update

tool/ytdlp.py

@@ -520,6 +520,7 @@ def probe_url(
     timeout_seconds: int = 15,
     *,
     cookiefile: Optional[str] = None,
+    playlist_items: Optional[str] = None,
 ) -> Optional[Dict[str, Any]]:
     """Probe URL metadata without downloading.
 
@@ -529,8 +530,12 @@ def probe_url(
     if not is_url_supported_by_ytdlp(url):
         return None
 
+    playlist_items_key = str(playlist_items or "").strip() or None
+
     # Simple in-memory cache to avoid duplicate probes for the same URL/options in a short window.
-    cache_key = hashlib.md5(f"{url}|{no_playlist}|{cookiefile}".encode()).hexdigest()
+    cache_key = hashlib.md5(
+        f"{url}|{no_playlist}|{cookiefile}|{playlist_items_key or ''}".encode()
+    ).hexdigest()
     now = time.monotonic()
     if cache_key in _PROBE_CACHE:
         ts, result = _PROBE_CACHE[cache_key]
@@ -562,6 +567,8 @@ def probe_url(
 
             if no_playlist:
                 ydl_opts["noplaylist"] = True
+            elif playlist_items_key:
+                ydl_opts["playlist_items"] = playlist_items_key
 
             with yt_dlp.YoutubeDL(ydl_opts) as ydl:  # type: ignore[arg-type]
                 info = ydl.extract_info(url, download=False)