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On sites like Udemy.com, if you try to take a video of the browser or a screenshot, even if the browser doesn't have focus, the video player shows as a black rectangle instead of showing the content of the video. They are displaying the video using a HTML <video> tag. How is this accomplished?

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David
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  • Mind showing a photo? – James Mar 31 '22 at 17:35
  • I just enrolled to test this and when I screen cap it I get the video. Sounds like a video driver issue – j08691 Mar 31 '22 at 17:35
  • This is a brand new feature of the site that just started today, as far as I can tell. I've always been able to take screenshots before. And no drivers have been changed. Sure I'll get a photo, @James And yes Clive, that may indeed be what's going on here. I just tested Netflix, and it is very similar behavior. Thanks. – David Mar 31 '22 at 17:39
  • @David, I don't think JS have the functionality to detect screenshot like an (eventListener) or screen cpature, but a possible solution I could think about is to check user's keyboard typing since in PC we use shortcut to take screenshot or screen capature – James Mar 31 '22 at 17:53

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