How to create a FRHITexture2D using nv12 byte data?

The following steps create problems.

//read nv12 byte data

//create FRHITexture2D Texture Resource Obj
004C94D4-0B6D-4c71-99D5-6384EAAFDF8C

//copy nv12bytedata To FRHITexture2D