按时间查询录像，为什么没有返回的结果里download_url？

用/records 方法返回的数据里没有“download_url”，返回数据如下：
{
"channel_id": "O000000000003_Profile_1",
"rtsp": "",
"stream_id": "",
"url": "/records/hls/index.m3u8?channel_id=O000000000003_Profile_1\u0026start=1786636800000\u0026end=1786695900000\u0026source=CLOUD",
"hls_url": "/records/devices/O000000000003/channels/Profile_1/1786636800000/1786695900000/index.m3u8",
"routes": null
}