Netflix(和其他提供商)使用FairPlay Streaming"，这是防止捕获视频内容的原因 - 链接:https://developer.apple.com/streaming/fps/

Netflix (and other providers) use "FairPlay Streaming" which is what prevents capture of the video content - link: https://developer.apple.com/streaming/fps/

请注意，您可以截取 Netflix UI(菜单等)的屏幕截图，而不能截取流媒体内容.

Note that you can do a screen-shot of the Netflix UI (menus and such), just not the streaming content.

如果您稍微搜索一下，就会发现很多讨论都说明您不能在 iOS 中阻止屏幕截图.

If you do a little searching, you will find plenty of discussion explaining that you cannot block screen captures in iOS.