268987 2024-02-08 07:37:16 -0800 [Cocoa] WebCodecs H264 decoder is not always reordering frames according presentation time 2024-03-07 11:23:24 -0800 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 youennf youennf marcello webkit-bug-importer oldest_to_newest 2011740 0 youennf 2024-02-08 07:37:16 -0800 Follow up to https://bugs.webkit.org/show_bug.cgi?id=263901, it seems that not all video streams get reordered properly. 2011742 1 webkit-bug-importer 2024-02-08 07:38:07 -0800 <rdar://problem/122544744> 2011743 2 youennf 2024-02-08 07:38:22 -0800 Full repro steps from Marcello: - pull the code: - either from https://github.com/marcello3d/webcodecs/tree/marcello/frame-out-of-order-logging - apply the patch yourself to https://github.com/w3c/webcodecs https://patch-diff.githubusercontent.com/raw/w3c/webcodecs/pull/734.patch - run the server with `node server` in the samples folder - open http://localhost:8888/ in safari - open developer console to see javascript logs - leave settings at 2D & h264 - click start 2011755 3 youennf 2024-02-08 08:17:12 -0800 Our parsing of SPS is not liking samples/data/bbb_video_avc_frag.mp4 2011759 4 marcello 2024-02-08 08:27:12 -0800 I can find more test files, if that’s helpful. This is basically the last technical blocker to getting descript.com working on Safari/ipad/iphone. 2011766 5 youennf 2024-02-08 08:37:24 -0800 Pull request: https://github.com/WebKit/WebKit/pull/24076 2012124 6 ews-feeder 2024-02-09 01:25:22 -0800 Committed 274353@main (875db7cbec49): <https://commits.webkit.org/274353@main> Reviewed commits have been landed. Closing PR #24076 and removing active labels. 2019274 7 marcello 2024-03-06 22:19:00 -0800 okay I just tested this on Safari Technology Preview 190 (Safari 17.4, WebKit 19619.1.5.5.2) it's fixed on the h264 example, hurray! But the h265 example still fails :( Error: Decoded frame 166666 µs out of order, last frame was 200000 µs 2019391 8 marcello 2024-03-07 11:23:24 -0800 filed the new bug as https://bugs.webkit.org/show_bug.cgi?id=270645