Same here.
I have a phone on 16.3 and another on 16.4, accessing the exact same AR experience. 16.3 properly uses the alpha mask in a HEVC .mov file, but the 16.4 doesn't respect the alpha channel. It's an AR project using tensorflow, webGL backend and I've exhausted all other options, and combinations of file types, ruled out any codec or encoding tag issues, etc.
I also have a phone on the dev preview of 16.5 and it's still an issue there too.
dmkrschris
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Melbourne, VIC