diff --git a/apps/worker/video_processing/render_adapter.py b/apps/worker/video_processing/render_adapter.py
old mode 100644
new mode 100755
index 04a90dabe..f0fd6192e
--- a/apps/worker/video_processing/render_adapter.py
+++ b/apps/worker/video_processing/render_adapter.py
@@ -504,11 +504,13 @@ class RenderAdapter:
 
         self._report_progress(progress_cb, 40.0, "执行视频渲染")
 
-        # 2. 初始化 ASR（预览模式跳过，节省启动开销）
-        asr_service = None if is_preview else self._get_asr_service()
+        # 2. 初始化 ASR
+        # 预览模式下，如果 plan.config 中存在 voice_id，仍需初始化 ASR 以支持配音
+        plan_config = plan.config or {}
+        has_voice_id = bool(plan_config.get("voice_id"))
+        asr_service = None if (is_preview and not has_voice_id) else self._get_asr_service()
 
         # 3. 读取输出分辨率
-        plan_config = plan.config or {}
         export_config = plan_config.get("export", {}) or {}
         output_width, output_height = _parse_resolution(export_config.get("resolution"))
         logger.info(