After reading the information in Razor12911 posts better.
I realized that it would also be necessary to set the parameter -m [1/2], so that through the .bat file it is possible to send the type.
It may not be possible to implement this, but it would be good.
But the normal mode could not be removed because for extraction it would be necessary to use the current mode using SetIniString for the decompression to be done using IsDone.
Maybe something that lets you use it like this:
Code:
ue4dt.exe e -m -key <stdin> <stdout>
arc.exe a -ep1 -r -ed -s; -w.\temp -mue4dt:2:0x5DD20432F2AD810071033FC3F925FFDFD647514524D0A0D222E17D76BAF57BFD+lzma:ultra data.arc "pack\*"