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

[KaktoR]

Here are some other observations.

Language audio files:

Container Header  17 bytes
File size (CSize) 4 bytes
Unknown           4 bytes
Unknown (some ID) 20 bytes
Unknown           8 bytes 
File name         different bytes lenght according to file name lenght
Language code     3 bytes
Unknown           4 bytes
Riff Wavefmt      16 bytes

Audio files (BKHD container):

Container Header   12 bytes
Unknown            25 bytes
Unknown (DC_DATA)  8 bytes
File size (CSize)  4 bytes 
Unknown            4 bytes
Unknown            13 bytes
Unknown (COM_CONT) 8 bytes
Unknown            8 bytes
Unknown (LOADCONT) 8 bytes
Unknown            4 bytes
Unknown (CSNDBKDT) 8 bytes
Unknown            4 bytes
Unknown            4 bytes
BKHD Header        4 bytes

Video files (not required because you could simply use Mesa to extract or just use xtool bink plugin):

Container Header   12 bytes
Unknown            25 bytes
Unknown (DC_DATA)  8 bytes
Unknown            4 bytes
File size (CSize)  4 bytes
Unknown            4 bytes
Unknown            14 bytes
File size (CSize)  4 bytes (some other file size which differ slightly from first file size)
Unknown            4 bytes
Unknown            18 bytes
File size (CSize)  4 bytes (again some other file size which differ slightly from first file size)
Unknown            14 bytes
Unknown (repeat 1) 4 bytes
Unknown (repeat 2) 4 bytes
Unknown            12 bytes
Unknown (COM_CONT) 8 bytes
Unknown            8 bytes
Unknown (VIDEORES) 8 bytes
Unknown            9 bytes
File name          different bytes lenght according to file name lenght
Language code      3 bytes (only JPN)
Unknown            4 bytes
Bink Header        4 bytes