Bug 305086

Summary:	REGRESSION(303665@main): [macOS arm64 wk2] imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-without-codecs-parameter.html is flaky failure with Harness Error
Product:	WebKit	Reporter:	Marta Darbinyan <darbinyan>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW
Severity:	Normal	CC:	webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Marta Darbinyan

Reported 2026-01-07 17:08:52 PST

The following test is flaky failure with test timeout error in macOS arm64 wk2 after 303665@main. imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-without-codecs-parameter.html +Harness Error (TIMEOUT), message = null PASS Check if browser supports enough test media types PASS Test audio-only changeType for audio/webm; codecs="vorbis" <-> audio/webm; codecs="vorbis" (using types without codecs parameters) PASS Test audio-only changeType for audio/webm; codecs="vorbis" <-> audio/mp4; codecs="mp4a.40.2" (using types without codecs parameters) PASS Test audio-only changeType for audio/webm; codecs="vorbis" <-> audio/mpeg (using types without codecs parameters) PASS Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/webm; codecs="vorbis" (using types without codecs parameters) -PASS Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/mp4; codecs="mp4a.40.2" (using types without codecs parameters) +TIMEOUT Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/mp4; codecs="mp4a.40.2" (using types without codecs parameters) Test timed out PASS Test audio-only changeType for audio/mp4; codecs="mp4a.40.2" <-> audio/mpeg (using types without codecs parameters) PASS Test audio-only changeType for audio/mpeg <-> audio/webm; codecs="vorbis" (using types without codecs parameters) PASS Test audio-only changeType for audio/mpeg <-> audio/mp4; codecs="mp4a.40.2" (using types without codecs parameters) Test result: https://ews-build.webkit.org/#/builders/161/builds/8252 Test history: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-without-codecs-parameter.html&flavor=wk2&architecture=arm64

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Radar WebKit Bug Importer

Comment 1 2026-01-07 17:09:11 PST

<rdar://problem/167729269>

EWS

Comment 2 2026-01-07 17:33:25 PST

Test gardening commit 305243@main (fb6945e4e061): <https://commits.webkit.org/305243@main> Reviewed commits have been landed. Closing PR #56230 and removing active labels.

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