The VLC codecs for the built-in media player of MiXplorer file manager. MiXplorer has to be installed first.

Download MiX from XDA store:
labs.xda-developers.com/store/app/com.mixplorer
From version MiX Codecs 1.1:
Updated Target SDK to 28.
Variant
Arch
Version
DPI
(arm-v7a)
Latest: 1.1 on January 28, 2019
(arm64-v8a)
Latest: 1.1 on December 23, 2018
(x86)
Latest: 1.1 on January 28, 2019
All versions
January 28, 2019