This OSBES shader is different from the shaderpacks you've encountered before, this Open Source Bedrock Edition Shader has a feature that makes your mcpe view look like cinematic. Features of osbes shaders themselves such as advanced lighting, reflections on water and metals, weather effects, better clouds, parallax mapping and others. You will never know the difference before you try this osbes shaders for minecraft.
It's the same when you try to add a shader for minecraft texture, then you will know every difference from the shader itself. You can activate this OSBES addon in minecraft v1.19 or any other version of the one you have. This shader will not change the course of your gameplay, because this is only to add a different effect from the original view in mcpe.
DISCLAIMER: This is an unofficial application for Minecraft Pocket Edition. The Minecraft Name, the Minecraft Brand and the Minecraft Assets are property of Mojang AB or their respectful owner. This application is not affiliated in any way with Mojang AB. All rights reserved. In accordance with http://account.mojang.com/documents/brand_guidelines