def METHOD_NAME(self, webpage):
    # The server URL is hardcoded
    video_url = 'rtmpe://videof.infoq.com/cfx/st/'
    # Extract video URL
    encoded_id = self._search_regex(
        r"jsclassref\s*=\s*'([^']*)'", webpage, 'encoded id', default=None)
    real_id = compat_urllib_parse_unquote(compat_b64decode(encoded_id).decode('utf-8'))
    playpath = 'mp4:' + real_id
    return [{
        'format_id': 'rtmp_video',
        'url': video_url,
        'ext': determine_ext(playpath),
        'play_path': playpath,
    }]