> dd if=/dev/dvd of=image.dvd
This is it's a standard store-bought DVD, this will end up copying the
encrypted (CSS) data to your HD, which will add CPU overhead at play time.
dvdbackup (in portage) does roughly the same thing, but decrypts once, at
rip time. It does no transcoding so everything is at full DVD quality
(and size). It preserves all menus in mirror (-M) mode, but can also be
used to rip individual titles.
I have a couple problems with dvdbackup.
It doesn't seem to have an option for mirroring the entire DVD
structure into a single file like dd does, although I suppose a
subsequent command could be used to create an ISO.
The other thing is, it doesn't seem to do so well with my "The Life of
Mammals" DVD. dd rips it just fine, but VLC is the only program that
will play it. When mirrored with dvdbackup, a couple of "Error
cracking CSS key" messages are displayed in the terminal, and although
the process does finish, even VLC won't play the image.
- Grant
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