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gitMenv / UEcastoc

This repository is a work-in-progress to create a simple unpack and packing tool of .ucas and .utoc files. If this succeeds, it would make it possible to create mods for games that use the new .ucas and .utoc file format.

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UR5.x only as a base?

Kein opened this issue · comments

commented

I have UE 4.27.2 project that uses IOStore. Here is an example of a pak, packaged via Editor:
mods.zip

UEcastoc can list and unpack files, however, packing does not produce closely-equivalent content (I understand the basics of how IO store works and I'm aware binary equivalence in not possible for a generic method). The UTOC table is vastly different. Is its structure based on UE5.x changes that were made to IOStore? I know there were a handful compared to 4.27.*

P.S. UCAS file seems to be also compressed by default so I could not make a valid 1:1 comparison.