Best Compression Methods for 'Specific' Games. Q&A

[KaktoR]

Originally Posted by mr_gnar

Kingdom Hearts HD 1.5 + 2.5 ReMIX
Main files - Xtool(xzlib)+srep+lzma (lolz takes 3 hours longer and there is barely a difference)
Video files - srep+lzma

Starting size: 45.84 GB
Output size: 34.4 GB

- Days/Recoded videos are ripped, since they're just compiled cutscenes turned into two extra movies.

Has anyone looked at the video files yet for the main games? They seem to be MP4s, but it's not possible to view their metadata/bitrate or even play them. I assume there would be no way to remove this encryption, right? Never heard of videos in a game having such a thing before.

They are mp4 files for sure. Looked a bit with hex

meta�������Oilst���G©too���?data���
����TMPGEnc MPEG Smart Renderer 4 Version 4.0.15.50���"hdlr��������mdirappl�������������Àfree

But seems to crypted or somewhat, for whatever reason.

[Masquerade]

Was there ever an LZMA precompressor? I was reading some ancient threads in my search. At the time, it was said to be a difficult task and to avoid large xdeltas the right params had to be used in recompression. Read a bit on Encode through the wayback machine, but nothing really related to what I was looking for.

Reason I am asking, Crash Bandicoot N Sane Trilogy uses LZMA compression on the archives:



There's an Extract tool for this game which removes the compression from the pak, and saves it as an decompressed pak file, only thing is no way to re-compress said pak.

https://github.com/AdventureT/Nst-Ex...r/SevenZip/sdk

Update: https://github.com/pashok6798/Crash-.../master/CBNSTT

I found another tool with compression abilities, however it is a GUI with no command line unfortunately. Its says it can compress but it doesn't appear to do.