251403 – WebP video slows to a crawl on the first loop

Bug 251403 - WebP video slows to a crawl on the first loop

Summary: WebP video slows to a crawl on the first loop

Status:	RESOLVED INVALID

Alias:	None

Product:	WebKit
Classification:	Unclassified
Component:	Media (show other bugs)
Version:	Other
Hardware:	Unspecified Unspecified

Importance:	P2 Normal
Assignee:	Nobody

URL:
Keywords:	InRadar

Depends on:
Blocks:

Reported:	2023-01-30 16:43 PST by Brandon
Modified:	2023-01-31 13:03 PST (History)
CC List:	4 users (show)

See Also:	248755

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Description Brandon 2023-01-30 16:43:22 PST

https://just-eat-prod-eu-res.cloudinary.com/video/upload/w_900,q_auto,e_loop,fl_animated,f_webp,fl_awebp/Experiments/Rosie%20gif%20test/JUST_EAT_PAD_THAI_1.webp

Comment 1 Radar WebKit Bug Importer 2023-01-30 16:46:58 PST

<rdar://problem/104843448>

Comment 2 Eric Portis 2023-01-30 16:52:56 PST

Looks like this has been noticed by someone else, too (example URL no longer resolves, though): https://discussions.apple.com/thread/252594380

Comment 3 Said Abou-Hallawa 2023-01-31 11:56:44 PST

The slow animation happens in the first ‘loop’ only. Once the animation starts over, playback occurs at normal speed.

Comment 4 Said Abou-Hallawa 2023-01-31 11:57:39 PST

rdar://100568410

Comment 5 Alexey Proskuryakov 2023-01-31 13:03:27 PST

Updating the title, as I observe identical behavior in STP and in shipping Safari.

Also, marking as INVALID, because we currently believe this issue to be below WebKit is system frameworks.