thanks for feedback
dear friend all files and how they get compressed are chosen by the file named arc.groups
the name of the filter starts with $text for example
and then all *.txt *.ini and all files that are text alike will be compressed by what you put in front of /$text=rep:500+zstd for example this will take all texts and compress them separetaly then put them back in the entire arc or bin or cab whatever
now there is a filter that takes all files that are unknown to the mask and compresses them generally by the usage of the
-mmsc+srep64+...+lz77 for example
if you open your arc.group you will find that wmv files are under void = uncompressible data
if you want add *.bnk files under void too
and replace this line in general comp /$void=msc+srep64+zstd thus ensuring that precomp will never see bnk files
bnk is uncompressible data format is has nothing to do with precomp.exe
i hope that you got me
sorry for long text