<s>
MacTheRipper	B-Operating_System
is	O
a	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
application	O
that	O
enables	O
users	O
to	O
create	O
a	O
playable	O
copy	O
of	O
the	O
contents	O
of	O
a	O
Video	O
DVD	O
by	O
defeating	O
the	O
Content	B-Algorithm
Scramble	I-Algorithm
System	I-Algorithm
.	O
</s>
<s>
The	O
previous	O
lack	O
of	O
an	O
OS	B-Operating_System
X	I-Operating_System
equivalent	O
to	O
the	O
PC	O
software	O
DVDShrink	B-Application
gave	O
this	O
standalone	O
DVD	O
ripper	O
widespread	O
popularity	O
among	O
Macintosh	B-Device
users	O
.	O
</s>
<s>
Previous	O
releases	O
of	O
MacTheRipper	B-Operating_System
violated	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
of	O
the	O
libdvdread	O
and	O
libdvdcss	B-Language
software	O
libraries	O
,	O
on	O
which	O
MacTheRipper	B-Operating_System
is	O
built	O
.	O
</s>
<s>
However	O
,	O
with	O
MacTheRipper	B-Operating_System
4	O
and	O
newer	O
the	O
libdvdread	O
and	O
libdvdcss	B-Language
libraries	O
are	O
distributed	O
separately	O
and	O
must	O
be	O
installed	O
separately	O
for	O
MacTheRipper	B-Operating_System
to	O
work	O
.	O
</s>
<s>
The	O
creation	O
and	O
distribution	O
of	O
MacTheRipper	B-Operating_System
may	O
violate	O
the	O
anti-circumvention	O
laws	O
which	O
the	O
U.S.	O
and	O
EU	O
have	O
adopted	O
as	O
part	O
of	O
the	O
WIPO	O
Copyright	O
Treaty	O
.	O
</s>
<s>
In	O
a	O
case	O
against	O
the	O
maker	O
of	O
a	O
program	O
similar	O
to	O
MacTheRipper	B-Operating_System
,	O
the	O
court	O
found	O
that	O
"	O
the	O
downstream	O
uses	O
of	O
the	O
software	O
[...],	O
whether	O
legal	O
or	O
illegal	O
,	O
are	O
not	O
relevant	O
to	O
determining	O
whether	O
[	O
the	O
manufacturer ]	O
itself	O
is	O
violating	O
the	O
statute.	O
"	O
</s>
