I have a little problem with Format Factory. When I change MKV to AVI the size changes also and passes from 165 MB to 230 MB but the last file I convert didn't change its size (the AVI was 165 MB like the MKV). I was wondering why, because if I can do the same thing with all the files it'll be wonderful. (I checked the properties of the files, nothing is different from the others, or I didn't see the difference). Do someone have an idea?