com/5266-cool-jobs-iditarod-musher-video.htm',
15 'title': 'Cool Jobs - Iditarod Musher',
16 'description': 'Cold sleds, freezing temps and warm dog breath... an Iditarod musher\'s dream. Kasey-Dee Gardner jumps on a sled to find out what the big deal is.',
17 'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/5266.jpg',
21 'url': 'http://adventure.howstuffworks.com/7199-survival-zone-food-and-water-in-the-savanna-video.htm',
25 'title': 'Survival Zone: Food and Water In the Savanna',
26 'description': 'Learn how to find both food and water while trekking in the African savannah. In this video from the Discovery Channel.',
27 'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/7199.jpg',
31 'url': 'http://entertainment.howstuffworks.com/arts/2706-sword-swallowing-1-by-dan-meyer-video.htm',
35 'title': 'Sword Swallowing #1 by Dan Meyer',
36 'description': 'Video footage (1 of 3) used by permission of the owner Dan Meyer through Sword Swallowers Association International <www.swordswallow.org>',
37 'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/118306353233.jpg',
42 def _real_extract(self, url):
43 display_id = self._match_id(url)
44 webpage = self._download_webpage(url, display_id)
45 clip_info = self._search_regex('(?s)var clip = {(.*?)};', webpage, 'clip info')
47 def extract_clip_info(key, clip_info, name=None, **kargs):
50 return self._html_search_regex(
51 r"\s*%s\s*: '?([^'\n]*[^'\n,])" % key, clip_info, name, **kargs)
53 video_id = extract_clip_info('content_id', clip_info, 'video id')
55 m3u8_url = extract_clip_info('m3u8', clip_info, 'm3u8 url', default=None)
56 if m3u8_url is not None:
57 formats += self._extract_m3u8_formats(m3u8_url , video_id, 'mp4')
58 mp4 = self._parse_json(
60 'mp4', clip_info, 'formats').replace('},]','}]'), video_id)
64 'format_id': video['bitrate'],
65 'vbr': int(video['bitrate'].rstrip('k')),
69 smil = self._download_xml(
70 'http://services.media.howstuffworks.com/videos/%s/smil-service.smil' % video_id,
71 video_id, 'Downloading video SMIL')
73 http_base = find_xpath_attr(
75 './{0}head/{0}meta'.format('{http://www.w3.org/2001/SMIL20/Language}'),
77 'httpBase').get('content')
79 URL_SUFFIX = '?v=2.11.3&fp=LNX 11,2,202,356&r=A&g=A'
81 for video in smil.findall(
82 './{0}body/{0}switch/{0}video'.format('{http://www.w3.org/2001/SMIL20/Language}')):
83 vbr = int(video.attrib['system-bitrate']) / 1000
85 'url': '%s/%s%s' % (http_base, video.attrib['src'], URL_SUFFIX),
86 'format_id': '%dk' % vbr,
90 self._sort_formats(formats)
94 'display_id': display_id,
95 'title': extract_clip_info('clip_title', clip_info, 'title'),
96 'description': extract_clip_info('caption', clip_info, 'description', fatal=False),
97 'thumbnail': extract_clip_info('video_still_url', clip_info, 'thumbnail'),
98 'duration': extract_clip_info('duration', clip_info),