diff --git a/apps/worker/video_processing/render_audio.py b/apps/worker/video_processing/render_audio.py
index e01a22f51..e53eefec3 100755
--- a/apps/worker/video_processing/render_audio.py
+++ b/apps/worker/video_processing/render_audio.py
@@ -288,19 +288,21 @@ def concat_main_audio(
             ]
             if trim_start > 0:
                 command.extend(["-ss", f"{trim_start:.3f}"])
-            command.extend([
-                "-i",
-                str(clip.local_path),
-                "-vn",
-                "-acodec",
-                "aac",
-                "-b:a",
-                "128k",
-                "-ar",
-                "48000",
-                "-ac",
-                "2",
-            ])
+            command.extend(
+                [
+                    "-i",
+                    str(clip.local_path),
+                    "-vn",
+                    "-acodec",
+                    "aac",
+                    "-b:a",
+                    "128k",
+                    "-ar",
+                    "48000",
+                    "-ac",
+                    "2",
+                ]
+            )
             # 单 clip 简单模式：将所有音频滤镜合并为单个 -af 参数（避免多个 -af 冲突）
             af_parts: list[str] = []
             vol = _clip_volume(clip)