-    _VALID_URL =  r'(?:http://)?v\.youku\.com/v_show/id_(?P<ID>[A-Za-z0-9]+)\.html'
-
-    def _gen_sid(self):
-        nowTime = int(time.time() * 1000)
-        random1 = random.randint(1000,1998)
-        random2 = random.randint(1000,9999)
-
-        return "%d%d%d" %(nowTime,random1,random2)
-
-    def _get_file_ID_mix_string(self, seed):
-        mixed = []
-        source = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\:._-1234567890")
-        seed = float(seed)
-        for i in range(len(source)):
-            seed  =  (seed * 211 + 30031 ) % 65536
-            index  =  math.floor(seed / 65536 * len(source) )
-            mixed.append(source[int(index)])
-            source.remove(source[int(index)])
-        #return ''.join(mixed)
-        return mixed
-
-    def _get_file_id(self, fileId, seed):
-        mixed = self._get_file_ID_mix_string(seed)
-        ids = fileId.split('*')
-        realId = []
-        for ch in ids:
-            if ch:
-                realId.append(mixed[int(ch)])
-        return ''.join(realId)
+    IE_NAME = 'youku'
+    IE_DESC = '优酷'
+    _VALID_URL = r'''(?x)
+        (?:
+            https?://(
+                (?:v|player)\.youku\.com/(?:v_show/id_|player\.php/sid/)|
+                video\.tudou\.com/v/)|
+            youku:)
+        (?P<id>[A-Za-z0-9]+)(?:\.html|/v\.swf|)
+    '''
+
+    _TESTS = [{
+        # MD5 is unstable
+        'url': 'http://v.youku.com/v_show/id_XMTc1ODE5Njcy.html',
+        'info_dict': {
+            'id': 'XMTc1ODE5Njcy',
+            'title': '★Smile﹗♡ Git Fresh -Booty Music舞蹈.',
+            'ext': 'mp4',
+            'duration': 74.73,
+            'thumbnail': r're:^https?://.*',
+            'uploader': '。躲猫猫、',
+            'uploader_id': '36017967',
+            'uploader_url': 'http://i.youku.com/u/UMTQ0MDcxODY4',
+            'tags': list,
+        }
+    }, {
+        'url': 'http://player.youku.com/player.php/sid/XNDgyMDQ2NTQw/v.swf',
+        'only_matching': True,
+    }, {
+        'url': 'http://v.youku.com/v_show/id_XODgxNjg1Mzk2_ev_1.html',
+        'info_dict': {
+            'id': 'XODgxNjg1Mzk2',
+            'ext': 'mp4',
+            'title': '武媚娘传奇 85',
+            'duration': 1999.61,
+            'thumbnail': r're:^https?://.*',
+            'uploader': '疯狂豆花',
+            'uploader_id': '62583473',
+            'uploader_url': 'http://i.youku.com/u/UMjUwMzMzODky',
+            'tags': list,
+        },
+    }, {
+        'url': 'http://v.youku.com/v_show/id_XMTI1OTczNDM5Mg==.html',
+        'info_dict': {
+            'id': 'XMTI1OTczNDM5Mg',
+            'ext': 'mp4',
+            'title': '花千骨 04',
+            'duration': 2363,
+            'thumbnail': r're:^https?://.*',
+            'uploader': '放剧场-花千骨',
+            'uploader_id': '772849359',
+            'uploader_url': 'http://i.youku.com/u/UMzA5MTM5NzQzNg==',
+            'tags': list,
+        },
+    }, {
+        'url': 'http://v.youku.com/v_show/id_XNjA1NzA2Njgw.html',
+        'note': 'Video protected with password',
+        'info_dict': {
+            'id': 'XNjA1NzA2Njgw',
+            'ext': 'mp4',
+            'title': '邢義田复旦讲座之想象中的胡人—从“左衽孔子”说起',
+            'duration': 7264.5,
+            'thumbnail': r're:^https?://.*',
+            'uploader': 'FoxJin1006',
+            'uploader_id': '322014285',
+            'uploader_url': 'http://i.youku.com/u/UMTI4ODA1NzE0MA==',
+            'tags': list,
+        },
+        'params': {
+            'videopassword': '100600',
+        },
+    }, {
+        # /play/get.json contains streams with "channel_type":"tail"
+        'url': 'http://v.youku.com/v_show/id_XOTUxMzg4NDMy.html',
+        'info_dict': {
+            'id': 'XOTUxMzg4NDMy',
+            'ext': 'mp4',
+            'title': '我的世界☆明月庄主☆车震猎杀☆杀人艺术Minecraft',
+            'duration': 702.08,
+            'thumbnail': r're:^https?://.*',
+            'uploader': '明月庄主moon',
+            'uploader_id': '38465621',
+            'uploader_url': 'http://i.youku.com/u/UMTUzODYyNDg0',
+            'tags': list,
+        },
+    }, {
+        'url': 'http://video.tudou.com/v/XMjIyNzAzMTQ4NA==.html?f=46177805',
+        'info_dict': {
+            'id': 'XMjIyNzAzMTQ4NA',
+            'ext': 'mp4',
+            'title': '卡马乔国足开大脚长传冲吊集锦',
+            'duration': 289,
+            'thumbnail': r're:^https?://.*',
+            'uploader': '阿卜杜拉之星',
+            'uploader_id': '2382249',
+            'uploader_url': 'http://i.youku.com/u/UOTUyODk5Ng==',
+            'tags': list,
+        },
+    }, {
+        'url': 'http://video.tudou.com/v/XMjE4ODI3OTg2MA==.html',
+        'only_matching': True,
+    }]
+
+    @staticmethod
+    def get_ysuid():
+        return '%d%s' % (int(time.time()), ''.join([
+            random.choice(string.ascii_letters) for i in range(3)]))
+
+    def get_format_name(self, fm):
+        _dict = {
+            '3gp': 'h6',
+            '3gphd': 'h5',
+            'flv': 'h4',
+            'flvhd': 'h4',
+            'mp4': 'h3',
+            'mp4hd': 'h3',
+            'mp4hd2': 'h4',
+            'mp4hd3': 'h4',
+            'hd2': 'h2',
+            'hd3': 'h1',
+        }
+        return _dict.get(fm)