[Webkit-unassigned] [Bug 185351] New: Prevent screen recorder from recording protected contents on media elements

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185351

            Bug ID: 185351
           Summary: Prevent screen recorder from recording protected
                    contents on media elements
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: iOS 11
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ultravistor at gmail.com

Professional content providers appear to have major concerns about potential risks with their contents delivered to iOS Safari, as end-users/viewers are able to screen-record the protected contents (mostly videos) on iOS 11. 

The issue has been raised from some customers last year. There seem to be no corresponding issues on the tracker until now, I'd like to submit a bug to have it reviewed by the team. 

Solution ideas:
1. Allow web pages to specify a site-level configuration to prevent screen recorder (or capturer) from capturing site content (maybe by editing spec around Service Workers manifest file?)
2. Scramble or hide media elements with a protected media playback

Other notes:
iOS Safari supports both AES and DRM/Fairplay, but I personally don't know whether both should be considered "protected" or just protecting DRM/EME contents would be fine.

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