[dplayit] Fix extraction (closes #13851)

youtube_dl/extractor/dplay.py

@@ -7,16 +7,18 @@
 
 from .common import InfoExtractor
 from ..compat import (
-    compat_urlparse,
     compat_HTTPError,
+    compat_str,
+    compat_urlparse,
 )
 from ..utils import (
-    USER_AGENTS,
     ExtractorError,
     int_or_none,
-    unified_strdate,
     remove_end,
+    try_get,
+    unified_strdate,
     update_url_query,
+    USER_AGENTS,
 )
 
 
@@ -183,11 +185,27 @@ def _real_extract(self, url):
 
         webpage = self._download_webpage(url, display_id)
 
+        title = remove_end(self._og_search_title(webpage), ' | Dplay')
+
+        video_id = None
+
+        info = self._search_regex(
+            r'playback_json\s*:\s*JSON\.parse\s*\(\s*("(?:\\.|[^"\\])+?")',
+            webpage, 'playback JSON', default=None)
+        if info:
+            for _ in range(2):
+                info = self._parse_json(info, display_id, fatal=False)
+                if not info:
+                    break
+            else:
+                video_id = try_get(info, lambda x: x['data']['id'])
+
+        if not info:
             info_url = self._search_regex(
                 r'url\s*[:=]\s*["\']((?:https?:)?//[^/]+/playback/videoPlaybackInfo/\d+)',
-            webpage, 'video id')
+                webpage, 'info url')
 
-        title = remove_end(self._og_search_title(webpage), ' | Dplay')
+            video_id = info_url.rpartition('/')[-1]
 
             try:
                 info = self._download_json(
@@ -230,7 +248,7 @@ def _real_extract(self, url):
             season_number = episode_number = upload_date = None
 
         return {
-            'id': info_url.rpartition('/')[-1],
+            'id': compat_str(video_id or display_id),
             'display_id': display_id,
             'title': title,
             'description': self._og_search_description(webpage),