https://blog.wongcw.com/2021/09/22/ios-15-1-%e6%b8%ac%e8%a9%a6%e7%89%88%e6%96%b0%e5%8a%9f%e8%83%bd%e5%8c%af%e7%b8%bd%ef%bc%9a%e5%90%8c%e6%92%ad%e5%85%b1%e7%94%a8%ef%bc%88shareplay%ef%bc%89%e5%9b%9e%e6%ad%b8/