-    _VALID_URL = r'(?P<domain>https?://(?:www\.)?viddler.com)/(?:v|embed|player)/(?P<id>[a-z0-9]+)'
-    _TEST = {
-        u"url": u"http://www.viddler.com/v/43903784",
-        u'file': u'43903784.mp4',
-        u'md5': u'fbbaedf7813e514eb7ca30410f439ac9',
-        u'info_dict': {
-            u"title": u"Video Made Easy",
-            u"uploader": u"viddler",
-            u"duration": 100.89,
+    _VALID_URL = r'https?://(?:www\.)?viddler\.com/(?:v|embed|player)/(?P<id>[a-z0-9]+)'
+    _TESTS = [{
+        'url': 'http://www.viddler.com/v/43903784',
+        'md5': 'ae43ad7cb59431ce043f0ff7fa13cbf4',
+        'info_dict': {
+            'id': '43903784',
+            'ext': 'mp4',
+            'title': 'Video Made Easy',
+            'description': 'md5:6a697ebd844ff3093bd2e82c37b409cd',
+            'uploader': 'viddler',
+            'timestamp': 1335371429,
+            'upload_date': '20120425',
+            'duration': 100.89,
+            'thumbnail': 're:^https?://.*\.jpg$',
+            'view_count': int,
+            'comment_count': int,
+            'categories': ['video content', 'high quality video', 'video made easy', 'how to produce video with limited resources', 'viddler'],
+        }
+    }, {
+        'url': 'http://www.viddler.com/v/4d03aad9/',
+        'md5': 'faa71fbf70c0bee7ab93076fd007f4b0',
+        'info_dict': {
+            'id': '4d03aad9',
+            'ext': 'mp4',
+            'title': 'WALL-TO-GORTAT',
+            'upload_date': '20150126',
+            'uploader': 'deadspin',
+            'timestamp': 1422285291,
+            'view_count': int,
+            'comment_count': int,
+        }
+    }, {
+        'url': 'http://www.viddler.com/player/221ebbbd/0/',
+        'md5': '0defa2bd0ea613d14a6e9bd1db6be326',
+        'info_dict': {
+            'id': '221ebbbd',
+            'ext': 'mp4',
+            'title': 'LETeens-Grammar-snack-third-conditional',
+            'description': ' ',
+            'upload_date': '20140929',
+            'uploader': 'BCLETeens',
+            'timestamp': 1411997190,
+            'view_count': int,
+            'comment_count': int,