diff --git a/controller/task_video.go b/controller/task_video.go
index 86095307d..d7c19e620 100644
--- a/controller/task_video.go
+++ b/controller/task_video.go
@@ -74,7 +74,13 @@ func updateVideoSingleTask(ctx context.Context, adaptor channel.TaskAdaptor, cha
 		logger.LogError(ctx, fmt.Sprintf("Task %s not found in taskM", taskId))
 		return fmt.Errorf("task %s not found", taskId)
 	}
-	resp, err := adaptor.FetchTask(baseURL, channel.Key, map[string]any{
+	key := channel.Key
+
+	privateData := task.PrivateData
+	if privateData.Key != "" {
+		key = privateData.Key
+	}
+	resp, err := adaptor.FetchTask(baseURL, key, map[string]any{
 		"task_id": taskId,
 		"action":  task.Action,
 	}, proxy)