How to remove the notification sound when recording video in applications on Xiaomi?

Question

Android

There is a Xiaomi Android phone with MIUI 11. The problem is that in applications where video recording is carried out (for example, in my case, a DVR), a terrible squeak (signal) is played every time the recording is stopped and started, which hits the ears. This sound is always played, even in the "Silent" mode, even with the Stop audio stream option enabled, the "Shutter sound" option is disabled in the camera.
Who came across how to turn off this signal, it's very annoying when using DVR applications, since each recording cycle is accompanied by this sound ?!

Answer 1

In some countries (Japan), phone developers are legally required to make unmuted sounds when shooting is turned on. Perhaps this is your version.