Created attachment 443408 [details] AVC High 10 I tried on an iPhone XS Max and iPhone 13 Pro with iOS 14 and iOS 15 to play this video in Safari and it does not work.
Created attachment 443409 [details] Safari on iOS - Playback does not work
Created attachment 443411 [details] Notes on iOS - Playback works
<rdar://problem/86287553>