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YoutubeIE: Detect new Vevo style videos

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The url_encoded_fmt_stream_map can be found in the video page, but the signature must be decrypted, we get it from the webpage instead of the `get_video_info` pages because we have only discover the algorithm for keys with both sub keys of size 43.
This commit is contained in:
Jaime Marquínez Ferrándiz 2013-06-21 19:28:23 +02:00
parent 50d2376769
commit 77d0f05f71
1 changed files with 20 additions and 0 deletions
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20
youtube_dl/InfoExtractors.py
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@ -724,6 +724,16 @@ def _real_extract(self, url):
# Decide which formats to download
req_format = self._downloader.params.get('format', None)
try:
mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
info = json.loads(mobj.group(1))
if 'dashmpd' in info['args']:
# Vevo videos with encrypted signatures
self.to_screen(u'Vevo video detected.')
video_info['url_encoded_fmt_stream_map'] = [info['args']['url_encoded_fmt_stream_map']]
except ValueError:
pass
if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
self.report_rtmp_download()
video_url_list = [(None, video_info['conn'][0])]
@ -735,6 +745,16 @@ def _real_extract(self, url):
url = url_data['url'][0]
if 'sig' in url_data:
url += '&signature=' + url_data['sig'][0]
if 's' in url_data:
def k(s):
"""Decrypt the key the two subkeys must have a length of 43"""
(a,b) = s.split('.')
b = ''.join([b[:8],a[0],b[9:18],b[-4],b[19:39], b[18]])[0:40]
a = a[-40:]
s_dec = '.'.join((a,b))[::-1]
return s_dec
key = k(url_data['s'][0])
url += '&signature=' + key
if 'ratebypass' not in url:
url += '&ratebypass=yes'
url_map[url_data['itag'][0]] = url