handle nested dirs

psthumbgen.py

@@ -85,6 +85,17 @@ def _print_ffmpeg(msg):
     print(f"{_ANSI_GREEN}{msg}{_ANSI_RST}")
 
 
+def _ffmpeg_first_for_gameplay_path(path):
+    """Under ...\\gameplay\\, Shell GetThumbnail often fails and Icaros cache misses; go straight to FFmpeg."""
+    if not _ffmpeg_enabled():
+        return False
+    try:
+        p = os.path.normpath(path).replace("/", "\\").lower()
+    except Exception:
+        return False
+    return "\\gameplay\\" in p
+
+
 def find_files(dir):
     # Only process formats that Synology doesn't handle well
     # Exclude common images (jpg, png, gif, etc.) since NAS handles them fine
@@ -145,6 +156,10 @@ def ensure_directory_exists(path):
 
 def create_video_thumbnails(source_path, dest_dir):
     """Generate video thumbnails: Windows Shell (Icaros-backed) first, FFmpeg fallback."""
+    if _ffmpeg_first_for_gameplay_path(source_path):
+        _print_ffmpeg(f"Using FFmpeg directly (gameplay subtree): {source_path}")
+        create_video_thumbnails_ffmpeg(source_path, dest_dir)
+        return
     # Try Windows thumbnail extraction first (leverages Icaros provider when present)
     windows_thumb = extract_windows_thumbnail(source_path)
     if windows_thumb: