302918 2025-11-20 22:08:01 -0800 MediaPlayerPrivateWebM will attempt to re-enqueue more samples indefinitely even when the AudioVideoRenderer isn't ready for it 2025-11-21 03:38:09 -0800 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 jean-yves.avenard jean-yves.avenard webkit-bug-importer oldest_to_newest 2160465 0 jean-yves.avenard 2025-11-20 22:08:01 -0800 The AudioVideoRendererRemote only allows to enqueue up to 20 frames without getting a response from the GPU process. When 20 frames have been enqueued, AudioVideoRendererRemote::isReadyForMoreData() will return false ; when this occurs, the MediaPlayerPrivateWebM will call AudioVideoRendererRemote::requestMediaDataWhenReady() which does query the GPU process. The webm player attempts then to re-enqueue frame but isReadyForMoreData will still continue to return false ; causing an infinite loop and high CPU usage. We should only satisfy the request to requestMediaDataWhenReady when AudioVideoRendererRemote::isReadyForMoreData() is returning true. 2160466 1 webkit-bug-importer 2025-11-20 22:08:11 -0800 <rdar://problem/165187226> 2160486 2 jean-yves.avenard 2025-11-21 00:22:13 -0800 Pull request: https://github.com/WebKit/WebKit/pull/54301 2160523 3 ews-feeder 2025-11-21 03:38:07 -0800 Committed 303386@main (3484e3687b3c): <https://commits.webkit.org/303386@main> Reviewed commits have been landed. Closing PR #54301 and removing active labels.