question needs answered about audio and movie

[red lion]

If you have a movie say 3 hours long(example) and you use dvd2one and it takes it down to 2 hours long(again example)
now people are saying the audio remains the same therefore why does the audio(if it remains untouched) not last 1 hour longer than the film
(ie the audio will be running behind the film surley)
i know it does not when i backup but its a question ive often thought about so i thought id ask

the audio must be compressed in some way??????

[Quigonsean]

It dosn't make the movie shorter in length from say 3hr to 2hr, it compresses the file size smaller so the movi is smaller file size in data volume, but same length as veiwable movie. Just 3hr in a smaller space.

Sean