Bug 257703

Summary:	MP4 not working
Product:	WebKit	Reporter:	Tom Xu <ycxzhkx>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED MOVED
Severity:	Blocker	CC:	ap, cdumez, eric.carlson, jer.noble, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari 16
Hardware:	iPhone / iPad
OS:	iOS 16
URL:	https://cdn.culturevault.com/e4ee5c70c25ccbf6e3c63054d8a4765b.mp4

Description Tom Xu 2023-06-04 23:28:35 PDT

https://cdn.culturevault.com/e4ee5c70c25ccbf6e3c63054d8a4765b.mp4

Comment 1 Alexey Proskuryakov 2023-06-05 08:46:16 PDT

Thank you for the report! I can reproduce on iOS. Works for me on macOS.

Comment 2 Radar WebKit Bug Importer 2023-06-05 08:46:26 PDT

<rdar://problem/110264337>

Comment 3 Alexey Proskuryakov 2023-06-05 17:10:49 PDT

Turns out that this is not a WebKit issue. This video is encoded in a format that isn't supported (H.264 main profile level 6).

We cannot provide further guidance here, but from a quick web search it appears that the topic of formats supported by iOS devices is well covered on the internet.