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

[Masquerade]

^^
Almost spot on, I would like to make some additions.

The 3GB pak file contains raw WWise audio. This can be packed with msc(tak)+razor.

Most of the game data is stored uncompressed, there is only an incredibly tiny amount of mermaid streams so using any precompressor will have little impact on the end result. These handful of mermaid streams and the start of UCAS archives are becoming more common in Unreal Engine 5 games.

The director's commentary video is KB2i so it can be packed / unpacked with cls-bpk.dll. Little point in using XTool for this task since bpk unpacks the video without data errors and there is no opportunity for multithreading.

The remaining videos are KB2n which is unsupported by bpk (the XTool configuration sutomatically filters these videos). I used the latest BCM (v2.03 at time of writing) by Ilya Muravyov after srep to squeeze a slight bit extra compression.

My size was 12.4GB for:

Primary: srep+lolz
Secondary: msc+razor
Tertiary: srep+bcm
Quaternary: bpk

And the Director's Commentary can be separated to give 10.5GB minimum size.