283533 2024-11-21 16:48:49 -0800 [WebM] requestVideoFrameCallback may only works once. 2024-11-22 18:53:22 -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 2076867 0 jean-yves.avenard 2024-11-21 16:48:49 -0800 In the VideoMediaSampleRenderer, when we queue a frame for display, we call and then clear the callback. So in the situation where we would do something like: VMSR.enqueueSample(); VMSR.notifyWhenHasAvailableVideoFrame(...); // 1 VMSR.enqueueSample(); VMSR.notifyWhenHasAvailableVideoFrame(...); // 2 Now we decode and render on the work queue, after the 2nd enqueueSample has been called. We resolve the callback and clear it. So when it comes time to decode the 2nd sample, there's no callback to call anymore, and the client won't set it again. As a consequence, if that callback was to deal with a requestVideoFrameCallback, it won't happen. 2076868 1 webkit-bug-importer 2024-11-21 16:54:13 -0800 <rdar://problem/140384096> 2076917 2 jean-yves.avenard 2024-11-21 21:27:20 -0800 Pull request: https://github.com/WebKit/WebKit/pull/36999 2077211 3 ews-feeder 2024-11-22 18:53:21 -0800 Committed 286994@main (2f99587301dd): <https://commits.webkit.org/286994@main> Reviewed commits have been landed. Closing PR #36999 and removing active labels.