-        playinfo = self._download_json(
-            'http://global.apis.naver.com/rmcnmv/rmcnmv/vod_play_videoInfo.json?%s'
-            % compat_urllib_parse_urlencode({
-                'videoId': long_video_id,
-                'key': key,
-                'ptc': 'http',
-                'doct': 'json',  # document type (xml or json)
-                'cpt': 'vtt',  # captions type (vtt or ttml)
-            }), video_id)
-
-        formats = [{
-            'url': vid['source'],
-            'format_id': vid.get('encodingOption', {}).get('name'),
-            'abr': float_or_none(vid.get('bitrate', {}).get('audio')),
-            'vbr': float_or_none(vid.get('bitrate', {}).get('video')),
-            'width': int_or_none(vid.get('encodingOption', {}).get('width')),
-            'height': int_or_none(vid.get('encodingOption', {}).get('height')),
-            'filesize': int_or_none(vid.get('size')),
-        } for vid in playinfo.get('videos', {}).get('list', []) if vid.get('source')]
-        self._sort_formats(formats)
-
-        view_count = int_or_none(playinfo.get('meta', {}).get('count'))
-
-        subtitles = {}
-        for caption in playinfo.get('captions', {}).get('list', []):
-            lang = dict_get(caption, ('locale', 'language', 'country', 'label'))
-            if lang and caption.get('source'):
-                subtitles[lang] = [{
-                    'ext': 'vtt',
-                    'url': caption['source']}]
-
-        info = self._get_common_fields(webpage)
-        info.update({
-            'id': video_id,
-            'formats': formats,
-            'view_count': view_count,
-            'subtitles': subtitles,
-        })
-        return info
+        if '' in (long_video_id, key):
+            init_page = self._download_init_page(video_id)
+            video_info = self._parse_json(self._search_regex(
+                (r'(?s)oVideoStatus\s*=\s*({.+?})\s*</script',
+                 r'(?s)oVideoStatus\s*=\s*({.+})'), init_page, 'video info'),
+                video_id)
+            if video_info.get('status') == 'NEED_CHANNEL_PLUS':
+                self.raise_login_required(
+                    'This video is only available for CH+ subscribers')
+            long_video_id, key = video_info['vid'], video_info['inkey']
+
+        return merge_dicts(
+            self._get_common_fields(webpage),
+            self._extract_video_info(video_id, long_video_id, key))
+
+    def _download_init_page(self, video_id):
+        return self._download_webpage(
+            'https://www.vlive.tv/video/init/view',
+            video_id, note='Downloading live webpage',
+            data=urlencode_postdata({'videoSeq': video_id}),
+            headers={
+                'Referer': 'https://www.vlive.tv/video/%s' % video_id,
+                'Content-Type': 'application/x-www-form-urlencoded'
+            })