Computer doesn't have xvid, freezes when I try to install?

I'm trying to download a mp4-converter. When I went to download it, the setup installation froze when it tried to extract from xvidcore.dll. I looked in my system 32 folder and apparently I don't have anything with xvid. So I went to the xvid website and tried to download that but the setup installation for that froze when it tried to extract from xvidvfx.dll.

What am I doing wrong?