公众号后台上传的视频素材通过获取素材接口返回的 down_url 是一个网页链接

(
    [title] => iOS小程序-评论弹窗
    [description] => 
    [down_url] => http://mp.weixin.qq.com/mp/mp/video?__biz=MzA3Mzk4MzEyMQ==&mid=100000315&sn=ec24f06c5feff135b9634be4c5180396&vid=wxv_1791660118158147592&idx=1&vidsn=26dca4d2a1048e02db640f323a1898bc&fromid=1#rd
    [newcat] => 其他
    [newsubcat] => 其他
    [tags] => Array
        (
        )

    [cover_url] => http://mmbiz.qpic.cn/mmbiz_jpg/nicfm4vvJSTtIBiaoJNR2sDXd9lHLRqeBMpyaK6gPHJmeT1icRmicfZ6cEvQVbTpJzfgEP0RHLQcBCn51DZosib3gag/0?wx_fmt=jpeg
    [vid] => wxv_1791660118158147592
)

通过接口上传的视频素材，再通过获取素材接口返回的 down_url 是一个文件链接

(
    [title] => tmp_67d9204d49795bb389c4f87b025308e76f2abb215b2c918c.mp4
    [description] => 
    [down_url] => http://203.205.137.209/vweixinp.tc.qq.com/1007_c21109770f264059a1eb133e14ff20e9.f10.mp4?vkey=DAC3FC7DBDDC4CABB7B26B61CBBFD1D0548819E07D61C205AA6732C1C035E878E4D05D3E59B5FEBF08FF19085B0255D3CDDAAF785B2773C1439A5ABD7ACA545030D6635BF0A843F173B6B05DD0BFA0D828CF8D8741F1C237&sha=0&save=1
    [tags] => Array
        (
        )

)

接口现在不能获取公众号后台上传的视频源了吗？