diff --git a/apps/api/app/api/routes/generation_preview.py b/apps/api/app/api/routes/generation_preview.py
index bd843f31c..5e9414a70 100755
--- a/apps/api/app/api/routes/generation_preview.py
+++ b/apps/api/app/api/routes/generation_preview.py
@@ -238,9 +238,9 @@ def get_preview_generation_task(
     if task is None:
         raise HTTPException(status_code=404, detail=f"预览任务 {task_id} 不存在")
 
-    # 权限校验：任务必须属于当前用户
-    task_user_id = getattr(task, "created_by_user_id", "") or ""
-    if not task_user_id or task_user_id != authenticated_user.user.id:
+    # 权限校验：任务必须属于当前用户（统一转 str 比较，避免 UUID/str 类型差异）
+    task_user_id = str(getattr(task, "created_by_user_id", "") or "")
+    if not task_user_id or task_user_id != str(authenticated_user.user.id):
         raise HTTPException(status_code=403, detail="无权访问该任务")
 
     # 校验是否为预览任务
diff --git a/apps/worker/worker_app/tasks/generation.py b/apps/worker/worker_app/tasks/generation.py
index e2eb61897..de1f94075 100755
--- a/apps/worker/worker_app/tasks/generation.py
+++ b/apps/worker/worker_app/tasks/generation.py
@@ -1074,6 +1074,7 @@ def _render_video(
         export_cfg["resolution"] = resolution
     elif not export_cfg.get("resolution"):
         export_cfg["resolution"] = f"{OUTPUT_WIDTH}x{OUTPUT_HEIGHT}"
+    # 将修改后的配置写回 virtual_plan（拷贝后的副本，不影响原始数据源）
     plan_cfg["export"] = export_cfg
     virtual_plan.config = plan_cfg