"></i> 停止连接
                                    </button>
                                </div>
                                <div class="col-md-6 mb-3">
                                    <div class="d-flex">
                                        <button class="btn btn-outline-primary flex-grow-1 me-2" id="btn_start_record">
                                            <i class="bi bi-record-fill"></i> 开始录制
                                        </button>
                             