+
+
+class NaverIE(NaverBaseIE):
+    _VALID_URL = r'https?://(?:m\.)?tv(?:cast)?\.naver\.com/(?:v|embed)/(?P<id>\d+)'
+    _GEO_BYPASS = False
+    _TESTS = [{
+        'url': 'http://tv.naver.com/v/81652',
+        'info_dict': {
+            'id': '81652',
+            'ext': 'mp4',
+            'title': '[9월 모의고사 해설강의][수학_김상희] 수학 A형 16~20번',
+            'description': '메가스터디 수학 김상희 선생님이 9월 모의고사 수학A형 16번에서 20번까지 해설강의를 공개합니다.',
+            'timestamp': 1378200754,
+            'upload_date': '20130903',
+            'uploader': '메가스터디, 합격불변의 법칙',
+            'uploader_id': 'megastudy',
+        },
+    }, {
+        'url': 'http://tv.naver.com/v/395837',
+        'md5': '8a38e35354d26a17f73f4e90094febd3',
+        'info_dict': {
+            'id': '395837',
+            'ext': 'mp4',
+            'title': '9년이 지나도 아픈 기억, 전효성의 아버지',
+            'description': 'md5:eb6aca9d457b922e43860a2a2b1984d3',
+            'timestamp': 1432030253,
+            'upload_date': '20150519',
+            'uploader': '4가지쇼 시즌2',
+            'uploader_id': 'wrappinguser29',
+        },
+        'skip': 'Georestricted',
+    }, {
+        'url': 'http://tvcast.naver.com/v/81652',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        content = self._download_json(
+            'https://tv.naver.com/api/json/v/' + video_id,
+            video_id, headers=self.geo_verification_headers())
+        player_info_json = content.get('playerInfoJson') or {}
+        current_clip = player_info_json.get('currentClip') or {}
+
+        vid = current_clip.get('videoId')
+        in_key = current_clip.get('inKey')
+
+        if not vid or not in_key:
+            player_auth = try_get(player_info_json, lambda x: x['playerOption']['auth'])
+            if player_auth == 'notCountry':
+                self.raise_geo_restricted(countries=['KR'])
+            elif player_auth == 'notLogin':
+                self.raise_login_required()
+            raise ExtractorError('couldn\'t extract vid and key')
+        info = self._extract_video_info(video_id, vid, in_key)
+        info.update({
+            'description': clean_html(current_clip.get('description')),
+            'timestamp': int_or_none(current_clip.get('firstExposureTime'), 1000),
+            'duration': parse_duration(current_clip.get('displayPlayTime')),
+            'like_count': int_or_none(current_clip.get('recommendPoint')),
+            'age_limit': 19 if current_clip.get('adult') else None,
+        })
+        return info