I have multiple file to process from 1/2mb to 40mb... :/
$F_output = @ScriptDir&"test_output.txt"
$F_input = @ScriptDir&"test.txt"
FileOpen($F_output,17)
FileOpen($F_input,17)
Filewrite($F_output,'header')
FileSetPos($F_input,128,0);lenght of header
$nb_ligne = Hex_to_int32(FileRead($F_input,4))
For $i to $nb_ligne
$1st_part = FileRead($F_input,xxx bit)
FileSetPos($F_input,4,1);bits to skip
$2nd_part = FileRead($F_input,xxx bit)
FileWrite($F_output,$1st_part&$2nd_part)
Next
MsgBox(0,"","Finnish")