The good news is that since this problem shows up only with third-party apps, the odds favor that the issue is software related and has nothing to do with hardware which would make it probably more serious, requiring affected users to ship back their devices. Instead, the affected third-party apps will have to disseminate updates to correct the problem. If this turns out to be the case, the problem could be the fault of the app developers who did not make the necessary adjustments to the iPhone 14 Pro cameras.
Some iPhone 14 Pro users are saying that the problem is related to Optical Image Stabilization (OIS). This is a feature that tries to keep a video from blurring due to the motion being made by a user as he/she records it. This is accomplished by moving a module inside the iPhone to make up for the shakiness of the iPhone user holding the phone. And the movement of this module probably explains the metallic sound heard in the background of the video that accompanies this story.