f

tool/ytdlp.py

@@ -166,6 +166,10 @@ def list_formats(
 
     if cookiefile:
         ydl_opts["cookiefile"] = str(cookiefile)
+    else:
+        # Best effort attempt to use browser cookies if no file is explicitly passed
+        ydl_opts["cookiesfrombrowser"] = "chrome"
+
     if no_playlist:
         ydl_opts["noplaylist"] = True
     if playlist_items:
@@ -558,6 +562,11 @@ class YtDlpTool:
             cookiefile = self.resolve_cookiefile()
             if cookiefile is not None and cookiefile.is_file():
                 base_options["cookiefile"] = str(cookiefile)
+            else:
+                # Add browser cookies support "just in case" if no file found (best effort)
+                # This uses yt-dlp's support for extracting from common browsers.
+                # Defaulting to 'chrome' as the most common path.
+                base_options["cookiesfrombrowser"] = "chrome"
 
         if opts.no_playlist:
             base_options["noplaylist"] = True