Computer Repair

I am useing Format Factory program to convert a VOB file to AVi

And in the settings I pick Output Format AVi

Now wen it is compleate I bring the file into the program Media Info to check the specs.

And it says CODEC MPEG 4

why does it not say AVi?????????

And if I just right click on the file and pick properties and click Advanced Tab it says compresson XViD

So there you have it I checked it two diferant ways and they say two diferant things?????????????????????????????????