Bug 227982 - Vimeo video jerky with getUserMedia
Summary: Vimeo video jerky with getUserMedia
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Web Audio (show other bugs)
Version: Safari 14
Hardware: iPhone / iPad iOS 14
: P2 Major
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2021-07-15 01:20 PDT by Sun
Modified: 2021-07-23 01:47 PDT (History)
5 users (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Sun 2021-07-15 01:20:46 PDT 
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
Comment 1 Radar WebKit Bug Importer 2021-07-22 01:21:15 PDT 
<rdar://problem/80947515>
Comment 2 Smoley 2021-07-22 11:25:24 PDT 
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?
Comment 3 Sun 2021-07-23 01:47:31 PDT 
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