record video at twice + speed ?

[harrytb]

hi guys.
here's a question for you.

i recently recorded some video for work.
we made a 2200mm dia football out of 20 hexagonal and 12 pentagonal panels in polycarbonate.
the whole thing took about 3 hours to assemble but,
i want to edit it and also speed it up so that anyone watching it,won't have to sit through 2-3 hours worth of video.

so,my question......
what software can i use to re-record the video at a faster speed?

TIA,
harry.

*Edit*
P.S,
i'm not bothered about the audio,as i will be adding some form of music to it.