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from __future__ import unicode_literals
from .common import InfoExtractor
from ..utils import (
find_xpath_attr,
int_or_none,
js_to_json,
unescapeHTML,
)
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.',
'display_id': 'cool-jobs-iditarod-musher',
'thumbnail': 're:^https?://.*\.jpg$',
'duration': 161,
},
},
{
'url': 'http://adventure.howstuffworks.com/7199-survival-zone-food-and-water-in-the-savanna-video.htm',
'info_dict': {
'id': '453464',
'ext': 'mp4',
'title': 'Survival Zone: Food and Water In the Savanna',
'description': 'Learn how to find both food and water while trekking in the African savannah. In this video from the Discovery Channel.',
'display_id': 'survival-zone-food-and-water-in-the-savanna',
'thumbnail': 're:^https?://.*\.jpg$',
},
},
{
'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>',
'display_id': 'sword-swallowing-1-by-dan-meyer',
'thumbnail': 're:^https?://.*\.jpg$',
},
},
{
'url': 'http://shows.howstuffworks.com/stuff-to-blow-your-mind/optical-illusions-video.htm',
'info_dict': {
'id': '855410',
'ext': 'mp4',
'title': 'Stuff to Blow Your Mind',
'description': 'When it comes to optical illusions it’s pretty easy to jailbreak the operating system of your mind and load a new program onto it. Find out why your visual system willingly makes errors in interpretation.',
'display_id': 'optical-illusions',
'thumbnail': 're:^https?://.*\.jpg$',
},
}
]
def _real_extract(self, url):
display_id = self._match_id(url)
webpage = self._download_webpage(url, display_id)
clip_js = self._search_regex(
r'(?s)var clip = ({.*?});', webpage, 'clip info')
clip_info = self._parse_json(
clip_js, display_id, transform_source=js_to_json)
video_id = clip_info['content_id']
formats = []
m3u8_url = clip_info.get('m3u8')
if m3u8_url:
formats += self._extract_m3u8_formats(m3u8_url, video_id, 'mp4')
for video in clip_info.get('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_or_none(video.attrib['system-bitrate'], scale=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': '%s' % video_id,
'display_id': display_id,
'title': unescapeHTML(clip_info['clip_title']),
'description': unescapeHTML(clip_info.get('caption')),
'thumbnail': clip_info.get('video_still_url'),
'duration': clip_info.get('duration'),
'formats': formats,
}
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