I can assure you, you won't need 20GB,....the Super.exe has 24 MB and what they have written there seems to me a mistyping.....
I've got it downloaded and installed,...the whole Super program folder under C:Programs has only 26.6 MB.......so no need to worry.....
And that's what the bottom line of the download page says:
Code:
The download size is 25 MBytes, and comes with all windows compiled versions
of ffmpeg, MEncoder, mplayer, x264, mppenc, ffmpeg2theora and
the libavcodec library (compiled inside ffmpeg and MEncoder). 