youtube-dl

Another place where youtube-dl lives on
git clone git://git.oshgnacknak.de/youtube-dl.git
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howstuffworks.py (3465B)

      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         }