[Webkit-unassigned] [Bug 221146] New: [BigSur wk1] imported/w3c/web-platform-tests/media-source/mediasource-invalid-codec.html is consistently failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221146

            Bug ID: 221146
           Summary: [BigSur wk1]
                    imported/w3c/web-platform-tests/media-source/mediasour
                    ce-invalid-codec.html is consistently failing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: amir_mark at apple.com

imported/w3c/web-platform-tests/media-source/mediasource-invalid-codec.html

The test is failing consistently in Big Sur wk1

History: 

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-invalid-codec.html&platform=mac

Text diff:

--- /Volumes/Data/slave/bigsur-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-invalid-codec-expected.txt
+++ /Volumes/Data/slave/bigsur-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-invalid-codec-actual.txt
@@ -1,4 +1,4 @@

 PASS Test an MP4 with an invalid codec results in an error.
-PASS Test a WebM with an invalid codec results in an error.
+FAIL Test a WebM with an invalid codec results in an error. assert_true: Media type not supported in this browser: isTypeSupported('video/webm; codecs="vp8"') expected true got false

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