diff --git a/apps/worker/video_processing/thumbnail_generator.py b/apps/worker/video_processing/thumbnail_generator.py
index 04e2d44f7..55cdc28c9 100755
--- a/apps/worker/video_processing/thumbnail_generator.py
+++ b/apps/worker/video_processing/thumbnail_generator.py
@@ -145,7 +145,14 @@ def _overlay_title_on_image(
 
     # 转义 drawtext 特殊字符
     # FFmpeg drawtext 需要转义: ' : % \ [ ]
-    escaped = title_text.replace("\\", "\\\\").replace("'", "’").replace(":", "\\:").replace("%", "%%").replace("[", "\\[").replace("]", "\\]")
+    escaped = (
+        title_text.replace("\\", "\\\\")
+        .replace("'", "’")
+        .replace(":", "\\:")
+        .replace("%", "%%")
+        .replace("[", "\\[")
+        .replace("]", "\\]")
+    )
     # 截断过长标题
     if len(escaped) > 60:
         escaped = escaped[:57] + "..."