NEW278964
Video.currentTime jumps backwards with certain videos 
https://bugs.webkit.org/show_bug.cgi?id=278964
Summary Video.currentTime jumps backwards with certain videos
Michael Diehr
Reported 2024-08-31 07:57:43 PDT
Expected behavior: video.currenTime should not go backwards when playing a movie Actual behavior: with certain videos, currentTime will jump backwards - this usually happens with autoplay set and only at the start of the video. Regression testing: This bug can be reproduced in Safari 17 and Safari Technical Preview 202, on macOS 14 and macOS 15, on both Intel and M1 CPUs. To Reproduce: Open this web page and click the play button: https://xochi.com/webkit/currenttime/ The Log will show this when the bug is evident: canplay last=-1 current=0.18661636053366237 last=0.18661636053366237 current=0.0003444169997237623 TIME WENT BACKWARDS last=0.0003444169997237623 current=0.3970671469993595 last=0.3970671469993595 current=0.6480351129976021 last=0.6480351129976021 current=0.8979972370002867 ... etc ...
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Alexey Proskuryakov
Comment 1 2024-09-04 12:49:30 PDT
I was able to reproduce this using a build of macOS Sequoia that I have on my machine. It took several reloads before the issue happened.
Radar WebKit Bug Importer
Comment 2 2024-09-07 07:58:40 PDT
<rdar://problem/135473786>
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