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from __future__ import unicode_literals
from .common import InfoExtractor
from ..utils import find_xpath_attr
class HowStuffWorksIE(InfoExtractor):
_VALID_URL = r'https?://[\da-z-]+\.howstuffworks\.com/(?:[^/]+/)*\d+-(?P<id>.+?)-video\.htm'
_TESTS = [
{
'url': 'http://adventure.howstuffworks.com/5266-cool-jobs-iditarod-musher-video.htm',
'info_dict': {
'id': '450221',
'ext': 'flv',
'title': 'Cool Jobs - Iditarod Musher',
'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.',
'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/5266.jpg',
},
},
{
'url': 'http://adventure.howstuffworks.com/7199-survival-zone-food-and-water-in-the-savanna-video.htm',
'info_dict': {
'id': '453464',
'ext': 'mp4',
'title': 'Survival Zone: Food and Water In the Savanna',
'description': 'Learn how to find both food and water while trekking in the African savannah. In this video from the Discovery Channel.',
'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/7199.jpg',
},
},
{
'url': 'http://entertainment.howstuffworks.com/arts/2706-sword-swallowing-1-by-dan-meyer-video.htm',
'info_dict': {
'id': '440011',
'ext': 'flv',
'title': 'Sword Swallowing #1 by Dan Meyer',
'description': 'Video footage (1 of 3) used by permission of the owner Dan Meyer through Sword Swallowers Association International <www.swordswallow.org>',
'thumbnail': 'http://s.hswstatic.com/gif/videos/480x360/118306353233.jpg',
},
},
]
def _real_extract(self, url):
display_id = self._match_id(url)
webpage = self._download_webpage(url, display_id)
clip_info = self._search_regex('(?s)var clip = {(.*?)};', webpage, 'clip info')
def extract_clip_info(key, clip_info, name=None, **kargs):
if name is None:
name = key
return self._html_search_regex(
r"\s*%s\s*: '?([^'\n]*[^'\n,])" % key, clip_info, name, **kargs)
video_id = extract_clip_info('content_id', clip_info, 'video id')
formats = []
m3u8_url = extract_clip_info('m3u8', clip_info, 'm3u8 url', default=None)
if m3u8_url is not None:
formats += self._extract_m3u8_formats(m3u8_url , video_id, 'mp4')
mp4 = self._parse_json(
extract_clip_info(
'mp4', clip_info, 'formats').replace('},]','}]'), video_id)
for video in mp4:
formats.append({
'url': video['src'],
'format_id': video['bitrate'],
'vbr': int(video['bitrate'].rstrip('k')),
})
if not formats:
smil = self._download_xml(
'http://services.media.howstuffworks.com/videos/%s/smil-service.smil' % video_id,
video_id, 'Downloading video SMIL')
http_base = find_xpath_attr(
smil,
'./{0}head/{0}meta'.format('{http://www.w3.org/2001/SMIL20/Language}'),
'name',
'httpBase').get('content')
URL_SUFFIX = '?v=2.11.3&fp=LNX 11,2,202,356&r=A&g=A'
for video in smil.findall(
'./{0}body/{0}switch/{0}video'.format('{http://www.w3.org/2001/SMIL20/Language}')):
vbr = int(video.attrib['system-bitrate']) / 1000
formats.append({
'url': '%s/%s%s' % (http_base, video.attrib['src'], URL_SUFFIX),
'format_id': '%dk' % vbr,
'vbr': vbr,
})
self._sort_formats(formats)
return {
'id': video_id,
'display_id': display_id,
'title': extract_clip_info('clip_title', clip_info, 'title'),
'description': extract_clip_info('caption', clip_info, 'description', fatal=False),
'thumbnail': extract_clip_info('video_still_url', clip_info, 'thumbnail'),
'duration': extract_clip_info('duration', clip_info),
'formats': formats,
}
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