Also, Chrome does support AAC which was popularised by Apple pushing it onto iPhones.
> Safari on iOS supports low-complexity AAC audio, MP3 audio, AIF audio, WAVE audio, and baseline profile MPEG-4 video. Safari on the desktop (Mac OS X and Windows) supports all media supported by the installed version of QuickTime, including any installed third-party codecs. [0]
Despite that probably being written many, many years ago, it's pretty accurate from what I can tell.
[0] https://developer.apple.com/library/archive/documentation/Au...
And eventually AVIF: https://twitter.com/mathias/status/1248135249663574017 & https://bugs.webkit.org/show_bug.cgi?id=207750
As a somewhat interesting aside, Apple don't even support their own HEIC in Safari, so maybe they just don't have a team working on this area of Safari!
Aside of the potential risk of a lawsuit, what makes this worse is that as a partner of the MPEG-LA, they might even be in the position of compromising the MPEG patent pool itself.
Although I'm not trying to defend Safari but webp is not a widely used format and absolutely shouldn't be being pushed at this point until I can save an image from a site and actually be able to use it in applications.