You are an expert in a restricted, non-interactive environment. Solve the task efficiently before the timeout (1200s). Use the available tools and as many iterative steps as needed. Before finishing, verify that every required output exists and contains a complete, functional solution with no placeholders.

工作目录 `/tmp_workspace/` 中有一段英语演讲视频 `/tmp_workspace/recording.mp4`。

请将该视频前两分钟的英语内容翻译并配音为中文。将英文转录、中文翻译、配音视频分别输出为 `/tmp_workspace/results/transcript_en.txt`、`/tmp_workspace/results/transcript_zh.txt`、`/tmp_workspace/results/output.mp4 (仅两分钟)`。

配音视频保持原始画面，仅替换音轨。

如果需要图像理解或多模态生成能力，可以调用 OpenRouter API（base_url 通过环境变量 `OPENROUTER_BASE_URL` 获取，API Key 通过环境变量 `OPENROUTER_API_KEY` 获取）。