How to encrypt the video of VIVO mobile phone?

The encryption methods of the software set by different systems of vivo mobile phones are different. Please refer to the following:

Funtouch OS 3.0 sets software encryption for the following systems: enter I Manager-Software Management-Software Lock-Unlock-click the blue lock icon behind the software to encrypt the software. After the setting is completed, you need to enter the privacy password when using the locking software.

Funtouch OS 3.0 and above set up software encryption: Go to Settings-Fingerprint and Password-(enter the screen lock password)-Privacy and application encryption-enter the privacy password, and then you can choose software encryption. After setting, you need to enter a privacy password when using encryption software.