254076 2023-03-17 08:10:13 -0700 MediaSource duration change algorithm incorrectly update the duration 2023-03-18 16:53:13 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 225367 1 jean-yves.avenard jean-yves.avenard webkit-bug-importer oldest_to_newest 1942092 0 jean-yves.avenard 2023-03-17 08:10:13 -0700 Per the duration change algorithm [1] ``` 4. If new duration is less than highest end time, then Note :This condition can occur because the coded frame removal algorithm preserves coded frames that start before the start of the removal range. 1. Update new duration to equal highest end time. Update duration to new duration. ``` However https://searchfox.org/wubkat/rev/0df98689c59d069de39d9ddb7e7fe403bf15070e/Source/WebCore/Modules/mediasource/MediaSource.cpp#520-525 we set the duration to the value originally passed. This causes the test `LayoutTests/media/media-source/media-source-play.html` when run in the GPU test, this wasn't an issue when the MockMSE runs in the content process as it always reads the duration from the parent MSE instead which is correct. [1] https://w3c.github.io/media-source/#dfn-duration-change 1942093 1 webkit-bug-importer 2023-03-17 08:10:39 -0700 <rdar://problem/106858912> 1942101 2 jean-yves.avenard 2023-03-17 08:31:44 -0700 Pull request: https://github.com/WebKit/WebKit/pull/11654 1942342 3 ews-feeder 2023-03-18 16:53:11 -0700 Committed 261830@main (8575978fe5ef): <https://commits.webkit.org/261830@main> Reviewed commits have been landed. Closing PR #11654 and removing active labels.