227982 2021-07-15 01:20:46 -0700 Vimeo video jerky with getUserMedia 2021-07-23 01:47:31 -0700 1 1 1 Unclassified WebKit Web Audio Safari 14 iPhone / iPad iOS 14 NEW InRadar P2 Major --- 1 sunlimet webkit-unassigned cdumez eric.carlson smoley webkit-bug-importer youennf oldest_to_newest 1777153 0 sunlimet 2021-07-15 01:20:46 -0700 Vimeo video is jerky with getUserMedia. - On an iPhone with OS 14.5, go to https://codepen.io/sunlimet/pen/yLbgOEx - Button share, then "Add to Home Screen" - Open PWA, press play = video is lagging - As you can see, there's only the Vimeo iframe and a navigator.mediaDevices.getUserMedia Android do not have this issue, Chrome either. Can reproduce on old IPhones (SE first and second generation, iPhone 6), but it's ok on iPhone 11 In Safari standalone (not PWA), it is better but it's also lagging 1778661 1 webkit-bug-importer 2021-07-22 01:21:15 -0700 <rdar://problem/80947515> 1778772 2 smoley 2021-07-22 11:25:24 -0700 Thanks for filing, I am not able to reproduce this on the latest iOS 15 beta (19A5297e). Have you seen this issue on that build? 1779011 3 sunlimet 2021-07-23 01:47:31 -0700 No, I haven't tried with the iOS 15 beta. I reproduce this issue on the latest 14.7. I made a video so you can see the issue: https://youtu.be/j3KQkExqBNI