I'm trying to cut an 900mb avi file in 2 separate files of 450mb. I need to do it in command line.

I tried using different commands but it didn't work.
Here is an example:
"D:\Program Files\Avidemux 2.5\avidemux2_cli.exe" --load "E:\movie22.avi" \ --auto-split 900


It's giving me an "contaminated \" error and it's not making any files.
Besides that. I kept getting 2 questions. SOmeting about recreate VBR map and I had to select a yes or no. Can't I put these default questions to yes so I don't have to put it in there everytime?