[Webkit-unassigned] [Bug 251137] New: Safari 16 throws error on encrypted video

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=251137

            Bug ID: 251137
           Summary: Safari 16 throws error on encrypted video
           Product: WebKit
           Version: Safari 16
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: vitaly.ivanov at castlabs.com

Created attachment 464644

  --> https://bugs.webkit.org/attachment.cgi?id=464644&action=review

HTML/JS and media to deploy locally

Certain videos encoded with Intel QSV in CBR mode and encrypted with CBCS 1:9 cause Safari 16.2 (both regular and TP) on macOS 13.1 on M1 Air to throw an error after a few seconds of playback.
I've used both my own encryptor and Shaka Packager - the result is the same. At the same time there are no errors on my old Intel-based MBP (mid 2012) / macOS 10.15.7 / Safari 15.6 as well as on iPad Air 2 / iPadOS 15.5, which leads me to believe the faulty link is Safari 16, maybe in combination with Apple silicon.

The demo is deployed here (it's pretty much Apple's own FairPlay sample code with castLabs DRMtoday license acquisition):
http://pop-av.icu:8898/

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