Can i run video saving to album process in OnApplicationPause on iOS

I’m using NatCorder and NativePlugin to record and save Video taken by iPhone Camera.

But now i have a problem that i want to run the video saving process while i switch application (the same as native camera), so i put video saving process into the OnApplicationPause. On Android i achieved that but on iOS i failed.

I wonder whether i can achieve that on unity iOS. If I can ,which asset can I use to achieve that?

Unity 2021.3.31f1