Overview

File Format
From a file data perspective, it consists of metadata called the Header and frame data called the Replay Data.
The Header Data is divided into a basic metadata section (Header) and a runtime struct section (UserData). The UserData stores both the UStaticStruct and the actual memory values using an FInstancedStruct.
The Replay Data contains information for each Actor, and this information includes Frame Data, Attach/Detach Data, and more.
Quantization & Compression
Supports quantization and compression (for Zlib, LZ4, GZip).