What is the difference between AVFoundation and Input in iOS?

AVFoundation is a framework for working with audiovisual media, providing low-level APIs for playback, recording, editing, and processing audio and video.

Input (often in the context of UIResponder) is the system for handling user input events, such as touches, gestures, keyboard events, and remote control events. It is part of UIKit/AppKit and is not directly related to media content.