Thanks, Kevin. I am developing a macOS app that manages USB camera/mic/speaker access in real time—switching to a designated USB on connection and restoring the previous device on disconnection—without any user interaction or restarting third-party conferencing apps (e.g., Microsoft Teams). Monitor USB plug/unplug events. Automatically switch to a target device (by VID/PID) when connected. Restore the previously active device when the USB device is removed.

Hope apple pay attention to us developers' feedbacks.

Hello Kevin, According to your suggestion 1, I can disable build-in camera before a third party app opens it, however I can’t disable it after the camera is opened, so the camera can be used on the situation, which can‘t satisfy my requirement. do you have any other suggestion? thanks.

How can I get some samples of using CoreMedia I/O to realize "hide" build-in camera?

Hi eskimo I ran SampleEndpointApp according to your introduction steps, but install failed, any suggestion: Failed to install the extension ❌ Invalid extension configuration in Info.plist and/or entitlements: System extension com.example.apple-samplecode.SampleEndpointAppRKJVFVKFG3.Extension.systemextension does not appear to belong to any extension categories

I want to realize the following feature on macOS when a USB device (Camera/Mic/Speaker) is connected: 1, When a third-party video conferencing app is not in a meeting, ensure the app defaults to using the USB device (Camera/Mic/Speaker). 2, When a third-party conferencing app is in a meeting, ensure the app automatically switches to the USB device (Camera/Mic/Speaker). Does MDM or Automatic Assessment Configuration support the requirement? Is there other available solutions?