[svtplay] Fix video id extraction (closes #28058)

youtube_dl/extractor/svt.py

@@ -255,8 +255,10 @@ class SVTPlayIE(SVTPlayBaseIE):
             svt_id = self._search_regex(
                 (r'<video[^>]+data-video-id=["\']([\da-zA-Z-]+)',
                  r'["\']videoSvtId["\']\s*:\s*["\']([\da-zA-Z-]+)',
+                 r'["\']videoSvtId\\?["\']\s*:\s*\\?["\']([\da-zA-Z-]+)',
                  r'"content"\s*:\s*{.*?"id"\s*:\s*"([\da-zA-Z-]+)"',
-                 r'["\']svtId["\']\s*:\s*["\']([\da-zA-Z-]+)'),
+                 r'["\']svtId["\']\s*:\s*["\']([\da-zA-Z-]+)',
+                 r'["\']svtId\\?["\']\s*:\s*\\?["\']([\da-zA-Z-]+)'),
                 webpage, 'video id')
 
         info_dict = self._extract_by_video_id(svt_id, webpage)