diff --git a/apps/worker/video_processing/unified_render_service.py b/apps/worker/video_processing/unified_render_service.py
index 35c816fe2..c5d4efb16 100755
--- a/apps/worker/video_processing/unified_render_service.py
+++ b/apps/worker/video_processing/unified_render_service.py
@@ -2217,7 +2217,7 @@ class UnifiedRenderService:
             if not bool(cfg.get("gpu_direct_enabled", True)):
                 return False
 
-            video_layers = [_lyr for _lyr in layers if l.role not in ("audio",)]
+            video_layers = [_lyr for _lyr in layers if _lyr.role not in ("audio",)]
             # 只允许一个视频层，且角色为主层
             if len(video_layers) != 1:
                 return False
@@ -2272,12 +2272,12 @@ class UnifiedRenderService:
             from video_processing import gpu_direct_pipeline as gdp
 
             cfg = self.plan.config or {}
-            video_layer = next(_lyr for _lyr in layers if l.role not in ("audio",))
+            video_layer = next(_lyr for _lyr in layers if _lyr.role not in ("audio",))
             video_clips = [c for c in video_layer.clips if c.clip_type != "audio"]
 
             # TTS：把 audio 层的 TTS 片段合并成一个文件给 P4000
             tts_merged: Path | None = None
-            audio_layer = next((_lyr for _lyr in layers if l.role == "audio"), None)
+            audio_layer = next((_lyr for _lyr in layers if _lyr.role == "audio"), None)
             if audio_layer:
                 tts_clips = [c for c in audio_layer.clips if (c.config or {}).get("tts") and c.local_path.exists()]
                 if tts_clips: