webpage = self._download_webpage(url, video_id, 'Downloading page')
mobj = re.search(r'(?m)fo\.addVariable\("file",\s"(?P<fileid>[\da-z]+)"\);\n'
webpage = self._download_webpage(url, video_id, 'Downloading page')
mobj = re.search(r'(?m)fo\.addVariable\("file",\s"(?P<fileid>[\da-z]+)"\);\n'