Virtualdub

I am trying to dub half of a avi file with virtualdub. The total file is 700mb, which would make is file 350mb. But it said that I am out of space and the file size not completed is 27gb. What am I doing wrong? I need it at 350mb. How do I save it?

Thanks

Phil

You need to set the Video to Direct Stream copy or select one of the compression codecs.