"Gordon" <> wrote in message
news

...
> On Sun, 06 Mar 2005 15:22:23 +1300, wrote:
>
> > Surely if it is a "perfect 1:1 copy" then there should be no compression
> > of the data on the DVD other than what was done to encode the DVD in the
> > first place.
>
> So there *is* compression yes? 
>
Depends on the size of the source.
CloneDVD scans the original and if it fits on the blank media without
recompression, it will record it as is.
If it doesn't fit it re-compresses to make it fit.
Most of the time the recompression is un-noticeable, unless you are trying
to squeeze a lot of content onto the blank; eg. multiple soundtracks, lots
of extras etc.