感谢 https://blog.csdn.net/xinshou_caizhu/article/details/94028606
我们在查看其它资料的时候，视频总加载失败，后来发现是少了 https:
<iframe src="
https://player.bilibili.com/player.html?aid=329574237&bvid=BV1zA411E7NG&cid=235334138&page=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>