I’d like to use ARKit world tracking and display both the back camera feed and the front camera feeds, using the front feed as as a PIP. This would work great for an internet streaming use case.
However, it’s impossible. As soon as ARKit is told to use one mode, the camera for the other side freezes/doesn’t work. This page also says you have to pick one camera to show: https://developer.apple.com/documentation/arkit/arkit_in_ios/choosing_which_camera_feed_to_augment?language=objc
A question to the developers: why is this limitation in-place? Are there any work-arounds for the use case of ARKit world tracking + displaying the back camera feed + displaying the front camera feed as an overlay?
It’s possible to do this with plain camera initialization without ARKit. (There’s an official example.) With ARKit, it no longer works. It’s strange that I cannot access the front feed via one of the other frameworks, but I guess that ARKit blocks that.